Specification of cable to carry power over about 600 metres

[SparkyChick]

Thanks! Expensive is probably the word... though I'm having a hard time getting a price for a conductor area (did I get that right?) of 35 sqmm.

Yes, but it as @Rockingit points out in post #4 my figures are based on an anticipated maximum load of 13A. You should definitely take a look at his posts because if your can be fairly precise with your design currents and they are much smaller, the cable can be significantly smaller.

 

[Timbo]

35mm² 3 core swa £13.50/m from

35mm 3 Core SWA Armoured Cable

35mm 3 Core Armoured Cable available for some of the best prices online with fast, free delivery on orders over £100 excluding VAT.

armouredcable.net

 

[brianmoooore]

The 13A sockets are what puts the cost up. What are they for?

 

[Rockingit]

35mm² 3 core swa £13.50/m from

35mm 3 Core SWA Armoured Cable

35mm 3 Core Armoured Cable available for some of the best prices online with fast, free delivery on orders over £100 excluding VAT.

armouredcable.net

35mm the armoured would be fine for CPC so only need 2 core. That should reduce the cost of a 600m run by at least a pint.

 

[Rockingit]

In fact, thinking about it some more, if it’s going in a duct anyway then I’d be doing the maths for concentric service cable and a TT…

And thinking even more outside the box, for that ££££’s of cable two small LV-MV MV-LV transformers might even be cost effective with a much reduced conductor size cable. Outside the scope of BS7671 but doesn’t make it a bad engineering solution.

 

[SJD]

There was a similar post a few months ago that might be of interest, which also happened to be about 600m:

What type and size of cable for a long underground run > on Free Electrical Advice - Electricians Forums

Find What type and size of cable for a long underground run Advice and Help. How-to What type and size of cable for a long underground run in the UK Electrical Forum advice boards on Electricians Forums. What type and size of cable for a long underground run on ElectriciansForums.net Electrical...

www.electriciansforums.net

 

[MattGSW]

The 13A sockets are what puts the cost up. What are they for?

Thanks - security camera, recharge points for a robot mower, plug for laptop and a wifi point at most. I get the feeling I'm out of my depth on this one and not even asking the right questions. Sounds like I should dig the trench and leave everything electrical to a pro!