fuse and distribution block question

[gqjeff 10+ year member]

Ok my son runs 2 Jl amps a 300/4 and a 1000/1. The 300 has a recommended fuse rating of 30 and the 1000 has a 100amp rating. He blew a 100 ANL last night so I popped in an extra 150 we had. Its working fine.. My question is would you run a 100 or does it matter if you run it higher? Should you use the fuse rating that JL provides? Also the new dist block I bought to run 1/0 into has AGU fuses. They only go to 100amp and I am wondering if I use it will I have to replace fuses all the time or not? Just seems the ANL are so MUCH more beefier. I have looked at getting him a digital midi one also but since I have the AGU one I was wondering if I should keep it or send it back and get an ANL or MIDI type one that accepts larger fuses?

Peace

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[loopkiller 10+ year member]

Always fuse based on the wire you are protecting. If you are running 1/0 that is rated to 300a, use a 300a fuse. Never use anything other than ANL fuses for 1/0. If you are running 1/0 now, check the rating of the wire, but you can be pretty sure it is at least 250a.

 

[gqjeff 10+ year member]

Ok.. I am running 250amp ANL from the front to the rear battery and also from the alt to the ne batt for the big. I guess I will send the AGU back and get the midi digital one I was looking at for him.. OK so if running to a fused dist block should I run 1 150amp and 1 100amp or run 2 250's?

TY,. Jeff

 

[gqjeff 10+ year member]

Well hell it looks like the Midi fuses only go up to 175 amp.

 

[loopkiller 10+ year member]

No need for a distro if you have dual batteries. I would just run each amp directly off the rear battery. Use whatever size wire each amp accepts. JL says both amps accept 4 gauge wire. Here is an example:

 

[gqjeff 10+ year member]

Yea I went ahead and got the fused digital dis block as I do run 4 ga out from the rear batt so I did go with 100 midi for the 300/4 and 150 for the 1000/1 midi fuses.. I got the dist block so it lights up for him and shows amps and volts..

TY so much for your help.

Peace, Jeff