Blown408

iTrader: (4)

How many guys have put a fuse in line when they relocated the battery to the trunk. What fuse is being used?

Nine Ball

iTrader: (38)

You really should put a fuse on that line. You'll have to go to a stereo shop to find a big fuse and a fuse holder that can handle the load though. Place it as close to the battery as possible.

DOUBT IT

iTrader: (13)

I've got one big 200 amp by the battery in the back.

Bitemark46

I'd put one in the line going to the + side of the battery and one in the line going to the alternator (that is if you have a cut off switch). -Mark

Blown408

iTrader: (4)

Well, I am going to install a cut off switch, so would I need two 200-250 amp fuses?

Bitemark46

Yes. One to protect the junction box and the other to protect the alternator. Here is a diagram that shows where to put the fuses. Don't worry about the motor. -Mark

http://www.revxtreme.com/forums/atta...6&d=1146194335

76LS1BIRD

iTrader: (35)

I used a 200 A class T fuse on the neg. cable. Dale

skipperbisket

iTrader: (4)

i've heard that it is better to fuse the neg. side rather than the pos. side, any validity to this?

Blown408

iTrader: (4)

Anyone?

76LS1BIRD

iTrader: (35)

If its on neg. cable its not -HOT- all the time
Just keep it near the battery.
Dale

lafnlt1

iTrader: (4)

explain to me how that would work with the fuse on the negative side. Conventional theory is that positve flow to negative. Actual flow is the opposite, negative to positive. I just don't that fuse on the negative side protecting anything. If the negative cable touches metal, it won't do anything. You want the positive cable to be protected from and chassis ground so you would need the fuse on the positive cable. I have never seen a fuse on any ground circuit in 5 years of wiring race cars.

76LS1BIRD

iTrader: (35)

I dont think the fuse cares which way the current is going.if you draw more than the fuse is rated it will blow and stop the flow of current. if you pull your negative cable off of the battery, your car wont start.

Dale This is the fuse block i made for my 2 cars

It also has a cover (not shown).

Poik

If you have the fuse on the negative side only, then yes it will blow if the positive cable grounds out. But after it blows, if the car is running, the alternator is still grounded, and will start welding whichever spot is grounding on the positive cable. Think of it this way, if you start your car and then disconnect the battery ground, it will still be running, right?

So either put a fuse on the negative cable, as well as one going to the alternator, or, put one fuse connecting the + terminal of the battery to both the line going to the kill switch as well as the line going to the alternator, so as to make a Y.

Steve Burger

iTrader: (33)

What size fuse do I need? Seems that the draw of the starter and or charge of the alternator would govern this.