FW: Fuse Amperage??? for a fuse between the battery and the car.

[Livolsi, Stephane]

I have to agree with Marc.  When your battery shorts, I think that all 400
or 600 or whatever amps available try to go through, which would definitely
blow a 175 amp fuse.  Whatever current goes through the starting circuit is
limited by the starting motor itself and that is well under 175 amps.

I think that you can almost weld sheet metal with the arc created by a
shorted battery .....(let's not ask how I know this, ok folks  ;)

.02

Stephane

> ----------
> From: 	Marc Swanson[SMTP:mswanson at sonitrol.net]
> Sent: 	July 30, 2002 10:11 AM
> To: 	Richard J Lebens
> Cc: 	quattro at audifans.com
> Subject: 	Re: Fuse Amperage??? for a fuse beween the battery and the
> car.
>
> > Are you asking about a fuze on the battery?  When you are starting your
> > car the battery is delivering all the power it has for as long as the
> > switch is on. The starting circuitry is a very low impedence, similar
> > in magnitude to your seat springs connected to ground.
>
> agreed that it is a high current draw, but not that high!
> Under full load of starting the 175 amp fuse won't blow, but.. say if
> your main battery feed line chafes against the body and shorts to
> ground.  That would start a fire without a fuse in place.  That would
> certainly be a significant enough draw to trip the 175 amp fuse.
>
>
> Later
>
>
>
> --
> ----------------------------------
> Marc Swanson, Software Engineer
> Sonitrol Communications Corp.
> Hartford, CT
>
> Email: mswanson at sonitrol.net
> Phone: (860) 616-7036
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