Hi all,
I’ve had a headache of a fault and can’t think what to do next.
The house has an RCD main switch, and I’ve verified the circuit which has the fault to be the kitchen ring final. The RCD has tripped once without interference, and several times when a switched fuse spur is turned on. It doesn’t always trip, sometimes it can take 5+ switches on and off to trip.
The layout is as follows: twin socket above worktop on ring, spur out feeding FCU. Load from FCU goes down below worktop to feed a connection plate with a dishwasher and a washing machine hardwired in. I will be adding a separate FCU so they’re controlled independently.
I’ve done an IR test on the whole circuit, and found nothing of note. I’ve changed the FCU, I’ve bypassed the connection plate. It still trips intermittently. If both loads and completely removed the RCD will not trip. However, if I connect the appliances to another circuit on the same RCD it will not trip. What am I missing here?
Thanks for the help.
I’ve had a headache of a fault and can’t think what to do next.
The house has an RCD main switch, and I’ve verified the circuit which has the fault to be the kitchen ring final. The RCD has tripped once without interference, and several times when a switched fuse spur is turned on. It doesn’t always trip, sometimes it can take 5+ switches on and off to trip.
The layout is as follows: twin socket above worktop on ring, spur out feeding FCU. Load from FCU goes down below worktop to feed a connection plate with a dishwasher and a washing machine hardwired in. I will be adding a separate FCU so they’re controlled independently.
I’ve done an IR test on the whole circuit, and found nothing of note. I’ve changed the FCU, I’ve bypassed the connection plate. It still trips intermittently. If both loads and completely removed the RCD will not trip. However, if I connect the appliances to another circuit on the same RCD it will not trip. What am I missing here?
Thanks for the help.