fuse rating ?

[burtonsnow83 10+ year member]

I was wondering what exactly the fuse rating meant, does it indicate the current draw?? or anything similar

because the re 35-1 has a 2-40 amp fuses and another 2 60 amp fuses so i was wondering what the meant

Click to read more...

 

[Bavarian3 10+ year member]

i duno but when i blew out my fuse when i hooked up my jbl 1200.1 to 1 ohm and had to get a more powerful one. they only cost under 10 bucks for a pack of em.

 

[MikeofTulsa Moderator]

well the fuse rating are ~ the amount of amperage the amps might draw max....give or take a little.....

 

[EPanther99 10+ year member]

Originally posted by burtonsnow83 I was wondering what exactly the fuse rating meant, does it indicate the current draw?? or anything similar

 

because the re 35-1 has a 2-40 amp fuses and another 2 60 amp fuses so i was wondering what the meant

that is the max amp draw or there abouts and you would want to make your inline fuse at or under what those fuses add up to.

 

[burtonsnow83 10+ year member]

so with 2 (60) amp fuses I would need a 120 amp inline fuse?

 

[EPanther99 10+ year member]

Originally posted by burtonsnow83 so with 2 (60) amp fuses I would need a 120 amp inline fuse?

or sumthing around there but not higher then that...i personaly like to use something a little lower at first and if it blows then put one in a little higher....i would rather blow the inline fuse on the way to the amp then blow the fuses on the ap and risk melting it down...

 

[f150_on_32s 10+ year member]

do not put an in-line fuse that equals the sum of the fuses in your amp. It should always be a lower amperage fuse. For an amp with 2 60 amp fuses, i would go no higher than a 100 amp inline fuse. I mean think about it. 100 amps is alot of current draw for a single amp. thats close to the rated max of 4gauge wire. correct me if i'm wrong but i believe max for 8 gauge is 60A. and 4gauge is 120A. The reason for the fuse is protection, and one that is too high is offering zero protection for your amp.

 

[paikiah 5,000+ posts]

Originally posted by f150_on_32s do not put an in-line fuse that equals the sum of the fuses in your amp. It should always be a lower amperage fuse. For an amp with 2 60 amp fuses, i would go no higher than a 100 amp inline fuse. I mean think about it. 100 amps is alot of current draw for a single amp. thats close to the rated max of 4gauge wire. correct me if i'm wrong but i believe max for 8 gauge is 60A. and 4gauge is 120A. The reason for the fuse is protection, and one that is too high is offering zero protection for your amp.

I don't think you can just give a max current load a certain gauge wire can take, cause it would be pretty dependant on length, no? I read a few days ago, stated by n2driven that a 6" 8gauge would carry more current than a 10' 4gauge (the number was similar).

 

[f150_on_32s 10+ year member]

length does play a big part, but thats the accepted current figures.

 

[EPanther99 10+ year member]

Originally posted by f150_on_32s length does play a big part, but thats the accepted current figures.

if you put an in line fuse that is 20A lower then what your amps max current draw it will blow a quite often bc taking in to account the standard 15 - 17 feet that the power wire is long and if your amp is actually getting say 60 amps then the current draw on the wire will be significantly higher then that bc of the length it has to travel