Hello guys,
I have just finished making my set of car jumper cables using 300AMP
35mm square fine strand copper cables. These are orange in color and preety think. they are Orange Welding cables actually.I just like to know, how come the cable is only rated at 300amp when it's so think, 35mm?? That's equiv to 2AWG. I've seen thinner car jumper cables being sold with 400amp rating.
Ok my guess is that my cables can withstand 300amp sustained current whereelse those sold off shelves are rated for the peak current which it wouldn't last after a few seconds of cranking the car's engine?
So how much current can my cables actually carry across to jump a car? Since they are so think and powerful can they be used to jump start large diesel engines like a lorry?
Thanks.