SWA CABLE SIZING

[hoodie786]

hi all
i need to run power to my log cabin in my garden and wanted to make sure i am using the right size swa cable details are here

LOAD 4000 WATTS APPROX

LENGTH 70 METERS

ALL BURRIED UNDERGROUND

tlc websites suggest i use 6mm2 is that sufficent enough?

thanks

 

[PrenticeBoyofDerry]

Out of interest what equipment are you using in the shed?
6.00mm SWA will be okay for 4kW of power over 70M about 39A max load.

 

[hoodie786]

one heater and laptop and a light

 

[PrenticeBoyofDerry]

The cable rating is okay for that.
Just a shame you need to hide in the shed with the lappy!
Don't forget all the legal stuff and quality of info available on wiki
//www.diynot.com/wiki/electrics

 

[ban-all-sheds]

tlc websites suggest i use 6mm2 is that sufficent enough?

Unless you'll be really looking forward to the chance to dig a 70m trench again you might as well put in 10mm² or 16mm² - yes it's more than you need now, but things might change, and in the context of the overall cost of the job the extra for bigger cable is pretty small.