UK Adding RCD spur doesn't set but consumer RCD is fine

Stevie186 · Nov 30, 2019

Hi all,

I have ran added a fused RCD spur off a socket to feed some electric gates. I figured as it was going outside I would put an RCD on the spur on it as I had one kicking around I believe it's probably unnecessary but when I connect it to the supply it will never set and constantly trips? The RCD in the consumer unit is fine though and I have tested and it trips out as it should? I can't understand no matter where I try and put this RCD spur it never sets, I tried wiring into a few different sockets and still the same. Any ideas? I have tried 2 different units and still the same They are the safetysure metal clad RCDs spurs if that makes any difference.

Thanks

Steve

DPG · Dec 1, 2019

Strima said:
As I understand it using an RCD FCU is not currently compliant with the regs and would be a departure.

This is to be corrected in a future edition I believe.

Risteard · Dec 1, 2019

DPG said:
This is to be corrected in a future edition I believe.

Debatable. It appears to have been a deliberate omission due to the wording of BS 7288:2016.

Strima · Dec 1, 2019

Risteard said:
Debatable. It appears to have been a deliberate omission due to the wording of BS 7288:2016.

This is what I'm hearing, it's down to the manufacturers to state their devices comply for use as additional protection. It wasn't an omission but someone finally noticed they didn't comply.

Not many electricians are aware of this but then take into account other trades, such as plumbers, trying to do the right thing and are unaware of this change. this needs to be widely advertised.