Fuses or circuit breakers and how many?


ROCNROLL

CarAudio.com Newbie
Sep 30, 2019
7
0
CHARLESTON
I'm gonna be running 2 runs 0awg with a secondary battery in the back. Amps are RF 2500bd (subs) and RF1000ab (mids and highs). What size and how many fuses will I need or should I just do circuit breakers instead?
 

danielbea122

CarAudio.com Well Known
Jul 29, 2019
360
44
Tampa
I'm gonna be running 2 runs 0awg with a secondary battery in the back. Amps are RF 2500bd (subs) and RF1000ab (mids and highs). What size and how many fuses will I need or should I just do circuit breakers instead?
I'm gonna be running 2 runs 0awg with a secondary battery in the back. Amps are RF 2500bd (subs) and RF1000ab (mids and highs). What size and how many fuses will I need or should I just do circuit breakers instead?
How many amps does your alternator produce?

Don't want fuses too much higher than your alternator can produce because they won't blow if too high

My alternator produces 100 amps so I'm using 150amp fuse which might be a little too high honestly
 

danielbea122

CarAudio.com Well Known
Jul 29, 2019
360
44
Tampa
Going to need 4. One for under the hood. One before the positive terminal on your rear battery. One in between each amp and the positive terminal on the rear battery
 

Popwarhomie

CarAudio.com Elite VIP
5,000+ posts
10+ year member
Jan 22, 2010
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Fuse for the wire amperage rating. Breakers are really nice. I've had them before.
 

ROCNROLL

CarAudio.com Newbie
Sep 30, 2019
7
0
CHARLESTON
  • Thread Starter Thread Starter
  • #8
Could I use breakers for the entire setup or do I need to have fuses being that serve the same purpose?
 

Popwarhomie

CarAudio.com Elite VIP
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Jan 22, 2010
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You can use just breakers. I had a 250 amp on my alternator power wire and a 300 on 1/0 running to the amp.
 

CodyDaGoat

Member
Nov 26, 2016
71
5
OR
300 amp fuses. You are going to need 4 total for the runs from the battery to the second battery. Fuses must be within 18" of the battery so you need one fuse on each end of each run between the 2 batteries
 

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