Thread: Bizarre reason for RCD nuisance tripping...
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Andy Wade
 
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Default Bizarre reason for RCD nuisance tripping...
wrote:

lol, weird! Just goes to prove v-ELCBs are better than RCDs

Ah, you were right all along... ;-)

Actually though, something about the story doesn't quite ring true, &
I'm not sure whether to believe it.

If the bedside lampholder was plastic bodied and/or unearthed, most of
the shock current would be phase-neutral. I'd be surprised if there was
enough earth leakage to trip a (presumably) 30 mA RCD, unless her bed
was rather damp.

If the lampholder was earthed metal, why did the old ELCB not trip?

I suppose that a plastic/unearthed lampholder, replaced with earthed
metal after the re-wiring would explain it though.

--
Andy
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