using higher fuse rating on 75A amp

[wirelessF 10+ year member]

I'm looking at this alpine amp to be used with a pioneer SPL sub. The fusing requirements for the amp is 75 amps, while I can only find fuses rated at 80 or 100 A. It is okay to use higher rated fuses?

Click to read more...

 

[blackbonnie 5,000+ posts]

yes. but you dont fuse to your amp specs. you fuse to the amps that your wire can pull. but either way you will be fine with an 80 or 100 amp fuse

 

[n2audio 5,000+ posts]

yes. but you dont fuse to your amp specs. you fuse to the amps that your wire can pull. but either way you will be fine with an 80 or 100 amp fuse

right - which is to say -- amp req's 75A, that's too much for 8 ga wire, so you should be using 4 ga wire. If you are, any fuse up to ~120A will work fine. 80 or 100 really doesn't make any difference.

 

[wirelessF 10+ year member]

Well the wiring is 0ga, so how much amps can the wire handle?

 

[funkyab 10+ year member]

you use 300amp fuse for 1/0

 

[blackbonnie 5,000+ posts]

x2

 

[XanderMoser 10+ year member]

Sorry if this is a dumb question, but you're getting a fuse for your power wire, right? Not for replacing the fuse in the amp itself?

 

[envengineer 10+ year member]

yes. but you dont fuse to your amp specs. you fuse to the amps that your wire can pull. but either way you will be fine with an 80 or 100 amp fuse

True, assuming the amp has on-board fuses (the Alpine should).

There are amps out there that have no on-board fuse, and the in-line fuse must be used to protect the amp. Zed Audio amps are a good example.

Just making sure nobody goes a fries a Zed .

 

[lrgnation 10+ year member]

True, assuming the amp has on-board fuses (the Alpine should).
There are amps out there that have no on-board fuse, and the in-line fuse must be used to protect the amp. Zed Audio amps are a good example.

Just making sure nobody goes a fries a Zed .

and the JL Audio's...

 

[wirelessF 10+ year member]

Sorry if this is a dumb question, but you're getting a fuse for your power wire, right? Not for replacing the fuse in the amp itself?

Just the fuse that goes between the battery and the amp.