New Power in Garage

[theLoadedMonkey]

I was thinking of installing the following electrics in my garage. I have done lots of research but can someone else confirm that this is all ok:



1. 2.5mm cable from consumer unit in house (16A fuse and RCD) - already installed.
2. Switchfuse unit or will a normal switch do?
3. All 2.5mm2 cable except for lighting.
4. Two junction boxes.
5. 3A fuse and switch for lighting (two 58W fluorescent lights and 150W security light).
6. Double power sockets.
7. All lighting cable is 1.5mm2.
8. Security light.
9. Switch junction.
10. Light switch.
11. Two 58W fluorescent lights.[img][/img][img][/img]

[rebuke]

That all looks fine, just remember new CU circuits are notifiable under Part P.

Also, how do you plan on testing the installation once complete?

[flameport]

Nothing wrong with that, but you don't need half of the items.

The junction boxes are not needed - connections can be made in the switch box, FCU and the back of the sockets.
You don't need the switchfuse, since there is already a 16A MCB on the circuit.
1mm cable for the lighting.

Revised picture:

[davelx]

rebuke wrote:

That all looks fine, just remember new CU circuits are notifiable under Part P. Also, how do you plan on testing the installation once complete?

See item (1) above - so he's adding to existing

flameport wrote:

You don't need the switchfuse, since there is already a 16A MCB on the circuit. 1mm cable for the lighting.

I'd rather see a local isolation switch for garage though. A 20A DP would do as the circuit is already protected at 16A as you noted.

[Spark123]

Is the garage a separate building? Are there any extraneous conductive parts in the garage?

[theLoadedMonkey]

Thanks for all of your quick replies.

I definitely plan to test the installation once complete.

There was previously a similar circuit in the garage but due to roof leaks (now fixed) and old age, I decided that I ought to replace the existing electrics as the old one looked degraded/dodgy/corroded.

The garage is a separate building next to the house (2 metres). There are no conductive pipes or any other extraneous conductive parts that I am aware of. I will research this a bit more to be sure.