CU tripped
- Thread starter alang99
- Start date
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No - it's an indication of what an RCD does when you create a N-E fault. I take it that your CU does have an RCD incomer? And that there was no accompanying fizzpopsparkflashbang from the cable where you cut it?
Just switching the MCB only isolates the live conductor, not neutral, so when you cut through the cable, you short neutral to earth and the RCD proceeds to do what it says on the tin.
Just switching the MCB only isolates the live conductor, not neutral, so when you cut through the cable, you short neutral to earth and the RCD proceeds to do what it says on the tin.
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