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Electrician Talk Forum
What is the point of the RCD?
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<blockquote data-quote="Andy™" data-source="post: 439770" data-attributes="member: 2012"><p>the idea behind them is a good one and i think it would be madness to get rid of them all together, although there does seem to be too much reliance on them. but there is some serious flaws in the testing and design of them. personally, if i tested an RCD at the end of the circuit and it failed but it passed at the RCD where you supposed to test, then id still say that was a failure and replace (if new) or recommend replacement (if existing).</p><p></p><p>the simple fact they they require testing periodically by the user (unlike MCB &amp; fuses that do not need anything) imo suggests a design issue common to all of them.</p><p></p><p>maybe they should concentrate on improving what we already have instead of coming up with other lettuced like arc fault breakers...</p></blockquote><p></p>
[QUOTE="Andy™, post: 439770, member: 2012"] the idea behind them is a good one and i think it would be madness to get rid of them all together, although there does seem to be too much reliance on them. but there is some serious flaws in the testing and design of them. personally, if i tested an RCD at the end of the circuit and it failed but it passed at the RCD where you supposed to test, then id still say that was a failure and replace (if new) or recommend replacement (if existing). the simple fact they they require testing periodically by the user (unlike MCB & fuses that do not need anything) imo suggests a design issue common to all of them. maybe they should concentrate on improving what we already have instead of coming up with other lettuced like arc fault breakers... [/QUOTE]
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What is the point of the RCD?
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