Is a fuse(s) necessary with big 3?

[mgcauctions09 10+ year member]

Is a fuse or multiple fuses needed with big 3? Between alt and battery?

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[Apollo220 10+ year member]

Is a fuse or multiple fuses needed with big 3? Between alt and battery?

with any high power amp i would always suggest a fuse of 150 or more

 

[schackel 10+ year member]

not needed but i blown battery is not fun at all. just do it

 

[skmfkr 5,000+ posts]

no its not. the stock one isnt fused

 

[Apollo220 10+ year member]

but in other word its needed unless you want to damage your stuff!!!

 

[Apollo220 10+ year member]

in one hand you can have a $3 blown fuse in another depending on a battery you get it could be a blown $200 battery . Me personally i would rather have a $3 fuse to replace them my whole battery

 

[mgcauctions09 10+ year member]

So I could just carefully route the cables and cover them with insulated electrical tape and wire loom and would be good.

 

[BlackMaxima 10+ year member]

correct me if im wrong, but if you have a stock alt you dont need a fuse

 

[94'BLKBRD 10+ year member]

Where do you add the fuse when doing the Big 3?

 

[tc3k101 5,000+ posts]

mine is zip tied horribly to the brace. just put it 1/2 way betweet the batt and alt. and yes it is needed.

 

[Apollo220 10+ year member]

well id rather have a fuse to replace then a battery //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Tone415 10+ year member]

Can someone explain why a fuse is needed. Because just saying it could kill your batts isn't really saying to much about why? It would make sense to me that if you hve a stock alt you would not need a fuse between the batt and alt jus becauuse the simple fact that my battery never died with the stock wiring!

 

[Buck 5,000+ posts]

No big 3 I've seen has been fused. The factory big 3 isn't fused.

 

[eutechnyx 10+ year member]

I wouldnt worry about fusing it if its 100% safe from grounding.Make sure your wire that connected to the alternator is not touching the alternator casing and if u have to,put a washer or two to take the wire furthur from the casing *just incase*

 

[SocialStealth]

The argument is that if the fuse blows, your alternator will see the battery as empty, and will attempt to charge it. This will melt your remaining wire//catch it on fire and overwork/kill your alt.

If you do not have a fuse, and there is a short and the connection is maintained, the battery will explode and cover everything with intensely hot acid and release various deadly gasses. And your wire will eventually melt/catch fire and your alternator most likely die.

Of course, what are the chances that your alt//bat will short circuit? if it does, and your still driving, you'll probably notice a huge dim and your battery will be worked until it dies.

a fuse simply at the bat+ will save your battery in the case of a short, but the remaining wire to the alt will catch fire.

A fuse at the alt + will save your bat and prevent the wire from catching fire.

it is a misconception to always fuse at the battery.

you always fuse at the SOURCE. which is MOST often the battery.

But in the alt+ to bat+ connection, the source of power is the alternator.