I need a narrow Shower CU

[ProDave]

As the title says. I need to squeeze a shower CU in between the meter and the existing Wylex fuse box in a gap measuring 105mm.

All the "packaged" shower CU's seem to start at 115mm wide.

Moving the fuse box over is a can of worms I don't want to open. Moving the meter would test the abilities of the seal fairy to the limit.

So what can I fit in my 105mm gap?

The best I can come up with is several people make "3 module enclosures" which would house a 2 module RCD and a single MCB

Can anyone think of a reason why not? Is ther anything to say you can't effectively make your own single way CU?

Or does anyone know of a packaged shower CU no more than 105mm wide? does not need to be waterproof.

 

[NozSpark]

DP RCBO in a small enclosure?

 

[Badfish]

Try protek they do an enclosure that is 90mm wide

 

[ProDave]

Sounds good Noz.

A 40A / 30mA 2 pole 2 module RCBO in a 3 module enclosure that's 95mm wide.

Even better, Wylex do a 2 module enclosure just 60mm wide.

I think that will avoid having to trouble the seal fairy to move the meter. :innocent

 

[NozSpark]

Sounds perfect

 

[sellers]

2 module enclosure with an rcd in, using the existing fuse for overload protection, unless you are searching for more ways

 

[ProDave]

2 module enclosure with an rcd in, using the existing fuse for overload protection, unless you are searching for more ways

It's a new circuit. Existing box is wylex rewireable with no spare capacity, so it will be a completely new CU just for the shower so needs over current protection as well as RCD.

I can't fault the 2 pole 2 module RCBO idea so I'll go with that.

 

[M107]

DP 2 module rcbo..............If only somebody had agreed with a spot of sponsorship

 

[Jono Pashley]

1 Way Insulated Consumer Unit

throw the main switch chuck a rcd and mcb in and your done.

 

[ProDave]

Thanks, I missed that one.

but the 2 pole 2 module rcbo and t module box is already on order now.

 

[Cirrus]

Just get the seal fairies to move the meter a few mill. I hear it is really quick and easy to do, of course I would never engage in such practices myself.

 

[ProDave]

It's been a bad day today.

All was going well. Wired in the shower. Wired in the shower switch. Wired in the Contactum 2 module RCBO in the little wylex enclosure. Nice neat solution, fitted the space a treat.

Dead testing all okay.

Re energise. Turn RCBO on, voltage comes out. Great. Press RCBO "test" button. Loud buzz from RCBO and bad day explode

So, CONTACTUM 2 pole RCBO's will self destruct if you feed the power IN to the BOTTOM.

What makes this worse, there were NO instructions supplied with it, NO clear marking to say which is the input and output side, and even the technical section on Contactum's website does NOT have any technical details for the 2 pole 2 module RCBO's, only for the single pole ones.

I've used several RCBO's and RCD's with input at the bottom without issue.

So a heads up for anyone else, CONTACTUM 2 pole RCBO's will self destruct in a puff of smoke if fed from the bottom.

I await a replacement in the post now, and that means a wasted 35 mile round trip because I couldn't finish the job. I will be feeding in to the top when I get the new one.

Oh and guess what, a quick google (after the event) found someone discussing the same fault with the same RCBO and bemoaning the lack of clear instruction from the manufacturer.

AVOID CONTACTUM, they have gone seriously down hill IMHO.

 

[Jono Pashley]

Ive heard that before with their DP RCBO's.