Fuse for alt to battery power wire

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J B M

Member - Posts: 7

Joined: March 13, 2003

Location: United States

Posted: April 21, 2003 at 10:21 PM / IP Logged

I just heard someone say to make sure to fuse the power wire from alternator to battery. Is that necessary and what size fuse should you use if the alt is a 200+ amp alt...?

Team Atomic

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Big Purds

Silver - Posts: 574

Joined: November 25, 2002

Location: Canada

Posted: April 22, 2003 at 1:40 AM / IP Logged

do not fuse that line...

there is no need for it...

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Wantofok

Copper - Posts: 74

Joined: January 07, 2003

Location: United States

Posted: April 22, 2003 at 2:46 AM / IP Logged

I'm thinking he prob. meant the battery wire to amp or whichever accessory you have next inline.

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copcarguy

Copper - Posts: 122

Joined: February 12, 2003

Location: Pennsylvania, United States

Posted: April 22, 2003 at 4:53 AM / IP Logged

Never heard of anyone fusing that line. Even in the high amperage draw vehicles we build. Fuse everything downstream of the battery or ignition though.

R Jackson

Owner/Installer

TRM Emergency Vehicles

Information is advice only and should be confirmed with OEM or quality test equipment.

Boyertown, Pennsylvania

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jgold47

Copper - Posts: 69

Joined: April 21, 2003

Location: United States

Posted: April 22, 2003 at 9:42 AM / IP Logged

besides your car will probably already have a fuse for that line, mabyee one for "batt" that might be equivlent to the old alternator output (ie in my acura i have a 90 amp alternator and a 100 amp fuse) if you increase the alternator, you might want to find that fuse and make sure its ok to handle the increased output (ie if I went to a 135amp alternator I would need to replace that fuse with a 140 or so amp fuse to protetct the battery......just look for the right fuse, depending on your car its probably under the hood or somewhere like that and it would say battery or alternator and should roughly corespond to amperage output of the alternator.....

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Big Purds

Silver - Posts: 574

Joined: November 25, 2002

Location: Canada

Posted: April 22, 2003 at 4:45 PM / IP Logged

I have NEVER, lemme repeat that in BOLD, NEVER seen a car with a fuse inline between the battery and the alternator...that line should not be fused...

can anyone tell me why the hell you would fuse that line???

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IronCy

Copper - Posts: 93

Joined: February 16, 2003

Posted: April 22, 2003 at 8:46 PM / IP Logged

Im with Big Purds on that, no need to fuse b/t the alternator and the battery.

-Cy

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Fuse for alt to battery power wire

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