FYI.
GM
----- Original Message -----
From: Greg Monfort <wingracer@email.msn.com>
To: <healeys@Autox.Team.Net>
Sent: Wednesday, June 09, 1999 2:03 AM
Subject: Fw: Battery cable to starter
> It definitely is, and I've done it many times. Yes, it has more strands,
but
> this doesn't make it more resistive. Cables are sized by the cross
sectional
> area of each strand, so whether it's a solid piece of wire or 167 strands,
> both will have the same cross sectional area within a close tolerance.
>
> Copper wire has ~10.8 ohms resistance per mil-foot at 68 deg F(20deg C),
> aluminum wire has ~17.25 ohms.
>
> You can calculate voltage drop with the formula:
>
> CM = R * 2 * L * I
> ---------------
> VD
>
> Where:
>
> CM = wire size in circular mils
> VD = desired voltage drop
> L = length of wire in feet, one way
> I = current
> R = resistance per mil-foot
>
> Example:
>
> A copper cable is 10ft long one way and it needs to carry 500 CCA with a
2V
> drop:
>
> 10.8 * 2 * 10 * 500
> ----------------------- = 54,000CM or between #3 and #2 AWG
> 2
>
> A ~1V drop would require #2/0 AWG
>
> This of course assumes a proper termination at each end.
>
>
> GM
>
> ----- Original Message -----
>
> > I have been told that welding cable is a good replacement for the
> > battery cable from the trunk. Anyone out there, been there, done that?
> > It is a lot more flexible than the original so it must have a lot of
> > small strands. This makes me think it is more resistive. Barry Pate 1967
> > BJ8
> > --
> > GIF89aHH
>
|