Cable To Garage

[New2Game]

I propose to install power in my garage. I will use SWA buried in ground half meter down. I will put in some type of ducting or conduit so that i can run other cables etc at later date if want to. Any suggestions on way to do this? Would a 90degree angle up from garage floor be nuisance when trying to pull in another cable? Should i leave draw tape in there?

 

[breezer]

2 x 45 s would be better, and yes, also run another pipe for telephone

 

[New2Game]

What size conduit would i need to fit 3 Core 4mm SWA in?

 

[RF Lighting]

The size of the duct depends on what size SWA you are planning to install. I used 4" soil pipe for the duct from my house to the garage, using 2no. 45° corners to get up through the garage floor. My supply is 3 core 16.0mm² SWA.

Definatly put in a good strong draw rope for future use. The standard is blue polypropelyne rope.

http://www.tlc-direct.co.uk/Products/DR11673.html

As breezer said have you thought what else you may want to have in the garage? I have a network cable for the burglar alarm, and a co-ax for the TV to my garage.

Also lay some warning tape just above the duct, and then again about half way up the trench

http://www.tlc-direct.co.uk/Main_Index/Necessities_Index/Electric_Cable_Below_Tape/index.html

 

[Spark123]

Why run SWA in conduit? You could run duct next to SWA as well for additions.

 

[New2Game]

Why 16mm2 SWA? 4mm2 Will be sufficient for a 40A Garage CU won't it?

 

[New2Game]

How deep will foundations of garage be? Just thinking of how deep i'llhave to dig to get under them thats all

 

[RF Lighting]

Why 16mm2 SWA? 4mm2 Will be sufficient for a 40A Garage CU won't it?

cos we had a lump of 16.0mm² left over on a job.

Also I have loads of heavy power stuff in the garage like my welders, compressor, theatre lighting dimmer supply, table saw, bench grinder, angle grinders, heater, chop saw, shed supply, 2 freezers, external lights, pillar drill, battery chargers etc.

Personally I would fit 6.0mm² for a 40A supply

 

[New2Game]

4mm From TLC states 42A so surley that'll be ok won't it? Its only for 2 Sockets, a light and secuirty light. What type of light fitting would you recomend? Are Batterns with standrad Bulbs ok in garage?

 

[RF Lighting]

What is the length of the run from the house to the garage?

My regs only rate 4.0mm² SWA at 38A when installed to reference method 1

How big is your garage?
I would think a non-corrosive flourescent fitting would be better than a batten holder

 

[New2Game]

Length of run is approx 8M under floor in house, then 3M under concrete outside. The SWA is XLPE thats why 42A -
http://www.tlc-direct.co.uk/Products/SW4slash3.html

Garage is approx 3M x 5M

 

[RF Lighting]

You never mentioned XLPE before

4.0mm² will be ok for this.

For the light I would fit one of these:

http://www.tlc-direct.co.uk/Products/TNC58.html

 

[New2Game]

How deep will the foundation be on garage though? As i'll need to dig deeper that them to get SWA in won't I?

 

[RF Lighting]

Depends on what sord of garage it is.

Mine is pre-cast concrete panels and just sits on a 6" concrete slab.

If you get your duct in before the footings are poured it shouldnt matter though.