Connecting to a garage and installing external socket.

[StringJunky]

If you take a spur off the ring main to a suitable external socket on an outside wall of the house, can you spur off that to put a socket in a nearby garage? What would  be a UK-compliant arrangement under current regs if that isn’t? The goal is to have a weatherproof socket on the outside wall and power to the garage, which is a few metres away. Expected power demands will be a tumble dryer, freezer on constantly, and whatever power tools are being used.

Edited January 30, 2021 by StringJunky

[studiot]

 

32 minutes ago, StringJunky said:

If you take a spur off the ring main to a suitable external socket on an outside wall of the house, can you spur off that to put a socket in a nearby garage? What would  be a UK-compliant arrangement under current regs if that isn’t? The goal is to have a weatherproof socket on the outside wall and power to the garage, which is a few metres away. Expected power demands will be a tumble dryer, freezer on constantly, and whatever power tools are being used.

Sorry not directly no.

You can have more than one spur off a ring main but only to one outlet (remember that can be a double)
You cannot extend the spur to another socket.

But there are  some ways round this as in the hasty attachment.

[StringJunky]

Thanks.  It is for a friend who is replacing his garage and figuring out his wiring options. Would he need an RCD in the garage or would the house one be sufficient, to comply with regs?

Edited January 30, 2021 by StringJunky

[studiot]

8 minutes ago, StringJunky said:

Thanks.  It is for a friend who is replacing his garage and figuring out his wiring options. Would he need an RCD in the garage or would the house one be sufficient, to comply with regs?

Now is the need for more information.

Most properties have their meters/distribution box('fusebox') in or around the garage if they have one.
It would certainly be better (and safer) if your friend could run new wiring from there.

Is he proposing to get a board certification of alteration for this ?

Sadly beaurocracy is steadily increasing these days, without any corresponding increase in safety

[StringJunky]

12 minutes ago, studiot said:

Now is the need for more information.

Most properties have their meters/distribution box('fusebox') in or around the garage if they have one.
It would certainly be better (and safer) if your friend could run new wiring from there.

Is he proposing to get a board certification of alteration for this ?

Sadly beaurocracy is steadily increasing these days, without any corresponding increase in safety

He was in the building/utilities trades as a ground worker. It's likely that he will do it but get it inspected and signed off by an electrician.

Edited January 30, 2021 by StringJunky

[studiot]

A further thought, he should consider adding an electric car charging point.
That would add to the value of the property and he may be able to get a grant for it (about £500 I believe).

That would definitely have to come off the main dist board as it is nearly equivalent to two ring mains by itself.

[studiot]

Yet another thought.

I was thinking about the usual british house/garage layout with the garage either integral with the house (under a common roof) or adjacent to the house with a common wall.
If the garage is actually a separated outbuilding then additional requirements apply, not least an extra isolation switch and the means of routing the supply cable
The garage wiring cannot then be part of the house wiring directly.

So it would be advisable to plan for the electrical work before the building work is done.