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63A 3 phase socket
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<blockquote data-quote="apprentice87" data-source="post: 462158" data-attributes="member: 13534"><p>Ok...</p><p></p><p>So the cable is a 10mm 4 core, Obviously the armour will be used as CPC..</p><p></p><p>R1 + R2 for the cable is 0.2488</p><p></p><p>Ze for the supply is..</p><p></p><p>TNS 0.8</p><p></p><p>TNCS 0.35</p><p></p><p>This will give a Zs of..</p><p></p><p>TNS 1.0488</p><p></p><p>TNCS 0.5988</p><p></p><p>And that mind you, is BEFORE you allow for the increase in R1 + R2 under fault conditions due to cable heating...</p><p></p><p>Might be a few snags here.. [apart from, not sure about if it is TNCS, taking it 45 metres outside the equipotential zone of the building though..]</p></blockquote><p></p>
[QUOTE="apprentice87, post: 462158, member: 13534"] Ok... So the cable is a 10mm 4 core, Obviously the armour will be used as CPC.. R1 + R2 for the cable is 0.2488 Ze for the supply is.. TNS 0.8 TNCS 0.35 This will give a Zs of.. TNS 1.0488 TNCS 0.5988 And that mind you, is BEFORE you allow for the increase in R1 + R2 under fault conditions due to cable heating... Might be a few snags here.. [apart from, not sure about if it is TNCS, taking it 45 metres outside the equipotential zone of the building though..] [/QUOTE]
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63A 3 phase socket
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