Time Lag to restore power after resetting RCD

Joined
25 Feb 2019
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Hello,

I visited a job yesterday - student house, after report of the dishwasher tripping the electrics.

There was a small split around the power button, so easy one I'll replace the dishwasher.

However I ran the dishwasher to observe what was tripping, and as reported after about 10minutes into the cycle the RCD tripped. It didn't knock any breakers off. I disconnected the dishwasher and turned the RCD back on. Then I noticed something I've never come across before - there was a lag of between 8-10 minutes before the power returned to the rest of the house on the socket circuit run via this Rcd. Any ideas?

Cheers,
Craig
 
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