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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Electrical Questions >> Spur Lighting https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1249857249 Message started by Trotty on Aug 9^th, 2009, 11:34pm

Title: Spur Lighting
Post by Trotty on Aug 9^th, 2009, 11:34pm

Hello

From a spur in the house, via a fused RCD – I have an armoured cable running to an outbuilding. A gland is installed on the cable in this outbuilding and the cable is, in turn, connected to a socket inside the outbuilding. Earthing is TN-S.

I would ideally like to install a two-gang switch to this set-up as follows:

Switch one to power 2 x 60w internal wall lights
Switch two to power a separate internal 60w light

I do understand that if I run these from the socket as a spur they will need a 3 amp fused spur but there doesn't seem to be such a thing as 2-way fused switch(?).

Would it be simplest to have the 2 lights on one fused switch and the other single light on another fused switch or can they come through one fused unit to a 2-gang switch?

Many thanks

Howard

Title: Re: Spur Lighting
Post by sparky415 on Aug 10^th, 2009, 5:58am

One fused unit to a 2-gang switch

Title: Re: Spur Lighting
Post by Lectrician on Aug 10^th, 2009, 6:27am

I would simply go for two switch fused spurs.

Us metal clad ones, and join them to your metal clad socket with either a couple galvanised conduit couplers and brass bushes, or some short lengths of 20mm conduit.

Title: Re: Spur Lighting
Post by Trotty on Aug 10^th, 2009, 3:24pm

Lectrician wrote on Aug 10^th, 2009, 6:27am:

I take that you are also recommending a method to run the cables between socket/fitting/switch here or have I misunderstood? I am able to run all the new cabling safely between joists and behind the plasterboarding - so probably don't need the conduit?

The single fused unit with 2-gang switch would be my preferred choice (only aesthetically) unless you think there's a safety issue to NOT do it this way? Is it OK to run them both through a 3 amp fused unit to the 2-gang switch?

Thanks to you both

H

Title: Re: Spur Lighting
Post by Lectrician on Aug 10^th, 2009, 4:29pm

It just sounded like a small garden shed to me, which is why I said surface in conduit.

To reason why you can't use an unswitched fused spur feeding a 2 gang switch.