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What on Earth?
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<blockquote data-quote="Rob_the_rich" data-source="post: 456046" data-attributes="member: 8419"><p>I was fitting a nexus 45A cooker switch last week which had 2 earth connections. The metal strip between the two connections was 6mm wide by 1mm thick, and looked like galvanized steel. The instructions said to put an earth in each. But steel is 9 times less conductive than copper. So the CSA should have been 9x2.5=22.5mm squared, not 6mm squared. Which equates to reducing the CSA of the CPC by two thirds.</p><p></p><p>I used the same terminal for both cpcs.</p></blockquote><p></p>
[QUOTE="Rob_the_rich, post: 456046, member: 8419"] I was fitting a nexus 45A cooker switch last week which had 2 earth connections. The metal strip between the two connections was 6mm wide by 1mm thick, and looked like galvanized steel. The instructions said to put an earth in each. But steel is 9 times less conductive than copper. So the CSA should have been 9x2.5=22.5mm squared, not 6mm squared. Which equates to reducing the CSA of the CPC by two thirds. I used the same terminal for both cpcs. [/QUOTE]
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