Do I need a fuse on the big 3 alternator to positive?

[n3w_3ra]

I can't find a definite answer on this one. I did a search on the forum and not much popped up, when I watched a couple youtube videos a few people put the fuse on the wire, and most did not? Now I will be leaving the all the stock wire and just adding the extra wire. I already have the grounds done and have the wire cut to length and all I just need to know if I have to go pick up a 0g fuse holder.

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[vibe]

i have never seen or even heard of that. you will be just fine without it

 

[NASTY08IMPALA 5,000+ posts]

I can't find a definite answer on this one. I did a search on the forum and not much popped up, when I watched a couple youtube videos a few people put the fuse on the wire, and most did not? Now I will be leaving the all the stock wire and just adding the extra wire. I already have the grounds done and have the wire cut to length and all I just need to know if I have to go pick up a 0g fuse holder.

Alot of ppl dont fuse it ..i dont ..but its jist like any other power connection if it frays or shorts or comes loose bad things can happen

 

[ilikeradios 10+ year member]

I put mine in techflex and routed it where it is not likely to get nicked or cut.

 

[garychurch84 10+ year member]

I didn't fuse mine either

 

[argenis69 10+ year member]

I put a fuse on mine.

 

[bbeljefe]

If your regulator or PCM regulating circuit goes bad, as they often do, you run the risk of sending high voltage through your entire electrical system. Also, sending ~50 volts to a battery can cause fires or explosions.

If you don't want to spend $15.00 to protect your amplifiers that's fine. But please spend $15.00 so that your car doesn't catch fire and burn down the one next to it.

 

[Ahmed Johnson]

No fuse, I wrapped mine in electrical tape and flex tube and ran it where it was alone.

 

[Beatin' 10+ year member]

If your regulator or PCM regulating circuit goes bad, as they often do, you run the risk of sending high voltage through your entire electrical system. Also, sending ~50 volts to a battery can cause fires or explosions.
If you don't want to spend $15.00 to protect your amplifiers that's fine. But please spend $15.00 so that your car doesn't catch fire and burn down the one next to it.

I wasn't thinking about fusing up this particular big 3 wire, but now I definitely will.

 

[bbeljefe]

I wasn't thinking about fusing up this particular big 3 wire' date=' but now I definitely will.[/quote']
Thank You!

It really is a very important location for a fuse, as connecting two power supplies together can have disastrous effects.

 

[garychurch84 10+ year member]

If your regulator or PCM regulating circuit goes bad, as they often do, you run the risk of sending high voltage through your entire electrical system. Also, sending ~50 volts to a battery can cause fires or explosions.
If you don't want to spend $15.00 to protect your amplifiers that's fine. But please spend $15.00 so that your car doesn't catch fire and burn down the one next to it.

If that 50 volts draws less amps than the fuse rating.still screwed fused or not

 

[garychurch84 10+ year member]

Fusing it tho is a good thing

 

[bbeljefe]

If that 50 volts draws less amps than the fuse rating.still screwed fused or not

But that's an if that doesn't happen when the regulator goes out. The alternator sends as much current as it can produce through the circuit.

 

[SamIam71]

But that's an if that doesn't happen when the regulator goes out. The alternator sends as much current as it can produce through the circuit.

Current is drawn, not sent.

 

[bbeljefe]

Current is drawn, not sent.

Current flows through any circuit that has a low enough resistance or, in the case of an alternator and a battery, any circuit that has a lower voltage potential than that being supplied.