Garden Power Supply From Garage

Question

Hi, i want to run an armoured cable from my garage consumer unit (which is fed from the main house consumer unit) to a garden room that would also have a consumer unit fitted to run LED lighting and small 13A power, is this an acceptable approach or can you not link consumer units? Thanks

John · Accepted Answer

This will depend on a lot of factors the first being your main fuse is it a 60 or 100amp this may need to be changed depending what else the house is using etc next is the garage board what was that board installed for and what is it used to run and has it any spare ways to put a new circuit in and is it RCD or RCBO protected it really needs to be checked over before we can assess

Laine · Answer

Yeas you can do this it is fine 
Just need to put the correct fuse in to protect the cable that is feeding the garden room

Nathan · Answer

Hi you have to have a separate earth supply (outside earth rod) and would advise a separate fuse board fitting inside and local power and lighting from there would ideally need a 32amp supply from the main house with an armoured cable either buried or clipped direct. I could quote you if local, where about are you based?

Mark · Answer

Yes laying the correct size cable, either cleating or burning as per the regulation... Leave the connections to a qualified sparky

Carl · Answer

Yes, this can be run as a spur, are there any spare RCB (fuse) slots on your garage consumer unit?

Mark · Answer

Yes you can supply from the sub board. It does depend on the load you are going to put on the new consumer unit. The design of the circuit will also need to be checked depending on at supply you have, and what is in the shed and if there are any metal extraneous parts in the shed.
Ask an electrician to give a quote to carry out the works and certify the installation.

Seyit Soner · Answer

You can do. But it's a risky business. You must be careful.

Paul James · Answer

The armoured cable would have to be run as a sub circuit from the consumer unit in the garage with the appropriate fuse 

You must get a registered electrician to do this work with the local authorities notified

William · Answer

To use two sub consumer units apply something called 'discrimination' by reducing the size of the main switch current rating ie from 100A from main incoming consumer to 60A next consumer unit in garage and reduce cable size to say 4mm and next consumer unit in garden shed main switch to 40A with 2.5mm cable connecting between the two consumer units.

Russell · Answer

Thats the correct way to it,and making sure that the new CU is fed from a suitable rated breaker on the the non supported side of the RCD in the house CU

Garden Power Supply From Garage

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