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RCD main switch board
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<blockquote data-quote="NozSpark" data-source="post: 198767" data-attributes="member: 601"><p>I don't get the reason why you'd need the 100a main switch and 50a MCB... Surely you have overload protection at the 3ph board??</p><p></p><p>I guess that the 3ph board has an external isolator?</p><p></p><p>Now, to your new board,,,, its in a commercial building. Do the circuits actually need to have RCD protection? If not change the RCD for a main switch!</p></blockquote><p></p>
[QUOTE="NozSpark, post: 198767, member: 601"] I don't get the reason why you'd need the 100a main switch and 50a MCB... Surely you have overload protection at the 3ph board?? I guess that the 3ph board has an external isolator? Now, to your new board,,,, its in a commercial building. Do the circuits actually need to have RCD protection? If not change the RCD for a main switch! [/QUOTE]
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RCD main switch board
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