Thread: Negative battery cable size?

The Negative battery cable utilises a 50-10 cable lug on the chassis end.
Basically....(Yes, for the pedantics, I realise that there is more to it than that....Ie: difference between nominal and cross sectional area...) that means that the cable is roughly 50mm2, the -10 signifies that the lug has a 10mm hole for bolting through.

When doing a dual battery install, I upgraded the cable size to 70mm2.
Your factory cable has a (I guess you could call it a....) Y junction lug on it with one peice attaching to the transfer case and the other end attaching to the chassis.

I made two cables for my fitment, one Negative to transfer case & one transfer case to chassis.

Photo attached below...

Also,
http://www.sengpielaudio.com/calcula...ss-section.htm

Mike.

Upgraded negative cable...
Transfer case end at top, chassis end at bottom of the photo.

Mike.

Edit.... Somehow my pic has turned on its side....

Complete negative battery cable.

Good work 90@
I was going to caution a guess at 35mm2, but having a 50-10 lug on the end is a pretty clear indication.
PS, how spiteful is that factory lug! The factory copper is stiff as too... makes for a real PITA to get the cable run sitting right.
With my dual battery install I had considered re-making the factory negative cable but have got it to a workable place at the moment, but still not 100% happy, so will re-do mine at some stage.
Got any more pics of the cable you made up in 70mm2 ?

Just making up some heavier winch cables now with the same cable that I used for the dual battery system.

Mike.

70mm2 fire rated cable,
I would have preferred to use the individually tinned stuff, but the stuff that I ordered hasn't been delivered yet, I need to go bush for a week or two for work and need a winch working and the old winch cables would get too hot....
So making them out of what I have....

When I get back from work, (and the other cable gets delivered) I'll redo the battery system and winch with the tinned 70mm2 cable.

Mike.

Thanks gents!

Originally Posted by Dopey

The Negative battery cable utilises a 50-10 cable lug on the chassis end.
Basically....(Yes, for the pedantics, I realise that there is more to it than that....Ie: difference between nominal and cross sectional area...) that means that the cable is roughly 50mm2, the -10 signifies that the lug has a 10mm hole for bolting through.

When doing a dual battery install, I upgraded the cable size to 70mm2.
Your factory cable has a (I guess you could call it a....) Y junction lug on it with one peice attaching to the transfer case and the other end attaching to the chassis.

I made two cables for my fitment, one Negative to transfer case & one transfer case to chassis.

Photo attached below...




Also,
Cross-sectional area to diameter conversion circle intersection cross section diameter electric cable conductor formula wire diameter and wiring and calculation cross section AGW American Wire Gauge thick area of a solid wire formula conductivity res

Mike.

I want to replace my battery negative cable as that silly cone type screw attaching it to the battery is impossible to get tight and I've had a few cases of not being able to start due to poor connection

I note that the negative battery cable has two attachments ? one to the chassis and one to the transfer case?.. why is this so ?? I note most generic battery cables I can get don't have that intermediate connection ?.. they just have the battery lug and the end connection

if I fitted one of these generic cables to the negative terminal and to the transfer case and left out the intermediate connection to the chassis what would I be missing and what would the result be .

thanks for any insights