Mk RCB replacement

[ladybreaker]

Hello, I suspect my existing RCB defective and would like to replace it, its a 100A LN7700

But I got the feeling its discontinued.

With what can I replace it, it,s on a 14 way CU

Thanks if you can advise

 

[AndyPRK]

Post a pic

look on eBay.

 

[ladybreaker]

 

[333rocky333]

More likely a fault on an outgoing circuit, theres a good chance you will be wasting your time and money.
just going by the labelled circuits you appear to have a fair amount of circuits that are prone to Rcd tripping faults

 

[AndyPRK]

Or it could be a build up of earth leakage across the circuits

 

[AndyPRK]

Get an electrican to test the circuit and maybe replace with an all rcbo board

 

[Taylortwocities]

I see an RCD. Is that the item that is tripping. ???
As above, it will almost certainly be one of the circuits causing this, not the RCD.

I smell problems when I see words like summer house, pond and pond heater (45amps, that’s a big heater!).

Get an electrician to test the connected circuits one at a time. That will probably identify the guilty party.

PS It is very bad practice to have one up front RCD. It is a single point of failure which is against guidelines.
It needs sorting out, but if you can afford a Tesla, you can afford a couple of hours of a competent electrician.

 

[chivers67]

Looks like every circuit is SWA or am I mistaken? Lots of power consumed!

 

[333rocky333]

Looks like every circuit is SWA or am I mistaken?

I thought that too, all on a cable tray as well, I am quessing this is not your average install, likely an extra Db in an outbuilding rather than the main house.

 

[ladybreaker]

Will get someone to investigate
Thank you for your input

 

[ericmark]

I read Tesla and it rings alarm bells. In the main EV charging points need type A or better RCD and Tesla's own charge point needs type B.

Needs investigating.