car battery fuse amp

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alscrx

Member - Posts: 39

Joined: March 30, 2005

Location: United States

Posted: August 15, 2008 at 8:34 PM / IP Logged

I am relocating my SEALED battery inside the car. I am trying to find out the correct way of choosing the fuse size for the positive terminal. I know i need to put an inline fuse about 6inches off the positive terminal but what amp fuse do i use safely?

i am an idiot

Platinum - Posts: 13,672

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 15, 2008 at 8:40 PM / IP Logged

What size wire are you running to the starter? What size wire are you running to the fusebox under the hood?

alscrx

Member - Posts: 39

Joined: March 30, 2005

Location: United States

Posted: August 15, 2008 at 10:50 PM / IP Logged

Well i purchased 4 gauge to run from the battery to the starter and fuse box. But i am reading i should use a 0 or 2 gauge.

So if i go with the 0 gauge from the battery to the distrubution block. Then run a 4 gauge to starter and a seperate 4 gauge to the fuse box, How do i fugure out the fuse size?

I was looking into a digital distribution block that displays amps and volts. It holds the ANL fuses which cost alot!

i am an idiot

Platinum - Posts: 13,672

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 15, 2008 at 10:58 PM / IP Logged

If you use 4 Ga. wire you need to fuse it at 150 amps.

Power & Ground Cable Specs

Cable Size

Wire Gauge Current Capacity

Amperage (amps)

1/0 350

2 225

4 150

8 100

10 60

12 40

14 25

16 15

alscrx

Member - Posts: 39

Joined: March 30, 2005

Location: United States

Posted: August 16, 2008 at 9:38 AM / IP Logged

Wow 150amps seems high, looks like alot of people ran 100amp ANL fuse.

What is that based on, just wire size and how many amps from a 12 volt battery or what? How did they figure those numbers out?

i am an idiot

Platinum - Posts: 13,672

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 16, 2008 at 7:42 PM / IP Logged

https://www.the12volt.com/info/recwirsz.asp

alscrx

Member - Posts: 39

Joined: March 30, 2005

Location: United States

Posted: August 22, 2008 at 9:08 PM / IP Logged

Also, i am using a fused mini ANL distribution block under the hood. I decided to run a 1/0 gauge as my main. Then distributing it to two 4 gauge wires. One for starter one for fuse box.

How many amp should i get the mini ANL in? Each 4 gauge has its own mini ANL. I have no idea whats the amperage for the starter wire!

KPierson

Platinum - Posts: 3,527

Joined: April 14, 2005

Location: Ohio, United States

Posted: August 22, 2008 at 9:24 PM / IP Logged

The chart lists the MAX fuse size you can use - if you arn't planning on pulling 150A from the battery there is no reason to use a fuse that big.

Kevin Pierson

alscrx

Member - Posts: 39

Joined: March 30, 2005

Location: United States

Posted: August 22, 2008 at 10:00 PM / IP Logged

Oh ok, well how do i figure out how many amps my starter is pulling so i can use the correct size fuses??

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car battery fuse amp

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