Help for Submain needed please.

[dez0178]

Hi, I am planning to install a 2 WAY CU in my garage that will feed 1 lighting point and 1 double socket. I am planning to feed the CU 2 in the garage from my CU in the house, from a B20 MCB using SWA 2.5mm. I want to know if I can take the SWA form the CU through the external wall and run it along the wall externally to the garage CU 2 . Is this ok. Any advice or a better alternative would be greatly appreciated. Cheers Derry0178.

 

[trev]

( oh, and don't praise trev too much. he'll get big-headed. :44

Way too late for that Tel

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I've got delusions of adequacy

 

[dez0178]

if you are feeding SWA through a wall, drill at an appropriate angle so that the SWA comes out of the wall without you having to make a tight bend. hope you can see what i mean. ( oh, and don't praise trev too much. he'll get big-headed. :44

That's a good point, didn't think off that. Will do, I will drill through as you say, Nice one! Cheers Derry0178.

 

[trev]

Also, if drilling through a cavity put a thin drill bit all the way through both bits of brickwork then your bigger one inti the cavity from both sides. You'll reduce blowout to a minimum

 

[Flanders]

If you can ,Drill from outside in .You can make good the plaster on inside but a blown out brick on the out side will look messy.
How are you going to terminate The SWA into the CU ?

 

[dez0178]

If you can ,Drill from outside in .You can make good the plaster on inside but a blown out brick on the out side will look messy.
How are you going to terminate The SWA into the CU ?

I was going to terminate the same size (6mm) but in Twin and earth to the House CU as it is plastic, and run the twin and earth to a metal enclosure, and take the SWA from near, using a banjo and crimped CPC. Looking into what metal enclosure box to use, any ideas. Cheers Derry.

 

[Flanders]

You could use a 25mm metal conduit end box on the outside of the house (outlet facing down) make off the SWA into that with a water proof gland and then run the cable inner sleeving still on though the wall into the back of the CU you will have to run an earth lead to the conduit box though (USE 3 core swa)

 

[dez0178]

Nice one Flanders, See All these tricks of the trade, Fantastic. Cheers Dery0178

 

[dez0178]

Well Thanks to everyone, I am ready to get on with it, Cheers Again Derry0178.:drummer:

 

[not clever]

Great point "not clever" but you can't rcbo the house and put a RCD socket in garage as its against regs, can't have 2 30ma RCDs in series, plus you won't need rcbo in house as its swa.
like you said RCD socket in garage but instead of FCU use the 1G RCD module instead to control the lights with a 5A fuse installed.

Think you'll find it didn't say use rcbo and RCD sockets in series at all, I said .......rcbo and bog standard sockets.
Swa or not if standard sockets are used an rcbo or RCD will be required at the house.

 

[Amp David]

Derry is either newly qualified or almost there

Oh sorry, forgot some of us could read the minds of others!

Where does it say this anyway Trev?

 

[telectrix]

You could use a 25mm metal conduit end box on the outside of the house (outlet facing down) make off the SWA into that with a water proof gland and then run the cable inner sleeving still on though the wall into the back of the CU you will have to run an earth lead to the conduit box though (USE 3 core swa)

if i were to do it that way, i'd chuck a piece of pvc tube through the wall.