Battery fuse keeps blowing (100A)

[gt4dude]

if at all I would use something like a 200 wafer fuse, definitely not a circuit breaker those are dodgy - they can randomly shut off while you're driving, losing power mid corner or on the motorway can be dangerous.

I just use a 2 gauge audio cable wrapped in that corrugated plastic shit, I have this mounted to my battery box but am not using it.

[Vertigo]

I totally agree, the point of having a fuse directly on the positive terminal is to prevent fires in case of a short of the positive cable due to the relocation. This does however need to be large enough to cope with the starter, as Ive discovered.

So ideal would be...

[matt dunn]

I would never fit a fuse in the main line,

the risk of getting stuck somewhere at the wrong time when the fuse blows,
is 1000 x more likely than a short if you use decent double insulated cable and run it properly.

[Vertigo]

if that were to happen and you didnt care, you could just bypass the fuse anyway tho, surely. in fact, all i would require is a bolt and nut.

[matt dunn]

if that were to happen and you didnt care, you could just bypass the fuse anyway tho, surely. in fact, all i would require is a bolt and nut.

Except you can guarantee when it blows it will be dark,
and raining,
and cold,
and you will be in the middle of nowhere, lol.

Personal preference, I have enough faith in my work routing the cable that it will not short.

My race car has no fuse or master switch or anything to disconnct the battery, apart from taking the lid off the battery box and pulling off a terminal.

[Bling]

My race car has no fuse or master switch or anything to disconnct the battery, apart from taking the lid off the battery box and pulling off a terminal.

This strikes me as rather odd tbh. Surely in a race car you'd want to be able to easily disconnect the battery if anything goes wrong?

[sergei]

Electrical fire is the worst kind - it does not need oxygen.
Even if you route the wire safe, all it takes one hit that crushes the panels not in your favour. Where is the safe place anyway, if everything bends?
I would rather be stranded in my race car than burned to death.

[jaypines]

^^^well the same can be said of almost all the cars (no fuse on starter wire) on the road today... no matter where the main wire is routed.

[Lloyd]

My race car has no fuse or master switch or anything to disconnct the battery, apart from taking the lid off the battery box and pulling off a terminal.

This strikes me as rather odd tbh. Surely in a race car you'd want to be able to easily disconnect the battery if anything goes wrong?

I was under the impression there was a requirement for an isolator? Maybe that was just an assumption from every other car I've played with.



As far as the being stranded thing goes, that was the point of having a circuit breaker rather than a fuse system. The pic I linked was obviously a cheap one, but there are plenty of decent ones available and easy to pop or reset as required.

[allencr]

I just wanna know how it went 2 months without a problem, then suddenly started blowing, except from drawing more current?
Bad/loose connection and/or failing terminal?
Starter dying?

[Vertigo]

im guessing the battery drained a bit, because when i went to turn it over, it was very hesitant. so trying to crank for a while blew it.