Armoured Cable Size

[Barnman]

Hello

What size armoured cable will I need to run about 150m and what would the maximum load it could take be. I will be using an electrician but I am just looking at the options and pricing the work up.

Thanks

Barnman

 

[EFLImpudence]

What size armoured cable will I need to run about 150m

Depends on what load you want.

and what would the maximum load it could take be.

Depends on the size of the cable.

Seriously, determine the load you want, then select the cable which can handle it at that distance.

 

[PrenticeBoyofDerry]

The question is too vague to answer.
You must elaborate on the intended demand required of the cable.

 

[Echo the husky]

You size the cable on the load you need to draw, not the other way around!

Edit: well too slow.

 

[Barnman]

I understand - so lets assume 10KW. The cable will be buried in the ground.

 

[EFLImpudence]

I make that 25mm²

 

[Barnman]

OK - works out expensive which is why I wanted to check this. What about 5KW?

 

[EFLImpudence]

Half that - but that will mean 16mm² (no 12.5) - but then you can have 6.3kW, 27A.

Before anyone says this is way over the volt-drop limit for lighting, does it matter?

 

[RF Lighting]

It might do.

 

[ban-all-sheds]

What size armoured cable will I need to run about 150m

http://www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html <- Specify 2-core cable and PVC, even if that is not what you are using or it will make invalid assumptions.

 

[ban-all-sheds]

OK - works out expensive which is why I wanted to check this. What about 5KW?

What about choosing the cable size on the basis of the load it has to carry, not its price?

 

[Barnman]

That would be nice but as it is a stable with a couple of storage rooms etc I will live with the limitations depending on the cost. It will need lighting, maybe a kettle, maybe a heater but I think 6.3KW will be more than enough. If I ran 10mm cable, this would save about £200 but what load would this take? Any lower I imagine I will be restricted to lights only.

 

[Taylortwocities]

I still get 16mm² At 6.3kw (30A).
Will post calcs shortly.

 

[Taylortwocities]

 

[Barnman]

Thanks that's fantastic