Garage fuse board

[J_N30]

DONT ASK QUESTIONS ON A DIY FORUM BECAUSE THE USUAL SUSPECTS WILL BE THERE READY TO HAVE A GO.

 

[PrenticeBoyofDerry]

How many circuits do you wish to run of the second CU?

 

[J_N30]

DONT ASK QUESTIONS ON A DIY FORUM BECAUSE THE USUAL SUSPECTS WILL BE THERE READY TO HAVE A GO.

 

[flameport]

My detached garage electricity supply runs off of my house fuse board

What exactly is in the 'house fuse board' and how is the garage supply connected to it? (Pictures are better than descriptions)

The answers will determine what is needed in the garage.

 

[PrenticeBoyofDerry]

Presuming 4. What I'm not too sure about are the different trips switches.

Oh no don't presume or assume anything round these parts
What existing circuits have you in the garage?
and what flameport asked?

 

[J_N30]

Thanks for your replies. I can't get pictures tonight but the house board has a trip labled garage and the garage has its own old fashioned fuse wire board. Only 2 circuits on it, 1 light 1 socket

 

[PrenticeBoyofDerry]

Well you can still keep to one light one socket circuit, use a garage CU could well need RCD protection, depending on the set up.
Install outside lights on lighting circuit, install a two pole isolator for outside light and same with outside socket on socket circuit, a two pole isolator in case of any problem with moisture and RCD trips.
But more info tomorrow please and better advice can be offered once more is known!

 

[J_N30]

DONT ASK QUESTIONS ON A DIY FORUM BECAUSE THE USUAL SUSPECTS WILL BE THERE READY TO HAVE A GO.

 

[PrenticeBoyofDerry]

What type of loads do you intend to use in garage?
6A for lights
16,20 or 32A for sockets

I want the outside socket on its own switch do I can't turn it off then not in use.

not sure what you mean! You can have it on the garage socket circuit and have it on an internal isolator to power off.

 

[Electrifying]

Basically I'm unsure which MCBs I need for lighting and socket rings. I'm gin to get a 4 or even 6 way consumer unit and just blank the spares. I want the outside socket on its own switch do I can't turn it off then not in use.

Any suggestions on what amp MCBs I need?

Someones going to say it eventually - so I might as well

This work is notifiable to your local Building Control.

You either notify them BEFORE you commence work, and pay the fee.......or you can't DIY, you'll have to employ a registered spark.

Judging by your questions, you're also going to have to do an awful lot of research if you're doing it yourself.

BAS has a nice list of bedtime reading for you, if that's your choice.

 

[J_N30]

You mean run it off a fused spur, yeah could do that just thought it would look better of the CU.

As for the sockets there will be 3 doubles and 1 outside.

Again, thanks for your reply.

 

[Taylortwocities]

What do you want to run in the garage? Heater, welder, engine hoist, lathe, washing machine/tumble dryer???????????
and
what size cable is provided to the garage, feeding the garage fuseboard?

 

[PrenticeBoyofDerry]

A radial circuit on a 20A MCB using 2.5mm T&E would do
But you can go for 32A RFC on 2.5mm T&E or 32A Radial on 4.00mm T&E
Bigger is better as it will cover you for any extra loads in the future.
But 20A is enough providing your not using equipment with high inrush currents.
Still need the extra info about supply side of things.

 

[PrenticeBoyofDerry]

Someones going to say it eventually - so I might as well
This work is notifiable to your local Building Control.

Cheeky bugger have you not read schedule 4?
Bugger all is notifiable today

 

[J_N30]

The garage feed is thick but unsure in exact size, I'll repost pics tomorrow.

So as it stands. 6amp MCB for lights. 20 amp for sockets which will only run battery chargers for bike/drill or intermittent power tools. That amp for outside socket used for lawn mower/radio? Also, I'm going to run all new cable in 2.5 twin and earth.