Electrical Fuses in Series? - Kawasaki Versys Forum
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post #1 of 3 (permalink) Old 03-10-2009, 02:55 PM Thread Starter
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Electrical Fuses in Series?

I plan on adding these electrical accesories to my Versys 1) Louder horns, 2) Driving lights, 3) Heated Grips with heat-troller, 4) heated jacket and pant liners with dual heat-troller.

Since I use the space under the seat for my Kawasaki U-Lock, I am planning to run a heavy guage wire (or wires?) from the battery to the under dashboard to an added fuse block, then to the accessories (controlled by relays triggered by a circuit that only comes on with the ignition on).

So my question is - Do I also need to put an additional fuse at or near the battery connection under the seat? That is to say, in series with the new fuse block under the dashboard? Or would that be over doing it? Does it make sense to wire fuses in series? Such as a 30 A at the battery, and several 10 or 15 A fuses in the new fuse block under the dashboard?
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post #2 of 3 (permalink) Old 03-10-2009, 02:58 PM
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That's exactly what I did. I put an in-line 30A fuse on the hot lead from the battery to the fuse block. All the installations I looked at had that in-line fuse.
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post #3 of 3 (permalink) Old 03-10-2009, 04:03 PM
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It's not a bad idea. In that configuration, it protects your battery if the heavy gauge supply wire shorts, although that is unlikely. If anything after the fuse block shorts, the lower amp fuse on the affected circuit(s) would blow instead.

Without that in-line fuse, if the supply wire's insulation is compromised, your battery will discharge (regardless whether or not the bike's ignition is on) and it could possibly overheat, leak and/or explode.

Small price for some extra protection, in my opinion.
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