Fusing alternator pos. to battery pos.

[mokedaddy 5,000+ posts]

first off, i dont have my h/o alt fused. but if one were to do so, where would you put the fuse? closer to the battery or closer to the alt?
technically you would need two fuses then, just like fusing between batteries. a fuse leaving the alt, and a fuse right next to the battery. because if the wire were to get stripped/frayed/what have you, you still have power on both ends (battery and alt still putting out juice) so either way shits still going to catch on fire where ever its frayed and is touching metal.

Its a much shorter run so not exactly the same thing.

But its not an end of the world thing if you have good connections and properly mounted equipment.

 

[jco1385 5,000+ posts]

first off, i dont have my h/o alt fused. but if one were to do so, where would you put the fuse? closer to the battery or closer to the alt?
technically you would need two fuses then, just like fusing between batteries. a fuse leaving the alt, and a fuse right next to the battery. because if the wire were to get stripped/frayed/what have you, you still have power on both ends (battery and alt still putting out juice) so either way shits still going to catch on fire where ever its frayed and is touching metal.

this here is my philosophy

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

it's gonna be hot on both sides of the fuse anyways.

 

[MkKin420 10+ year member]

first off, i dont have my h/o alt fused. but if one were to do so, where would you put the fuse? closer to the battery or closer to the alt?
technically you would need two fuses then, just like fusing between batteries. a fuse leaving the alt, and a fuse right next to the battery. because if the wire were to get stripped/frayed/what have you, you still have power on both ends (battery and alt still putting out juice) so either way shits still going to catch on fire where ever its frayed and is touching metal.

Thats a good point. YOu could 2 fuses but it might be a real pita to fit depending on your alt location.

 

[01 S 10 10+ year member]

heres a little diagram i just made

the purple/pink line represents a cut/fray/fk up in the wire causing a short

btw, teh square thang is the battery, and teh round thang is the alt for the slower people

 

[Skip01 5,000+ posts]

I never did in any of my cars. Just added 1/0 run to front batt

I mean I guess if ur wire runs somewhere over the engine, mine was either on front of engine tucked away or along firewall.

As long as ya use good wire and do it right, you shouldn't ever have a problem without a fuse

 

[PSturmer 10+ year member]

I never did in any of my cars. Just added 1/0 run to front batt
I mean I guess if ur wire runs somewhere over the engine, mine was either on front of engine tucked away or along firewall.

As long as ya use good wire and do it right, you shouldn't ever have a problem without a fuse

x2

fuses=safety=less db's....i'll take my db's

 

[loopkiller 10+ year member]

heres a little diagram i just made

the purple/pink line represents a cut/fray/fk up in the wire causing a short

btw, teh square thang is the battery, and teh round thang is the alt for the slower people

Why do your alts have nipples?

To the OP, I would use a fuse if I were you. At worst you wasted the $20. At best you have one more layer of protection. IMO I would place it closer to the battery. I am not 100% on this, but I think an alt might have dead short protection built in.

 

[01 S 10 10+ year member]

Why do your alts have nipples?
To the OP, I would use a fuse if I were you. At worst you wasted the $20. At best you have one more layer of protection. IMO I would place it closer to the battery. I am not 100% on this, but I think an alt might have dead short protection built in.

cause they're hot like that...

and i was thinking the same thing about the alts, but i dont know for sure. if it did, then 1 fuse closer to the battery would be ok. if not, 2 fuses would be necessary for full protection imo

 

[cj407]

i say that if you are running a wire from your alt to your battery you should make sure the wire is free from anything that is gonna fk up the wire in any way shape or form. but thats just me i like to run my wire properly....so many people run their runs of 0 ga from front to back with no fuse...so why would that short of a wire need a fuse.

 

[jco1385 5,000+ posts]

i say that if you are running a wire from your alt to your battery you should make sure the wire is free from anything that is gonna fk up the wire in any way shape or form. but thats just me i like to run my wire properly....so many people run their runs of 0 ga from front to back with no fuse...so why would that short of a wire need a fuse.

now this is a bad idea

 

[goingdef 10+ year member]

If you take your dmm and test w/fuse versus a straight run you will see that fuse cost you in voltage big, it has a rather high ohm load to it so my setup has no fuse from the alt to the battery, but I do use one on the run from battery to the amp and always monitor the voltage with a digital volt meter.

 

[cj407]

running battery to battery i've found that its not required (nor absolutely necessary) if you run your wire carefully you shouldnt need it....but then again thats me(and many others who run more than 2 runs of each back to their batteries)

 

[PSturmer 10+ year member]

now this is a bad idea

welcome to db drag

 

[TNTR70 10+ year member]

just how much voltage is affected by fuses...i've never heard this before

 

[wokeupquick 10+ year member]

i was under the impression the fuse should be closer to the battery