can I do 130a amps with 90a alt?

[tmcilroy 10+ year member]

I have a Jeep Grand Cherokee and the stock alternator is 90A. I have 2 amps, one has a 50A fuse, the other has an 80A fuse. I will be running 1/0 wire then 4 gauge to each amp. I will also be doing the big 3 upgrade, but will I run into any problems?

Also what fuse sizes should I use? I was thinking a 130 at the battery, then in the distribution box a 50 and 80 respectively?

Thanks

Click to read more...

 

[jj4475 10+ year member]

u be fine

 

[tapout 5,000+ posts]

What are the amps?

 

[tmcilroy 10+ year member]

By the way, my 80A fused amp is class D, the other is just a regular A/B I think

 

[jj4475 10+ year member]

i would use bigger than 130a for the battery fuse and fuse from alt pos to battery pos so u dont have to upgrade later

 

[tmcilroy 10+ year member]

The amps are:

MTX blue thunder 1502 rated 75x2 @ 4ohms - 2x25a fuses

Phoenix Gold Octane 8.0:1 rated 600x1 @ 2ohms - 2x40a fuses

 

[tmcilroy 10+ year member]

What size fuse should I use between the battery and alt? And how much bigger than 130 should I go for the battery fuse?