Wednesday, Jul 04, 2007 at 18:21
One more point Matt, you need to know what sort of currents you intend to carry in the cable you after and then do some calculations to see just how thick the cable should be to best serve your requirements.
Do not buy any cable just based on the amps marked on the cable.
If cable has amps marked on it, the current is the maximum current the manufacturer recommends but is usually useless for a circuit you are planning to use the cable in.
For example, some 8B&S ( 7.9mm2 ) cable is sold with a 100 amp marking. You could put 100 amps through this cable but if the cable was just 1 metre long and you tried to put 100 amps through it, with an alternator voltage of 14 volts at the supply end, your 100 amp load would be lucky to be getting 9 or 10 volts at the other end.
There’s another link bellow that will save you trying to do the calculations for working out what length and size of cable you will need to best meet your requirements.
Cheers
Cable Size Calculator
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