Basically it's just a matter of adding up all the potential concurrent loads
on the downstream side of the fuse panel (current draw for each motor,
etc.). Once you have the total amperage required, a DC chart which
undoubtedly will be provided by someone else on the list, will provide your
answer. I'd guess 6 or 8 ga. stranded will do the job. Since you wouldn't
expect each fused circuit to run at the maximum rating of each circuit's
fuse, you don't have to make the feed wire large enough to handle the sum of
all the fuses, although that would be a very conservative way to look at it.
Benn
----- Original Message -----
From: "Dick J" <lsr_man@yahoo.com>
To: "lsr list autox" <land-speed@autox.team.net>
Sent: Saturday, April 12, 2008 7:29 AM
Subject: [Land-speed] Electrical Wiring in Race Car
> Does anybody know of a website that has a reference chart on wire sizes
> needed to wire a car. Maybe a street rod site or something. I'm
> re-wiring my race car and need some help. I'm not too concerned with wire
> sizes to each device, as most of them had pigtails and I figure I can just
> use the same size or next size larger. I even have instructions left for
> some items. I'm concerned with what size lead I need going to the master
> fuse panel. I need to supply a monster fuel pump, three cooling fans, the
> ignition, electric water pump, etc. Originally, I took all of the
> individual leads directly off of a master disconnect switch, so they were
> supplied directly from a battery cable. Now, I'm going to go from the
> master switch to a fuse panel, and then to individual toggles. What size
> wire needs to supply that fuse panel?
> thanks
> DickJ
> In east Texas
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