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RCD - all MCBs off (no L) + no N-output from RCD connected (no N) = still trips instantly
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Pete C
Posts: n/a
On 1 Nov 2004 17:15:43 -0800,
(dorothy)
wrote:
RCD is MEM 100A 30ma RCD - *with 3rd earth tail* connected
o MCBs all OFF -- no L connection to house
o RCD-N-output disconnected -- no N connection to house
RCD still trips instantly.
I found this after:
o RCD would not reset - all MCBs off
o RCD would not reset - all MCBs off & all appliances dbl-pole off / unplugged
o RCD would not reset - all MCBs off & most cables L+N disconnected
o RCD would not reset - all MCBs off & RCD N-output to N-bar disconnected
So I'm sort of running out of options.
I don't understand how it can trip with no L connected or N connected.
The meter also powers a separate RCD for outside lights, skt, shed.
So I'm powering fridges & a few backup items off that for now.
Q: Does this sound like a faulty RCD - only 7-10yrs old?
No call-out available tonight :-( *blink* *blink*
Hi,
Try disconnecting live from the RCD too, even a spiders web can make
them trip so check for these around the terminals as well.
Also try it with the earth tail connected or disconnected, maybe it's
a safety feature for earth rod/TT installations.
cheers,
Pete.
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