Maintain a minimum distance between the blowdown valve and restriction orifice

<div dir="ltr" style="text-align: left;" trbidi="on"> Following is a typical arrangement of blowdown pipe arrangement consisting blowdown valve (BDV), restriction orifice (RO), and downstream piping. It is recommended to maintain a minimum length of spool pipe b/w the BDV and RO.<span style="background-color: white; color: #444444; font-family: Ubuntu, Helvetica, Arial, sans-serif; font-size: 14px; line-height: 24px;"><br /></span> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc904JkS8Wzy1lO3kylGN-DEzJNrpg2ziTz7Ww_42_MehNSnwXS6VjIpMmZSAqM6OA21LuXsB4UknC5kC5MaRl5VY8i2d0jhS8UyzQyEtHqupL7_LnyevdGLvctQvOB8ad1Nr7vEvzt-0i/s1600/BDV+RO+600mm.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="220" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc904JkS8Wzy1lO3kylGN-DEzJNrpg2ziTz7Ww_42_MehNSnwXS6VjIpMmZSAqM6OA21LuXsB4UknC5kC5MaRl5VY8i2d0jhS8UyzQyEtHqupL7_LnyevdGLvctQvOB8ad1Nr7vEvzt-0i/s1600/BDV+RO+600mm.png" width="320" /></a></div> <div class="separator" style="clear: both; text-align: center;"> <br /></div> This arrangement typically used to depressurized a system inventory to a safe level within a limited time to minimized catastrophic scenario. Between the Blowdown valve and Restriction orifice, there 600 mm spool piece between them. What the main purpose of this 600mm spool piece ?<div> <br /></div> <div> Reason: There will be Joule Thompson (JT) effect at orifice due to hydrocarbon fluid expansion typically but to a high pressure let down. Generally the JT effect will produce a sub zero temperature (below 0 C) at RO and during the blowdown process low temperature will propagate to the BDV causing moisture from atmosphere will freeze on outside of the Blowdown valve.(Latent heat in the piping will transfer to cold fluid and slowly approaching this subzero temperature. The "coldness" will travel back to upstream of Restriction orifice and probably reaches Blowdown valve. It potentially cause the upstream Blowdown valve body temperature drops below subzero as well.) Operator will not be able to close the BDV after the blowdown and it could also cause backflow creating potential hazardous situation.  Those "general good engineering practice is to locate Restriction orifice, 600mm downstream of Blowdown valve.</div> <div> <span style="background-color: white; color: #444444; font-family: Ubuntu, Helvetica, Arial, sans-serif; font-size: 14px; line-height: 24px;"><br /></span> <span style="background-color: white; color: #444444; font-family: Ubuntu, Helvetica, Arial, sans-serif; font-size: 14px; line-height: 24px;"><br /></span></div> </div>

Maintain a minimum distance between the blowdown valve and restriction orifice

Following is a typical arrangement of blowdown pipe arrangement consisting blowdown valve (BDV), restriction orifice (RO), and downstream p...

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Conduit Classification Codes

<div dir="ltr" style="text-align: left;" trbidi="on"> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <span style="font-size: x-small;"><span style="line-height: 14px;">You might notice that, for a conduit there is coded printed on its surface.</span></span></div> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <span style="font-size: x-small;"><span style="line-height: 14px;"><span style="color: red;"></span></span></span></div> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <span style="font-size: x-small;"><span style="line-height: 14px;">Those coded are actually the BS Standard (BS EN 50086) whereby it indicates the technical data for the conduit itself.  In general, there are 6 (six) digits being used. Each digit will represent its own descriptions.</span></span></div> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: red; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <b><span style="font-size: x-small;"><span style="line-height: 14px;">1^st Digit</span></span></b></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td colspan="3" style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 427.5pt;" width="570"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Resistance To Compression</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Duty</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Newton</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">0</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Non-declared</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">-</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Very Light</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">125</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Light</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">320</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">3</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Medium</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">750</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">4</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Heavy</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1250</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">5</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Very Heavy</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">4000</span></div> </td></tr> </tbody></table> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: red; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <b><span style="font-size: x-small;"><span style="line-height: 14px;">2^nd Digit</span></span></b></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td colspan="3" style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 427.5pt;" width="570"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Resistance To Impact</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Duty</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Joule</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">0</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Non-declared</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">-</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Very Light</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">0.5</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Light</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">3</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Medium</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">4</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Heavy</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">6</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">5</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Very Heavy</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">20</span></div> </td></tr> </tbody></table> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: red; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <b><span style="font-size: x-small;"><span style="line-height: 14px;">3^rd Digit</span></span></b></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td colspan="2" style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 285pt;" width="380"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Minimum Service Temperature</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Temperature</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+5^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">-5^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">3</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">-15^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">4</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">-25^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">5</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">-45^oC</span></div> </td></tr> </tbody></table> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: red; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <b><span style="font-size: x-small;"><span style="line-height: 14px;">4^th Digit</span></span></b></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td colspan="2" style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 285pt;" width="380"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Minimum Service Temperature</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Temperature</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+60^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+90^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">3</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+105^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">4</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+120^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">5</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+150^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">6</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+250^oC</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">7</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">+400^oC</span></div> </td></tr> </tbody></table> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: red; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <b><span style="font-size: x-small;"><span style="line-height: 14px;">5^th Digit</span></span></b></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td colspan="2" style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 285pt;" width="380"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Resistance To Bending</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Temperature</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Rigid Conduit</span></div> </td></tr> </tbody></table> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: red; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <b><span style="font-size: x-small;"><span style="line-height: 14px;">6^th Digit</span></span></b></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td colspan="2" style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 285pt;" width="380"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Electrical Property</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Temperature</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 142.5pt;" width="190"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Electrical Insulating</span></div> </td></tr> </tbody></table> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <span style="font-size: x-small;"><span style="line-height: 14px;">Below is the example of three numbers of conduit based on different conduit classification code.</span></span></div> <div class="MsoNormal" style="background-color: #fefdfa; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr style="height: 23.45pt;"><td style="border: 1pt solid black; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Standard</b></span></div> </td><td colspan="3" style="border-style: solid solid solid none; border-width: 1pt 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 358.2pt;" width="478"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>BS EN 50086-2-1</b></span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Conduit</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Conduit 1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Conduit 2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Conduit 3</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Classification Code</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">222112</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">332112</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">442112</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Duty</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Light</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Medium</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">Heavy</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Compression (N)</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">320</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">750</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1250</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Impact (J)</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">1</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">2</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">6</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Heat Resistant</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">10</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">20</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">40</span></div> </td></tr> <tr style="height: 23.45pt;"><td style="border-right-color: black; border-style: none solid solid; border-width: medium 1pt 1pt; height: 23.45pt; padding: 0in 5.4pt; width: 120.6pt;" width="161"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;"><b>Flame Propagation Resistance</b></span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 129.1pt;" width="172"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">25</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">35</span></div> </td><td style="border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 23.45pt; padding: 0in 5.4pt; width: 114.55pt;" width="153"><div align="center" class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: center;"> <span style="font-size: x-small;">45</span></div> <div> <span style="font-size: x-small;"><br /></span></div> </td></tr> </tbody></table> </div>

Conduit Classification Codes

You might notice that, for a conduit there is coded printed on its surface. Those coded are actually the BS Standard (BS EN 50086) w...

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What is the difference between MCCB Type B, C and D?

<div dir="ltr" style="text-align: left;" trbidi="on"> <div class="MsoNormalCxSpFirst" style="background-color: #fefdfa; color: #333333; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;"> Below are the comparison between MCCB type B, C and D.</div> <div class="MsoNormalCxSpMiddle" style="background-color: #fefdfa; color: #333333; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;"> <br /></div> <table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="background-color: #fefdfa; border-collapse: collapse; border: medium none; color: #333333; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;"><tbody> <tr><td style="background-color: transparent; border: 1pt solid black; padding: 0in 5.4pt; width: 159.6pt;" valign="top" width="213"><div align="center" class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt; text-align: center;"> <b>Type B</b></div> </td><td style="background-color: transparent; border-bottom-style: solid; border-bottom-width: 1pt; border-color: black black black rgb(236, 233, 216); border-right-style: solid; border-right-width: 1pt; border-top-style: solid; border-top-width: 1pt; padding: 0in 5.4pt; width: 159.6pt;" valign="top" width="213"><div align="center" class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt; text-align: center;"> <b>Type C</b></div> </td><td style="background-color: transparent; border-bottom-style: solid; border-bottom-width: 1pt; border-color: black black black rgb(236, 233, 216); border-right-style: solid; border-right-width: 1pt; border-top-style: solid; border-top-width: 1pt; padding: 0in 5.4pt; width: 159.6pt;" valign="top" width="213"><div align="center" class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt; text-align: center;"> <b>Type D</b></div> </td></tr> <tr><td style="background-color: transparent; border-bottom-style: solid; border-bottom-width: 1pt; border-color: rgb(236, 233, 216) black black; border-left-style: solid; border-left-width: 1pt; border-right-style: solid; border-right-width: 1pt; padding: 0in 5.4pt; width: 159.6pt;" valign="top" width="213"><div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> The magnetic operating limit ranging from 3 to 5 times of its rated current.</div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> <br /></div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> Normally used for wiring protection in lighting, socket outlet and control circuit.</div> </td><td style="background-color: transparent; border-bottom-style: solid; border-bottom-width: 1pt; border-color: rgb(236, 233, 216) black black rgb(236, 233, 216); border-right-style: solid; border-right-width: 1pt; padding: 0in 5.4pt; width: 159.6pt;" valign="top" width="213"><div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> The magnetic operating limit ranging from 5 to 10 times of its rated current.</div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> <br /></div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> Normally used for overload and short circuit protection to protect for equipment with high making current.</div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> <br /></div> </td><td style="background-color: transparent; border-bottom-style: solid; border-bottom-width: 1pt; border-color: rgb(236, 233, 216) black black rgb(236, 233, 216); border-right-style: solid; border-right-width: 1pt; padding: 0in 5.4pt; width: 159.6pt;" valign="top" width="213"><div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> The magnetic operating limit ranging from 10 to 20 times of its rated current.</div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> <br /></div> <div class="MsoNormalCxSpMiddle" style="line-height: normal; margin: auto auto 0pt;"> Normally used to prevent undesired early trip for an electrical equipment with very high making current such as heavy motor, transformer, etc.</div> <div> <div class="separator" style="clear: both; text-align: center;"> <br /></div> <br /></div> </td></tr> </tbody></table> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEieEzJCg2XdJQR6M8zsazSpgxXXX4ilXQW2GmbODjv05da68pIKAhFQT0TnARvYwQnyhcQbnvwYs_LDUE9E9591B0DIEXK7sKOBYtUxK8TNJBSyWmIlSwX2SYJpKLb7jBvps9K3leEx3N9h/s1600/mccb-moulded-case-circuit-breaker.png" imageanchor="1" style="background-color: #fefdfa; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px; margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEieEzJCg2XdJQR6M8zsazSpgxXXX4ilXQW2GmbODjv05da68pIKAhFQT0TnARvYwQnyhcQbnvwYs_LDUE9E9591B0DIEXK7sKOBYtUxK8TNJBSyWmIlSwX2SYJpKLb7jBvps9K3leEx3N9h/s1600/mccb-moulded-case-circuit-breaker.png" /></a></div>

What is the difference between MCCB Type B, C and D?

Below are the comparison between MCCB type B, C and D. Type B Type C Type D The magnetic operating limit ranging from 3 to 5 t...

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