Power and Circuit Breaker/fuse ?s

MG2000XJ

NAXJA Forum User
Hey guys, Im working on a stereo install in my new xj. I have about everything I need except for the power/ground cables and circuit breaker/fuses.

Im a little confused when it comes to amps but I might have figured out what I need. Just want to double check on a couple things.

I plan on running 4awg as the main cable which will have a circuit breaker near the battery then a 1 input/2 output double fused distribution block.

This is the distribution block Im talking about,
http://www.woofersetc.com/index.cfm?fuseaction=product.display&product_id=6313

This is where Im at now and Im trying to figure out what amp circuit breaker I need.

I have done some reading and come up with this from Crutchfield's site,

"say you have three amplifiers, two with fuse ratings of 20 amps each and one with a fuse rating of 25 amps. In this case, you can safely go with either a 60 or 70 amp fuse".

One of my amps has 2x20a fuses and the other has 2x25a fuses. Added together that makes 90a. Does this mean I need a 90a circuit breaker (most likely buying a 100a)?
 
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