armoured cabling karen

[karen1965]

Hi, i am using armoured cabling from fuse box in house to a workshop at end of garden. 40 meters away. a garage consumer fuse box unit will be used. This will supply wall plug sockets and lighting. Out door plug sockets will also be put outside the building to run a pond that is about 30 meters back towards the house. Should I use 4mm armoured cabling from house to workshop? Also do Ineed to use 4mm armoured cabling from outdoor plug sockets to pond. Or can I use.1.5 armoured cabling. Thanks for any help anyone can give.

 

[HappyHippyDad]

Just doing some quick calculations the Voltage drop will probably be too great for the lights, assuming 40m run of 4mm SWA and then perhaps 5m of 1.5mm for the 2 lights (assuming both are 100W).. (and assuming 16A max demand for sockets)

For the sake of a bit extra I may well be choosing either 6mm or 10mm SWA depending on being there and having the correct figures to hand to work out my calculations (rather than my very approx guess work here).

Your electrician(s) must surely know this and be able to work out the voltage drop so you have a perfect right to ask them to write out their calculations and then you could perhaps just by accident pop them on here for us to see :smile5:

 

[Guest77]

I read the OP differently, if you read it again it seems the OP is doing the work, I posted a like to post 13, quite simply because I agree with it.

 

[Guest77]

Thank you Mike. We saw this thread straight away and let it run in the General section/domestic due to a customer asking for advice on an electrician etc etc etc.

Great advice above, we need to know the full story. A 40m run in 1.5mm or 4mm sounds like penny pinching to me, just buy 10mm SWA and cover for any further add on's in the years to come. A lot more information is required before any member can give a true answer, hope the OP gets back to us with some more? OR the Electrician joins up and can answer a few questions? I hope it is the latter.



Thread continues.................

Thank you Paul for your kind reply mate.