Yes, Like I say, if its private work we fit the Fusebox ones and if its council we fit also fit the Wylex ones with SPD's, Edwardes have a good deal on the wylex ones at the moment.
Off track slightly but the new Wylex stuff is pretty crap, you can't remove the din rail so have to take everything to bits just to get the RCD's out, they are exactly the same as the new Crabtree stuff as well so it all comes out of the same factory. And those metal blanks that slide about all ove the show when you are trying to get the lid on, woeful, although on the last board I did it came with different blanks that could clip in from the front.
As do Fusebox and Hager. I only use this type now.Wylex make blank modules that clip on the din rail
As do Fusebox and Hager. I only use this type now.
Yes, but not for the obvious reasons.Does it really make that much difference if a 6A or 32A MCB is on the receiving end of a bolt of lightening?
See Reg 531.3.2 unwanted tripping (ii) rcbos should be considered. Also see section 314A 6A would possibly trip well before the SPD had a chance to operate, rendering it useless. For the cost of another MCB…
As for RCBO vs dual rcd… it’s wrong to say he should fit an all RCBO board. There’s nothing in the regs preventing using a dual rcd….. and it might be all the customer can afford.
The way I read that is if you expect tripping then minimise it. Under a normal situation in a domestic setting you don't expect any RCD to trip whether its an RCBO or dual RCD board. However if you have a bank of computers that have a bit of earth leakeage then you might get unwanted tripping so use RCBO's instead.See Reg 531.3.2 unwanted tripping (ii) rcbos should be considered. Also see section 314
The reg states it just something to be considered. So its up to you if you choose to follow it. I prefer to use separate rcbos, but if the spec requires a split load board thats what will be installed . Just to add regarding spds. Hagers connect straight to the main switch with no OCD in the boardThe way I read that is if you expect tripping then minimise it. Under a normal situation in a domestic setting you don't expect any RCD to trip whether its an RCBO or dual RCD board. However if you have a bank of computers that have a bit of earth leakeage then you might get unwanted tripping so use RCBO's instead.
So do the Wylex and Crabtree ones, the first one I did I put the earth in the bottom and then thought why is there an earth position in the top as well. I'd set the board up with a space to the right of the main switch as well so it was all a kerfuffle to put it right again. I wish manufacturers would all stick to a similar design.The reg states it just something to be considered. So its up to you if you choose to follow it. I prefer to use separate rcbos, but if the spec requires a split load board thats what will be installed . Just to add regarding spds. Hagers connect straight to the main switch with no OCD in the board