What size wire and fuses?

[ashtrey1212 10+ year member]

I plan on running a second battery in my trunk pretty soon and I was wondering what size wire I should run to it. I have zero gauge right now as it is but should I go bigger? Also, I remember reading a thread where someone mentioned that if you run a second battery you need to put a second fuse on the power wire connecting the two batteries, one under hood and one in the trunk. What type of fuses would I need?

Click to read more...

 

[Pioneer~Saturn 5,000+ posts]

I plan on running a second battery in my trunk pretty soon and I was wondering what size wire I should run to it. I have zero gauge right now as it is but should I go bigger? Also, I remember reading a thread where someone mentioned that if you run a second battery you need to put a second fuse on the power wire connecting the two batteries, one under hood and one in the trunk. What type of fuses would I need?

I would definitely link them with 1/0 gauge and also, you will need TWO fuses (I would go ANL fuses and fuse holders..).

You will probably want to get two 1/0 gauge fuse holders and (2) 250-300 amp fuses...you will need to put the one upfront near the front battery like normal...but then you'll need to fuse on that same run near the rear battery's positive terminal as well..

This is incase that run of 1/0 grounds itself and if you dont have the rear one...the front one will blow but the short circuit will still be drawing off of your rear battery and all kinds of bad $hit happens //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif...

 

[ashtrey1212 10+ year member]

I would definitely link them with 1/0 gauge and also, you will need TWO fuses (I would go ANL fuses and fuse holders..).
You will probably want to get two 1/0 gauge fuse holders and (2) 250-300 amp fuses...you will need to put the one upfront near the front battery like normal...but then you'll need to fuse on that same run near the rear battery's positive terminal as well..

This is incase that run of 1/0 grounds itself and if you dont have the rear one...the front one will blow but the short circuit will still be drawing off of your rear battery and all kinds of bad $hit happens //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif...

ANL Fuses? Is that a brand or something?

 

[Pioneer~Saturn 5,000+ posts]

ANL Fuses? Is that a brand or something?

Nope, its a type...'google image' it //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[ashtrey1212 10+ year member]

Ok I did. Thats like the one I already have under my hood.

 

[kovemaster559 5,000+ posts]

i like to use circuit breakers for rear batts instead of fuses. its just a thought

 

[Pioneer~Saturn 5,000+ posts]

Ok I did. Thats like the one I already have under my hood.

Yea, that'd what you'll probably want...or like kove said a breaker

 

[dman4486 5,000+ posts]

ANL Fuses? Is that a brand or something?

sig'd...

 

[dman4486 5,000+ posts]

i like to use circuit breakers for rear batts instead of fuses. its just a thought

make sure the breaker is a "fast open" breaker

 

[James Bang 5,000+ posts]

 

[Pioneer~Saturn 5,000+ posts]

sig'd...

Ouch //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif, haha

 

[ashtrey1212 10+ year member]

sig'd...

Dirt:crap: I guess I'll be the laughing stock of ca.com for a while now eh? //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[dman4486 5,000+ posts]

Dirt:crap: I guess I'll be the laughing stock of ca.com for a while now eh? //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

nah...it will give you something to look back on and be like:crap:

 

[jrwalte 10+ year member]

sig'd...

It's Car Audio's Cretin of the day //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif