Power wire fuse sizes help please

[Xjeff 10+ year member]

So I was looking at my anl fuses the other day and reliezed the one from my battery is only a 100a and then th ones my distro block were 50a's I know I need to replace at lease the one to my sub amp when I get my sa-12 but I figured I should also get a new one for my battery too. How would I figure out what size to use? My amps fuse rating are the fallowing. Sub amp 140 (2x 70a) and my miss high amp is a single 40a so 180a total, but I don't use my mid highs to the fulliest I have the gains set to about 1/16 and only using 2/4 channels so I think the 50a fuse is good there. If anyone can tell me a good way to figure it out or suggest a fuse size that would be great. I don't hav a local audio store and nowhere close to me sells fuses so I don't want to pop them.

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[butterMilk 10+ year member]

Need to know what size the wire is to help ya. 4g...0g??

 

[butterMilk 10+ year member]

Wire Gauge Recommended

Maximum Fuse Size

00 awg 400 amps

0 awg 325 amps

1 awg 250 amps

2 awg 200 amps

4 awg 125 amps

6 awg 80 amps

8 awg 50 amps

10 awg 30 amps

12 awg 20 amps

14 awg 15 amps

16 awg 7.5 amps

 

[Sub Bass Woofrz 10+ year member]

Wire Gauge RecommendedMaximum Fuse Size

00 awg 400 amps

0 awg 325 amps

1 awg 250 amps

2 awg 200 amps

4 awg 125 amps

6 awg 80 amps

8 awg 50 amps

10 awg 30 amps

12 awg 20 amps

14 awg 15 amps

16 awg 7.5 amps

wtf is this good for?? this just shows the maximum capability of the wire...

 

[av83 10+ year member]

wtf is this good for?? this just shows the maximum capability of the wire...

Seriously? You fuse for the capability of the wire. If its an eight gauge wire, you put a fifty amp fuse. My 1/0 is fused for 300 amps. ...this is so if there is ever a short, the fuse will blow before the wire or battery melts down. The only time you take amplifier power draw into account its when there is no onboard fusing on the amp, and you put the correct fuse on the power wire a couple inches off of the terminal.

 

[av83 10+ year member]

Also, you can fuse the wire for at or below its rating, but never over what the wire its rated for. Always check the manufacturers specs for the wire you are using, since some wires are more capable than others of the same gauge. This can be due to size and/or the material the wire is composed of.

 

[Xjeff 10+ year member]

Ok yeah I forgot to put the wire size in, 0gauge from batt to distro block then 4g to amps

 

[audiobaun 5,000+ posts]

Recommended Power and Ground Cable Sizes & Speaker Wire Size and Length

BookMark this page..it has alot of excellent information on the site for you..Kinda Wished that they would Sticky this for info..Hope this helps out:santa:

 

[butterMilk 10+ year member]

Also, you can fuse the wire for at or below its rating, but never over what the wire its rated for. Always check the manufacturers specs for the wire you are using, since some wires are more capable than others of the same gauge. This can be due to size and/or the material the wire is composed of.

Yes thank you. CCA usually uses a smaller fuse.

I copy/pasted that info from bcae1.com