Replacing a CU

[carl9254]

Just a quick question, when changing a CU do they all have to be split rcd board now to meet regs or can you have everything on 1 rcd or even have the rcd as the main switch cause i know wylex still sell these boards.

 

[Guest123]

Ideally you should split circuits up as much as you can hence the dual RCD boards. Obviously if it's a small install then an RCD main switch board may suffice, although RCBO's would be a better, but more expensive option.

314 comments on the "division of an installation to minimise the inconvenience in the event of a fault"

Obviously all protected is better than none but to comply fully there should be more than one RCD.

 

[carl9254]

Ok, as long as it meets the regs in someway im happy, it just seems pointless putting a few circuits on a split board, plus the customer wants to keep it cheap so cant rcbo it.

 

[Guest123]

How may circuits are there???

You can get a fully loaded dual RCD board for £60ish nowadays.

 

[mally4601]

the only problem with 1 rcd is that if it trips every thing goes out , i would go with 2 rcds , even know there is only a few circuits , prob save u having to go back later on to put another one in .