Question about alternator fuse, and high output alternator

[evanspears1]

Hi, My question is, do I need a higher rated alt. fuse with a 135 amp alterstart alternator??? The factory fuse is rated at 80 amps... The install instructions with the alt. said replace the big 3 cables, and stuff like that, but no mention to the fuse. my old one was fried anyway, so I went to advance, and all they had was 80 amp fuses. I asked them about my dilemma but being the dubmasses they are they they didnt know even what I was talking about... I got the 80 amp fuse, just so I could get everything running and it works so far, but im afraid if I redline it anytime soon it will pop the fuse... so maybe its just one of those things your just supposed to know, but I missed haha
Thanks for the help,
Evan

 

[Defiant]

The alternator won't put out any more than the old one did, which is whatever the vehicle's sytem is drawing. You should be far safe with 80A.

 

[evanspears1]

Ok, so for right now, other than a few little do-dads that add up to nothing, everything is still at stock draw... So for at least a little while I will be safe, but what happens when I attach a Audiobahn A2300hct (1600x1 watts rms) and a Hollywood Sound Labs rhv-40s (85x4 watts rms)... I know that I will be pulling way more than 80 amps then, so would I need a bigger fuse then??? if so, should I get a bigger factory style fuse, or an inline fuse like that comes with amp wiring kits? Sorry for all the dumb questions
-Evan

 

[luv2rallye]

Use the inline fuse for special high current draw stuff (and only for that) and at just above (like 3-5 amps) the max current draw it will have.

 

[evanspears1]

I think your thinking im asking about a fuse for stuff after my battery...my question is what kind of fuse do I need to go in between the alternator and the battery to replace the factory 80 amp piece in the engine fuse box... do they make bigger fuses in that style, or will I have to go to an inline fuse holder between the alternator and battery???

 

[luv2rallye]

The 1g's have a 100A fuse available - I think it's for the Canadian models with the 90A alternator. The 2g NT has a 120A fuse there (it may be a different physical size than your 1g 80A however - you'll have to check).

 

[evanspears1]

ok, on top of my factory current draw, I will have a max draw of 160 amps (40Ax4 fuses) from the audiobahn amp, and a max draw of 50 amps from the hollywood amp, so in that case what should I do, because I know that it wont constantly be pulling that much, but even if I can get a 2g 120A fuse to work, I still dont think that will be enough... or will it?

 

[Defiant]

You won't be pulling all that at once, and those fuses are for protection of the equipment, not an indication of what they'll draw.
Stop worrying.

 

[evanspears1]

So will say the 2g 120A fuse be enough?

 

[Defiant]

Start with the 80A, and see if you have any trouble with it.
Make sure all your fusebox contacts are clean, and that all your ground wire mounting points and battery terminals are as well.

 

[evanspears1]

Alright guys, Ill do like you said start with the 80A and go from there, I really appreciate the help...