garage consumer unit query sort of

[TMC]

Hi all

I am converting an outside brick built store and covered area into a utility room

My plan is to run a 6mm twin and earth from a spare 30amp breaker to the room along with a 10mm earth cable

What I would like in there is a garage type consumer unit with rcd and

6+16+32 breakers

The 16 being for a future feed for garden shed using 2.5 swa

I can find reasonably cheap garage consumer units at all the usual places but cannot see one with 3 breakers along with the rcd main switch

I am considering spurring the shed off of the 32amp circuit with a 13 amp switched fuse spur which would remove the need for a 3rd breaker

What do the team recommend

Regards

[John Rumm]

Is this attached to the house, or some distance from it? (if remote, then T&E might not be the best choice)

Presumably you have a PME supply and are extending the equipotential zone to the outbuilding?

Not sure if you will find a ready populated CU with all the bits you want already in it, but three way CUs are available:

if you expect to need three ways, then I would always install at least one more to allow for future options. Plenty of brands do 4 way boxes.

(buy your own RCD for the above)

Don't cut down you options by fitting the "exact size" now - allow for some expansion.

[TMC]

Hi John

Yep just extending the existing bonding to the utility room.

Distance from incoming mains supply to room is 10 metres

I was coming t the same conclusion regarding the consumer unit but am trying to keep the overall costs down as there is a lot of work to do on the house and the garage units are only about 20ukp

I will cost an an unpopulated box and bits for a 4 way

Thanks for the help

Regards

[John Rumm]

If you started with something like:

would only need add £6 worth of MCBs after...

[TMC]

Hi John

Had come to a similar conclusion

As the utility room is essentially part of the house in that it is connected by a 6" thick concrete canopy and the area below is being enclosed to make a lobby area I am thinking of using a main switch consumer unit with mcbs and using an rcbo for the shed circuit as I would not want damp in the shed to knock out the freezer in the utility room

The contactum range looks better priced than most other brands

Regards

[robgraham]

I've dealt with three CU's for sheds with inexpensive buys off Ebay. One is a bit bigger than needed but who really care - it was cheap! Rob

[ARWadsworth]

It's going to cost more if you want a split load CU that allows you to use RCBOs on the non RCD side.

I believe that I have a Wylex 100A 30mA main switch knocking about in the back of my van if you want it.

[TMC]

Thanks for the offer however I have gone with the contactum unit

Love the videos by the way

Who needs TV with neighbours like yours

Regards

Tony

[ARWadsworth]

No worries. I was a bit too late with my offer (I had to go to work etc)

They are good fun.