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Borrowed Neutral
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<blockquote data-quote="davetheglitz" data-source="post: 2816" data-attributes="member: 173"><p>Thanks Ext - yes I did post on the other place as well - sometimes it can be useful but often it turns into a playground! In this case it was useful - as was your reply.</p><p></p><p>Just breaking down the method:-</p><p></p><p>1) Switch all lights</p><p></p><p>2) Switch off all breakers off/remove fuses.</p><p></p><p>3) Remove neutrals one group at a time and check continuity to neutral bus bar. If there is continuity there is a borrowed neutral. Mark neutral.</p><p></p><p>4) Continue until all checked.</p><p></p><p>Need to do this with no power on board. Only problem is that in many offices the workers object to losing all power for any length of time - so if this is a problem put the fact that this is not tested as a limitation.</p><p></p><p>Does that sound about right to you?</p><p></p><p>Incidentally none of this would show up from the recommended tests as per 2391. How many inspectors actually check for borrowed neutrals?</p><p></p><p>Cheers</p><p></p><p>Dave</p></blockquote><p></p>
[QUOTE="davetheglitz, post: 2816, member: 173"] Thanks Ext - yes I did post on the other place as well - sometimes it can be useful but often it turns into a playground! In this case it was useful - as was your reply. Just breaking down the method:- 1) Switch all lights 2) Switch off all breakers off/remove fuses. 3) Remove neutrals one group at a time and check continuity to neutral bus bar. If there is continuity there is a borrowed neutral. Mark neutral. 4) Continue until all checked. Need to do this with no power on board. Only problem is that in many offices the workers object to losing all power for any length of time - so if this is a problem put the fact that this is not tested as a limitation. Does that sound about right to you? Incidentally none of this would show up from the recommended tests as per 2391. How many inspectors actually check for borrowed neutrals? Cheers Dave [/QUOTE]
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