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Electrical Inspection & Testing Forum
MCB Lock Offs...
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<blockquote data-quote="kme" data-source="post: 4227" data-attributes="member: 113"><p>Now I seem to have read in the new bible, that if the system is TN, the neutral can be taken as being at earth potential; therefore only requiring SP disconnect.</p><p></p><p>As long as I`d tested polarity, I would personally only isolate at the MCB.</p><p></p><p>IMHO for what it`s worth.</p></blockquote><p></p>
[QUOTE="kme, post: 4227, member: 113"] Now I seem to have read in the new bible, that if the system is TN, the neutral can be taken as being at earth potential; therefore only requiring SP disconnect. As long as I`d tested polarity, I would personally only isolate at the MCB. IMHO for what it`s worth. [/QUOTE]
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