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Electrician Talk Forum
RCCB tripping - help needed..
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<blockquote data-quote="mattydubster" data-source="post: 483886" data-attributes="member: 31591"><p>Thanks for the reply. </p><p></p><p>The AC unit was just plugged in, so was on a socket circuit supplied by the RCD, so all my tests have been done with the AC unplugged.</p><p></p><p>As for a process of circuit elimination, it has been a bit interesting - there are 8 circuits protected by the RCD, and when 7 of them are on, and it can be any 7, there is a good chance of the RCD passing a ramp test. But when I put the 8th one on, which again could be any of them, it seems to play up a lot more. And it does also tend to trip out even when I do a Zs reading on the socket closest to the board.</p><p></p><p>I thought I was becoming a bit of a master when it comes to fault finding but when you have 2 rcd's in a row that won't work then you start to think it's something else...</p></blockquote><p></p>
[QUOTE="mattydubster, post: 483886, member: 31591"] Thanks for the reply. The AC unit was just plugged in, so was on a socket circuit supplied by the RCD, so all my tests have been done with the AC unplugged. As for a process of circuit elimination, it has been a bit interesting - there are 8 circuits protected by the RCD, and when 7 of them are on, and it can be any 7, there is a good chance of the RCD passing a ramp test. But when I put the 8th one on, which again could be any of them, it seems to play up a lot more. And it does also tend to trip out even when I do a Zs reading on the socket closest to the board. I thought I was becoming a bit of a master when it comes to fault finding but when you have 2 rcd's in a row that won't work then you start to think it's something else... [/QUOTE]
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RCCB tripping - help needed..
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