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Battery relocated to the trunk - fuse amp

Old 02-05-2007, 10:53 PM
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Battery relocated to the trunk - fuse amp

my battery has been relocated to the trunk by the previous owner (required for engine bay space)

I want to be on the safe side and put a fuse inline, what amperage is needed?

alternator is 90amp

anymore info required, let me know

thanks
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Old 02-05-2007, 11:06 PM
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E\IR... Volts\Amps*Resistance in Ohms. take the voltage of the battery (assuming 12v) and go buy yourself a cheap multimeter at wal-mart and measure the resistance. 12\whatever the resistance is = needed amps. check yourself easily before buying fuses, and take the amps * the resistance and make sure it comes out to 12v or whatever volts you're running.

Hope I could be of some help,
Scypher
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Old 02-06-2007, 12:00 AM
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Im not sure I understand exactly what you are asking, but I think you want a fuse between the alternator and the battery?

If that is the case, you want a fuse that is rated for at least the output of the alternator, which is 90 amps.
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Old 02-06-2007, 12:25 AM
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well i want to put the fuse, about 12" from the battery....it is my understanding that if i were to be hit on the side where the wire is running to the engine bay then it could pinch/cut the wire and short out causing a fire

if that were to happen (accident) a fire is the last thing i want to worry about so hence the desire for an inline fuse


scypher23: where would i be checking the resistance across?
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Old 02-06-2007, 06:45 AM
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(GrizZz here, wife's PC)

If you're putting the fuse on the line between the battery and everything else, you're going to need a lot more than a 90amp fuse. A starter will draw 100 amps, on a good day. Add cold weather or high compression engines or whatever, and you're gonna need at least a 150amp fuse.

I'd stick a 200 in.
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Old 02-06-2007, 09:58 AM
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Originally Posted by GrizZzled
(GrizZz here, wife's PC)

If you're putting the fuse on the line between the battery and everything else, you're going to need a lot more than a 90amp fuse. A starter will draw 100 amps, on a good day. Add cold weather or high compression engines or whatever, and you're gonna need at least a 150amp fuse.

I'd stick a 200 in.
yes that's what i;ve heard before and was planing on about 150-200 Amp


anyone seen any good ones? would a breaker be a good idea?
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Old 02-06-2007, 10:53 AM
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Any ANL fuse holder is fine. You could even toss a 300 in it, you're really only fusing the battery from discharging into the frame.

Circuit breakers can fail, fuses don't, so that settles that IMO.
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Old 02-06-2007, 11:01 AM
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Originally Posted by Newb
Any ANL fuse holder is fine. You could even toss a 300 in it, you're really only fusing the battery from discharging into the frame.

Circuit breakers can fail, fuses don't, so that settles that IMO.
good point, thanks
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Old 02-06-2007, 04:14 PM
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and a breaker reacts slower then a fuse will.
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Old 02-06-2007, 05:36 PM
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i'm not exactly sure lol i'm still fairly new but i have a little experience. A 200amp fuse would be good enough on a regular car with room to spare. so you could go with that... i know that my way works but i'm still unsure of how to effieciantly measure the resistance. 200amps'll do ya good though. maybe a little over 150 if money becomes an issue
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