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Electrical Inspection & Testing Forum
Another borrowed neutral question
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 3623" data-attributes="member: 250"><p>Ditto steptoes point need to verify IR test reading on suspect circuit..</p><p></p><p>before assuming borrowed neutral...</p><p></p><p>When all basics have been proved then start checking for the more obscure.</p><p></p><p>Is it a downstairs or upstairs socket circuit??</p><p></p><p>Borrowed neutral on sockets is a far more rare bird than on lighting circuits..</p><p></p><p>But I have had the occasional one such as..</p><p></p><p>Downstairs light circuit joined to Upstairs sockets... when DIY bob can't find a neutral on the light circuit and he is adding a new light somewhere, so he joins it onto the nearest socket j/box under the floor.</p><p></p><p>More common things to RCD trip socket circuits may be...</p><p></p><p>duff appliance plugged in somewhere..</p><p></p><p>fridges/freezers with dodgey pump motors..</p><p></p><p>electric kettles with the cordless plug-in base arrangement, and the base has damp in it!</p><p></p><p>unsheathed earth wire touching a neutral in a socket/spur/Jbox...</p><p></p><p>table lamp with wires crossed in the 13a plug top.</p><p></p><p>Keep your investigations simple to start off with<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p> ?:| ? :|</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 3623, member: 250"] Ditto steptoes point need to verify IR test reading on suspect circuit.. before assuming borrowed neutral... When all basics have been proved then start checking for the more obscure. Is it a downstairs or upstairs socket circuit?? Borrowed neutral on sockets is a far more rare bird than on lighting circuits.. But I have had the occasional one such as.. Downstairs light circuit joined to Upstairs sockets... when DIY bob can't find a neutral on the light circuit and he is adding a new light somewhere, so he joins it onto the nearest socket j/box under the floor. More common things to RCD trip socket circuits may be... duff appliance plugged in somewhere.. fridges/freezers with dodgey pump motors.. electric kettles with the cordless plug-in base arrangement, and the base has damp in it! unsheathed earth wire touching a neutral in a socket/spur/Jbox... table lamp with wires crossed in the 13a plug top. Keep your investigations simple to start off with:) ?:| ? :| [/QUOTE]
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Another borrowed neutral question
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