Cable c.s.a

narnold · Posted: Mon Dec 18, 2006 5:33 pm Post Subject: Cable c.s.a

Hi there, just starting on the electrical course road!! Can anyone please explain how to work out the cable cross sectional area please

Cheers

Steve · Posted: Mon Dec 18, 2006 6:09 pm Post Subject:

Your tutor will know.

festa · Posted: Mon Dec 18, 2006 6:20 pm Post Subject:

Hello there

If your starting out at the moment i would recommend you buying some books to get used to certain parts of your course and one or two will illustrate tables of current carrying capacities and csa`s of conductors that should be used.
1)BS7671 (16th edition)
2)ON SITE GUIDE
3)GUIDANCE NOTE 3
4)ELECTRICIANS GUIDE TO THE BUILDING REGS
These were the four i bought and for me they are great to refer to.
I also bought most of Brian Scaddons books as i found them very easy to follow.
Good luck

Spark123 · Posted: Mon Dec 18, 2006 7:22 pm Post Subject:

To work out the CSA of a cable is the same as working out the CSA of a circle , PiR²
Festa, can you still get the electricians guide to the building regs? I had a look for it not so long back for a mate but couldn't find it for sale. (Lucky I already have my copy).

festa · Posted: Mon Dec 18, 2006 7:51 pm Post Subject:

Yes spark you can still get it .....
I got a friend one from a place called Technique Training
Try www.techniquetraining.co.uk

Just looked and they still do it £17.00 + p&p

fraser2801 · Posted: Wed Dec 05, 2007 8:14 pm Post Subject:

csa = pieR2

and

resistance = (17.2(micro) ohms (this is given resistivity for copper) x Length of cable) / cross sectional area