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Do-It-Yourself (DIY) Question & Answer Forum
Lighting Circuit Blowing........
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<blockquote data-quote="batty" data-source="post: 28585" data-attributes="member: 66"><p>What are the results of the insulation test is it shorting l-e or l-n. Is it three plate wiring or on joint boxes or to switches and then to lights. More info is needed. What is wiring made of lead, rubber or pvc. Their is no quick way to test if you have a fault. I had a fault on a socket circuit the other day. Every socket was reverse polarity apart from one. It took me all day to find faulty piece of cable. My clamp meter said circuit was ok but on insulation resistance at 250v it was shorting phase to earth. The circuit was in use but not blowing fuse. I still do not understand why I was getting reverse polarity but if I had meggered earlier I would have saved a lot of time.</p><p></p><p>Batty</p></blockquote><p></p>
[QUOTE="batty, post: 28585, member: 66"] What are the results of the insulation test is it shorting l-e or l-n. Is it three plate wiring or on joint boxes or to switches and then to lights. More info is needed. What is wiring made of lead, rubber or pvc. Their is no quick way to test if you have a fault. I had a fault on a socket circuit the other day. Every socket was reverse polarity apart from one. It took me all day to find faulty piece of cable. My clamp meter said circuit was ok but on insulation resistance at 250v it was shorting phase to earth. The circuit was in use but not blowing fuse. I still do not understand why I was getting reverse polarity but if I had meggered earlier I would have saved a lot of time. Batty [/QUOTE]
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