Convoluted Spur

[JimBerryman]

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Hi

The garage (two internal lights, one external light and a socket) seem to run off of a internal socket with a wire running through the wall from the garage and plugging into said socket.

It was unplugged when we moved in, but suspect this was linked to leaking flashing potentially tripping it out. This is now fixed and dehumidifier has been happily running in the garage on the existing electrics.

I would like to tap into it for an additional pir led light (30w) to the front.

the existing system starts with wire coming through the wall to a junction box which has three wires out of it:
1. To a second junction box
2. One of the internal lights
3. The Single Socket

the second junction box runs to
1. Switches - one for internal lights and one for external
2. Internal light
3. External light

Is it reasonable just to tap into the first junction box for the new light? Or is this too much? I was considering adding a 13a switched fused spur for the new line, then thought should I add this to the whole ‘spur’ before the first junction?

The garage is likely to be redeveloped in the next year and so don’t want to replace the lot (unless it is considered especially unsafe).

I hope the above makes sense

thanks in advance for the help

Jim

 

[buzzlightyear]

IMO,i think you need to get a spark in and advise.

 

[Spoon]

Welcome to the forum mate.
Where goes the cable going to the garage connect to?
Does that circuit have RCD protection?
What size is the cable going to the garage and the cables inside the garage?

 

[JimBerryman]

Thanks

Wire going to the garage comes from in the house from a socket (it has a plug in the end so plugs in). The house circuit has a RCD protection.

Looks to be 2.5mm to first junction box, then 2.5mm to socket and 1.5 to lights.

Thanks

 

[buzzlightyear]

Wire going to the garage comes from in the house from a socket (it has a plug in the end so plugs in). The house circuit has a RCD protection.

Is therea 13 amp fuse down from the house.

 

[Spoon]

Is therea 13 amp fuse down from the house.

As above, I presume there is a 13A fuse in the plug for the cable going to the garage?

 

[littlespark]

Its got a 13A in the plugtop, @buzzlightyear so everything in the garage is through the plugtop, plug bottom and plug middle.

OP, you can tap off the first joint box if you like...

 

[JimBerryman]

Yep, just pulled it out to double check - 13A fuse in the plug

 

[JimBerryman]

As the ‘spur’ is ‘protected’ by the 13A plus I take it there’s no need for a switched fused spur?

does it sound reasonable tapping into the first junction - that would mean 4 cables coming out and one in - is this too many?

thanks, Jim

 

[Spoon]

As the ‘spur’ is ‘protected’ by the 13A plus I take it there’s no need for a switched fused spur?

does it sound reasonable tapping into the first junction - that would mean 4 cables coming out and one in - is this too many?

thanks, Jim

If the junction box can properly fit another cable, then there is no problems with 4 cables coming out.