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Fault find domestic lighting circuit
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<blockquote data-quote="UNG" data-source="post: 495307" data-attributes="member: 8931"><p>While the circuit has no load being used the cables to the switches remain live from what you have said so far this installation sounds like it is quite old and it will probably be a cable or cable joint / junction breaking down. The fault has a high resistance and therefore does not instantaneously blow the replacement fuse wire</p><p></p><p>The old wire fuses are not that reliable and can under the right conditions carry a fault current for a number of hours before they blow, this would be noticeable by the fuse carrier becoming warm over a number of hours</p><p></p><p>It sounds like this fault is something that needs looking at sooner rather than later</p></blockquote><p></p>
[QUOTE="UNG, post: 495307, member: 8931"] While the circuit has no load being used the cables to the switches remain live from what you have said so far this installation sounds like it is quite old and it will probably be a cable or cable joint / junction breaking down. The fault has a high resistance and therefore does not instantaneously blow the replacement fuse wire The old wire fuses are not that reliable and can under the right conditions carry a fault current for a number of hours before they blow, this would be noticeable by the fuse carrier becoming warm over a number of hours It sounds like this fault is something that needs looking at sooner rather than later [/QUOTE]
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