RCD shinaniginzzzzzz

[John tomo 1972]

did an RCD test today on a cu and when I went to reset it the left hand RCD tripped. No tripping when circuits up an running just when I did the RCD test could anyone give me a heads up on what it could be thanks guys.

 

[Andy5678]

Big fingers?

 

[John tomo 1972]

Lol ,

 

[Octopus]

Probably got earth leakage on 1 or more circuits ...

Have you got a earth leakage clamp meter?

 

[John tomo 1972]

No should I invest in one or is there another method of finding out

 

[Andy5678]

As murdoch said.

Also Have you tested both RCDs fully and ramp tested?

 

[Octopus]

No should I invest in one or is there another method of finding out

You HAVE to invest in one ..... it’s not optional

 

[Wilko]

Not sure I've understood ... tested the RH RCD and it tripped as expected - then - reset RH RCD and LH RCD tripped immediately.
Is that it?

 

[John tomo 1972]

Yep that’s it

 

[bigspark17]

Were you testing both rcds at load out side of the rcd with no load connected?