options for workshop supply

[A032701]

just wondering what people would think would be the best way of doing this.

i have got to provide a supply up to a workshop in a garden (about 80 mtrs from the house). it will run underground all the way and then in the subfloor of the house that is currently being worked on all the way to the db.

 

[Squid]

What will the cable be supplying in the workshop, a single light and a double socket or a lathe and other heavy duty equipment?

 

[A032701]

The consumer is a fan of landrovers and that will be his garage for it. so there will be possibility of welders, grinders, lathes etc
i was thinking of putting the supply on 40amp mcb

 

[Dustydazzler]

80 metres is a substantial distance , will require a proper calculation imo

You could be looking at a 40a c curve mcb to prevent tripping

 

[Yozza19]

Still approx 25mm cable

 

[Charlie_]

Tns?
I would ask for a duct to be laid from the house to the garage with a rope inside.
Pull through a 3 core 16mm swa and also a cat6 cable..

 

[A032701]

thanks everyone-
the current supply is tns
i was thinking of laying a duct then pulling through some double insulated 16mm through and a 10mm through for earth.

 

[ruston]

Due to the location heating may be a fair consideration of the loading , but I can just see a nice pot bellied stove.

 

[Charlie_]

Definitely go for swa. Make sure you get his full load requirements though, 25mm may be required

 

[A032701]

ok. will ask him in more detail as to what he will be using.

 

[Charlie_]

Is the 80m from house to garage or from cu to garage?

 

[A032701]

cu to garage.

 

[The Ghost]

I get 10.08 vd on 16mm² and 6.3 vd on 25mm they can carry 78A and 99A respectively assuming 0.7 m. depth and so on. Personally SWA for me.

 

[ruston]

I would use SWA too.

 

[Toneyz]

It seems like he is going to be using this garage on a semi-professional bases/serious hobby/past time. Full due consideration needed especially if he has other enthusiast mates helping also using equipment plus the possibility of some heating/water heater. How big is this workshop?