ceengland7(at)gmail.com
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 Posted: Thu Jun 19, 2014 12:49 pm Post subject: fuse link to replace fuse in low current applications? |
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On 6/19/2014 1:26 PM, Robert L. Nuckolls, III wrote:
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<nuckolls.bob(at)aeroelectric.com>
At 12:07 PM 6/19/2014, you wrote:
> I'm installing an 'alternative engine' using a fuel/ignition
> controller driving automotive style injectors & coil-near-plugs. My
> first draft for power distribution included individual fuses & B+
> lines to each coil pack and to the injectors, to avoid one coil or
> injector failure taking out multiple the coils or injectors.Â
>
> Given the rarity of coil/injector failures, it seems reasonable to
> eliminate the multiple joints (along with weight & wiring complexity)
> of multiple fuses, & just use soldered-in fuse links instead of
> filling a fuse block with fuses.
It's a juggling act for risk. Your assessment appears
sound. I think I'd use butt-spliced links and put the
wires under the legacy 'fire sleeve' but that's a
process detail. What size wires make up your feeders
to the loads?
Bob . . .
Design size *could* be as small as 22ga (actually, 20ga would be
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adequate for a single feed to power 4 ignition coils). The injectors get
22ga to each injector.
I'd like to feed each coil & injector with 22ga, but realize that the
4-step-smaller criteria for the link is tough to achieve (26ga link).
In the 'Book', it mentions a 4-6" length for the fuse link. Any reason
not to go a bit shorter, with the link and an inch or two of the heavier
wire under the 'fire sleeve'?
Thanks,
Charlie
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