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Modules for old consumer unit
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<blockquote data-quote="Doc Hudson" data-source="post: 474980" data-attributes="member: 1607"><p>The point is that so far you have proved nothing and just swapping a component that you have not confirmed to be fault will leave you none the wiser if or when the replacement RCD trips. As you mention you have knowledge of electronics and electrical engineering are you aware that your RCD must trip with a leakage current of 30ma but must not trip at 15ma. and there are specified times that the RCD must operate at when tested at 30ma and 150ma. These items can be easily tested with an approved RCD test meter. 30ma is a very small current eg. approx. 7watts worth of load , maybe the equivalent of the current needed to operate one LED lamp. So whether you do random swapping or actually carry out the industry recognised tests on the wiring you can at least prove that the RCD is not faulty and that there is no direct cable damage contributing towards your problem. The condition of the cables can be verified with continuity and insulation resistance tests as per guidance in BS7671 wiring regulations. Any installation with single RCD means when the RCD trips you don't even know which circuit(s) is or are causing the leakage current.</p><p></p><p>Doc H.</p></blockquote><p></p>
[QUOTE="Doc Hudson, post: 474980, member: 1607"] The point is that so far you have proved nothing and just swapping a component that you have not confirmed to be fault will leave you none the wiser if or when the replacement RCD trips. As you mention you have knowledge of electronics and electrical engineering are you aware that your RCD must trip with a leakage current of 30ma but must not trip at 15ma. and there are specified times that the RCD must operate at when tested at 30ma and 150ma. These items can be easily tested with an approved RCD test meter. 30ma is a very small current eg. approx. 7watts worth of load , maybe the equivalent of the current needed to operate one LED lamp. So whether you do random swapping or actually carry out the industry recognised tests on the wiring you can at least prove that the RCD is not faulty and that there is no direct cable damage contributing towards your problem. The condition of the cables can be verified with continuity and insulation resistance tests as per guidance in BS7671 wiring regulations. Any installation with single RCD means when the RCD trips you don't even know which circuit(s) is or are causing the leakage current. Doc H. [/QUOTE]
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