Different type MCD but same brand

[M1AK]

Hi all,

We need to fit a additional MCD to our existing GE consumer unit, which has all Type E style MCDs on it. This additional MCD is for underfloor heating that we need to wire in. I've been told to only fit one of the same brand so I have got a 20A GE Type B MCD but its a Type SP.

Is it OK to fit this?

 

[PrinceofDarkness]

"SP" isn't an actual 'type' of MCB. It merely denotes that it's a single pole (SP) device. The actual 'type' (for domestic innstallations) is Type B.

If you have a GE board and a compatible MCB, use it........


Lucia.

 

[sparkwright]

Have you made provision for 30 mA RCD protection on this circuit?

 

[M1AK]

Thanks for the replies. I'm not sure how to find out if its compatible but it does fit fine and is the same brand so am I right to assume that the MCD will be OK? It looks a little different from the front visually but other than that its similar to the others.

Sparkwright - yes there will be a 30mA passive RCD Spur within this circuit also.

 

[sparkwright]

It sounds like your MCB probably is compatible with the consumer unit, if it's the same make and it fits comfortably.

Send pictures if in any doubt.