What Size Fuse For 100 Amp Alternator. Between your alternator and battery. keep it between 300a and the max output of your alternator. Normally you use one 2 auto gauge sizes smaller than the cable.
Alternator 100 Amp Fuse 1998 T22 Avensis Club Toyota toyotaownersclub.com
Like a 125 amp fuse for a 100 amp alternator. So for one. definately do not use a fuse with any higher than a 300a rating. I run a 150 amp alt and use a 125 amp fuse.
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I have a 200 amp alternator. and a 250 amp fuse. If you match the fuse size (amp rating) to the alts amp rating. then kiss your alt goodbye if it develops a problem.
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You can mount it right on the alternator! My 2/0 (59## strands) is supposed to hold max 400a so
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I would try to use a 125 amp fuse. as 4 awg is good for around 130 amps at the distance you require. The amp you are getting calls for a 300a fuse. and accepts 1/0 power and ground.
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See www.partsexpress.com for the fuse fuse holder. It uses a fuse link wire. does the same job.
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Simply put. if that 100 amp fuse didnt blow. your not passing 100 amps or more of current through that wire. Except for one post mounted blue sea mrbf that goes on the 1awg to the back of the truck.
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1998 5.0. fitech efi. holley in tank returnless pump You want to run a smaller fuse than the rated output of the alt.
If You Match The Fuse Size (Amp Rating) To The Alts Amp Rating. Then Kiss Your Alt Goodbye If It Develops A Problem.
See www.partsexpress.com for the fuse fuse holder. So i would go with a 300a fuse there. Its not like just because an alternator can make 100 amps at idle that it actually is.
If There Is No Fuse Then Literally Hundreds Of Amps Can Flow As With A Starter.
Match the fuse capacity to the alternator rating; Simply put. if that 100 amp fuse didnt blow. your not passing 100 amps or more of current through that wire. Normally you use one 2 auto gauge sizes smaller than the cable.
Your Fuse Size Near The Battery Should Be Optimized For The Wire Size To Prevent A Fire Then Another One Closer To The Amp (Or Built In If Applicable) To Protect The Amp Itself.
In one of my systems i had 2 amps. the sub amp had four 30amp fuses on it and the four channel had four 25amp fuses on it. To calculate the best fuse size. you must first figure out how much current your leds draw. Fill out our calculator at the top of the page and it will provide a recommended fuse size based on your inputs.
Heres A Parts List For The Wire Other Items.
A circuit breaker 20% higher than the max output of the alternator the most common sizes seem to be 100 amp or 150 amp from bussman. Calculate fuse size following nec guidelines. You need 2 fuses on that wire that runs between the front battery and rear battery.
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My 2/0 (59## strands) is supposed to hold max 400a so 1 fuse does nothing in protecting the wire. I have an 1100 watt inverter and an amp for two subs right now but plan to add a winch and lights.