d-nice88 Posted March 16, 2022 Report Share Posted March 16, 2022 I wanted to know what size fuse is needed for an ampere 5k with dual inputs. Is it a 500 amp fuse in each run or 250 each ? Link to comment Share on other sites More sharing options...
Dafaseles Posted March 16, 2022 Report Share Posted March 16, 2022 500 total. So, if it's 2 power inputs, 250 each 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
d-nice88 Posted March 17, 2022 Author Report Share Posted March 17, 2022 Ok so the same concept would be if you had 2 positive runs from alt to batt you would use 2 200 amp fuses for a 370 mechman elite alt ? Link to comment Share on other sites More sharing options...
Dafaseles Posted March 17, 2022 Report Share Posted March 17, 2022 From the alternator to the battery, I would personally just fuse to the wire for both. The fuses are to protect the wire from overheating and burning. So if you're using some good 1/0 OFC wire, that's usually rated for 350 amps. So I would use 2 350 amp fuses. Is your battery under the hood? 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
d-nice88 Posted March 17, 2022 Author Report Share Posted March 17, 2022 Yea. Got a 95 gmc sierra. Got an xspower s3400 under the hood and a Northstar 220 in the back. Double runs from front to back. Back batt is grounded to the frame. I drilled some holes and bolted it to the frame. Sanded down to bare metal of course. Using sky high ofc Link to comment Share on other sites More sharing options...
Dafaseles Posted March 17, 2022 Report Share Posted March 17, 2022 So, it is always safest to use fuse... Back when I had a battery under the hood, I didn't fuse from the alternator to the battery because, I had 2 runs on a 370, and after I mounted the fuse block for the alternator, and the other for the battery side, I was only protecting maybe a foot of wire. So I just monitored it and checked it often, making sure it wasn't going to fail. I'm not telling you that's what you should do. It is 100% always safest to fuse as close to the alternator, and as close to the battery as possible to protect the cable in between the fuses. 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
BassMunky Posted March 17, 2022 Report Share Posted March 17, 2022 Yes more better Shakin not Stirred....my buildhttp://www.stevemead...ngle-cab-build/412 CVX And put a sealed enclosure in your trunk cut a hole in your deck and call it ported Link to comment Share on other sites More sharing options...
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