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<blockquote data-quote="user 6351" data-source="post: 84378" data-attributes="member: 6351"><p>If you've got a copy of the book "Snags and solutions" (the second book, not the earthing and bonding one) then there is a cracking explanation in there with some lovely pictures... I got a copy from the library so haven't got a copy that I can scan at the moment (will see if I can loan it again and do so later).</p><p></p><p>The problem that I've found is that if you put the two circuits on separate sides of the board, then because the RCDs will have slightly different reaction times, then there is no knowing which will trip first, and it seems to vary too.</p><p></p><p>I've worked round it by ignoring discrimination (I know, but it's easier than chasing out and adding a new neutral) and moving both MCBs onto one side of the board. Simple, but effective!</p></blockquote><p></p>
[QUOTE="user 6351, post: 84378, member: 6351"] If you've got a copy of the book "Snags and solutions" (the second book, not the earthing and bonding one) then there is a cracking explanation in there with some lovely pictures... I got a copy from the library so haven't got a copy that I can scan at the moment (will see if I can loan it again and do so later). The problem that I've found is that if you put the two circuits on separate sides of the board, then because the RCDs will have slightly different reaction times, then there is no knowing which will trip first, and it seems to vary too. I've worked round it by ignoring discrimination (I know, but it's easier than chasing out and adding a new neutral) and moving both MCBs onto one side of the board. Simple, but effective! [/QUOTE]
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