On Wednesday, April 10, 2019 at 5:45:23 AM UTC-4, Rod Speed wrote:
"trader_4" wrote in message
...
On Wednesday, April 10, 2019 at 2:30:00 AM UTC-4, Rod Speed wrote:
"Hugh Byrne" wrote in message
...
Today the car wouldn't start at a friend's house who had no jumper
cables.
He had some electrical wire though.
We were just starting to jury rig something when his wife showed up
with
cables in her trunk.

If we did jury rig electrical wires, we were unsure of what size would
work.

How can we determine what size electrical wire would work to jump a
typical
sedan in an emergency?

There is no real way to do that

Sure there is moron,

We'll see, ****wit.

just apply Ohms Law and consult a wire gauge table.

Problem is that you need to know the current
involved to do that and need to know if the
reason why the car that wont start wont start.

Sizing it for 100 amps should work fine. If you don't like that,
just use my other method, look at the gauge size of existing jumper
cables. Even you could do that. And no, you don't need to know
why the car won't start, though that's certainly helpful. For
example, we wouldn't want a moron like you to waste time trying
to start a car with no gas or no engine.