Electric Shower wiring

[Anarki]

Hi, I'm new to the site so hello everyone.

I'm in the process of planning a renovation to my house, part of which is fitting an electric shower, to which I just have a quick question.

Currently there is an old wooden backed Wylex fuse board, this is getting ripped out. I've got a new consumer unit to fit - It's 100A, 10 way, dual 63A RCD's and I've had it configured with 4x 32A, 2x 16A, 2x 6A, 1x 40A and 1x 45A MCB's.

The electric shower I have is a 9.5KW Mira, I have about a 12 meter run of 10mm T+E which I was going to wire into the 45A MCB, which will be on one of the 63A RCD's in the consumer unit.

Is this the correct way of doing it, or should the electric shower be on its own RCD without and other MCB's on it?

Thanks in advance.

 

[flameport]

It will probably do, provided the cable isn't run through insulation.
It's also notifiable, not that anyone cares about that.

Connecting an electric shower to a dual RCD consumer unit would not be the first choice.
However I wouldn't fit a dual RCD consumer unit at all, or have an electric shower unless it was the only possible option.

 

[Taylortwocities]

Surely the electrician who is fitting the new consumer unit will be able advise you.

And most of us DO care about notification. The new shower circuit and change of consumer unit are both notifiable.

 

[ban-all-sheds]

I've got a new consumer unit to fit

Wouldn't it have been cheaper and less risky to have your electrician supply it?

Is your electrician happy with the make?

- It's 100A, 10 way, dual 63A RCD's and I've had it configured with 4x 32A, 2x 16A, 2x 6A, 1x 40A and 1x 45A MCB's.

Did your electrician decide on those?

Is this the correct way of doing it, or should the electric shower be on its own RCD without and other MCB's on it?

What does your electrician say?

Why aren't you asking him? He's the one who will have to sign an EIC to say that his design and his construction and his testing complied with BS 7671, and he's the one who will have to certify to your local Building Control department that his work complied with the Building Regulations.

So it really can only be him to make decisions like these.

 

[flameport]

And most of us DO care about notification.

People in the electrical industry do.
The vast majority of the general public neither know or care.

 

[Johnmelad]

It will probably do, provided the cable isn't run through insulation.
It's also notifiable, not that anyone cares about that.

Connecting an electric shower to a dual RCD consumer unit would not be the first choice.
However I wouldn't fit a dual RCD consumer unit at all, or have an electric shower unless it was the only possible option.

How would you do it? And you are right about DIY people not caring about notification when doing themselves.

 

[Iggifer]

It will probably do, provided the cable isn't run through insulation.
It's also notifiable, not that anyone cares about that.

Connecting an electric shower to a dual RCD consumer unit would not be the first choice.
However I wouldn't fit a dual RCD consumer unit at all, or have an electric shower unless it was the only possible option.

How would you do it? And you are right about DIY people not caring about notification when doing themselves.

I would be using (and have in my house) an RCBO board. The convenience and flexibility far, far outweighs the added cost.