Starter motor cable to battery upgrade

[caduceus]

As I'm in the process of replacing the starter motor, I thought I'd replace the big red cable from the battery to the starter, and the smaller red cable from the starter to the big fuse. Some of the fine strands at the ends are snapping and not looking too clever.

What is the largest/optimum size cable I should buy? Can you go too thick, or will it just carry the amps it needs however thick the core cable is?

Cheers
Cad

[caduceus]

jhfozzy said:

Marian said:

It says on the link that it's not to be used on starter motors

Average current of a starter motor is about 300A+, that cable is rated at 70A. Nuff said.

So that cable is 21mm multi strand and its not good enough? What should I be looking at then? 30mm multi strand, or something like 25mm 8 strand (thicker strands)?

[caduceus]

Thanks for the replies so far gents.
The meter tails look pretty substantial. I'm tempted to go with them.
That multi strand stuff doesn't seem to weather that well, and individual strands snap at the ends causing a gradual drop in current over time.

I might try and contact an electrical engineering company for some advice on what would be optimal for this application.

[caduceus]

Thanks for that Beanz.
I've just phoned my local motor factors and they have some commercial cable more than 10mm thick. So I'm going to have a look at that first before ordering something online.

[caduceus]

Thanks Mike A great help as always.
That looks like the stuff I'm after.