Date:         Mon, 7 Aug 2017 22:38:56 -0700
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: Fuse Size: Aux battery to fuse block
Comments: To: David Beierl <dbeierl@attglobal.net>
In-Reply-To:  <CAMOH8L+erajUTri=1+Mnk6k7eODy4gCfbCYdqtFq2ssYBEx3ew@mail.gmail.com>
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Thank you David.

The wire from battery to fuse block will remain fused but I'll change
it to a larger gauge and possibly reconfigure things, again.

I was recalling, vaguely, details in general about fuses and that they
actually have some head room before they fail. But then I am curious
why my fog lights came with a 15 Amp fuse; at 110 Watts (pair),
technically, they should be drawing 8 Amps if I'm not mistaken.

Neil.

On 8/7/17, David Beierl <dbeierl@attglobal.net> wrote:

> Bosch Automotive Handbook says half a volt total drop on supply side
> acceptable for most 12V automotive circuits, assuming ground through
> chassis.
>
> Littelfuse specifies their ATO fuses to carry 110% rated load for minimum
> 100 hours, to blow at 135% in maximum 600 seconds (minimum 3/4 second), at
> 160% in maximum 50 seconds, at 200% in maximum 5 seconds.  At 600% in
> maximum 100 or 150 (35 and 40A) millisecs.
>
> I think VAG were wrongheadedly old-fashioned in leaving unfused wires all
> about.  Judging by the '09 Passat I just looked at, they've caught up to
> the Japanese and the rest of the world in fusing everything that comes off
> the battery barring the starter cable.
>
> Yrs,
> d
>
>



--
Neil n

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