RCD shinaniginzzzzzz

[John tomo 1972]

Just testing at socket , tripping fine just that when I reset it the other RCD tripped

 

[Richard Burns]

Possibly a high resistance neutral earth fault on the left hand RCD circuits. Remove the neutrals from the left hand neutral bar, left hand MCBS off and switch on the right hand RCD, mcbs on, and see if the high initial current trips the left hand one, reattach one at a time to narrow down.

 

[LankyWill]

Disconnect the neutrals and earths for the affected RCD and then it should reset. Reconnect until the offending circuit is found, im surprised you haven’t stubbled across this type of fault before.

 

[Risteard]

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

To be fair it's something I almost never use. I'd use it as an ordinary clamp far more than as a mA clamp. I wouldn't really consider it an essential piece of equipment for most applications.

 

[Octopus]

To be fair it's something I almost never use. I'd use it as an ordinary clamp far more than as a mA clamp. I wouldn't really consider it an essential piece of equipment for most applications.

When diagnosing RCD tripping it's an important measurement to take ....

 

[Deleted account]

Just testing at socket , tripping fine just that when I reset it the other RCD tripped

If it tripped when resetting that is a possible indicator of a loose connection inside the board.
When pushing up the rcd it may move the components within the board, thus making any loose connections worse, thus the trip.