3phase cable, what gauge/size?

[mechman]

Try these people for price. They were the cheapest I could find a couple of months ago when I needed some 10mm for my garage. Delivery, etc. was spot-on.

https://swacable.net/swa-cable/

They also do the glands / cleats, etc.

I think you need to get someone to look at your installation - if it's a steel (metal) container, you might need to have an earth bonding wire too (so that would be a 5 core cable).

I agree as there's no chance of me having a go at it.

 

[brightspark]

2 ways to do it ,either turn it in to a tt circuit or if the supply has an earth point you can run a seperate earthwire paralell to the armoured cable but is it worth the hassle and cost of it

 

[sparkysy]

I would always TT a steel cabin if it's outside. Too much mass of metal there for PME and let's face it even if it looks like a TN-S at the service head it needs testing to verify it is and not PME somewhere in the system.

Edit:
At an occupational guess I'd be looking at at least a 16mm cable for that distance without calculating it properly!

 

[brightspark]

16mm at 120m distance 8 kw per phase 34.8amp

 

[Erie Fred]

Some times I wish I'd studied Klingon.

"Plasma conduits".....

 

[mechman]

16mm at 120m distance 8 kw per phase 34.8amp

Ta