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Wiring, Electrical & Installation
fuse blew, why?
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<blockquote data-quote="M@nJo" data-source="post: 837310" data-attributes="member: 559973"><p>i was attempting the big-3 upgrade and my positive batt to postitive alt didnt work out well. the anl fuse i used (100amps) blew and caused my battery fuse in the fuse box to blow as well with it. heres some basic info:</p><p></p><p>-my stereo amp is a 40amp fuse and it is 500rms</p><p></p><p>-i used 4awg power wire to amp from batt</p><p></p><p>-my big-3 wires are also 4awg</p><p></p><p>-i used an ANL type fuse which was rated 100amps</p><p></p><p>as soon as it happened, i was stuck with the car not starting as the battery fuse was blown. so i ran down to a local kragen and bought a replacement for the fusebox fuse for the battery. which was a 80amp rated fuse (its those cube style kinds with 2 ends that have holes for bolts to hold them down)</p><p></p><p>so my stereo amp uses a 40amp fuse, my battery fuse from the fuse box is a 80amp, and im using 4awg everywhere... should i try downgrading to a 80amp ANL fuse instead of 100? or should i be going higher?</p><p></p><p>(another '?': would doing the neg to chassis AND engine to chassis help my electrical system alone without the alt to batt?... any benefit?)</p></blockquote><p></p>
[QUOTE="M@nJo, post: 837310, member: 559973"] i was attempting the big-3 upgrade and my positive batt to postitive alt didnt work out well. the anl fuse i used (100amps) blew and caused my battery fuse in the fuse box to blow as well with it. heres some basic info: -my stereo amp is a 40amp fuse and it is 500rms -i used 4awg power wire to amp from batt -my big-3 wires are also 4awg -i used an ANL type fuse which was rated 100amps as soon as it happened, i was stuck with the car not starting as the battery fuse was blown. so i ran down to a local kragen and bought a replacement for the fusebox fuse for the battery. which was a 80amp rated fuse (its those cube style kinds with 2 ends that have holes for bolts to hold them down) so my stereo amp uses a 40amp fuse, my battery fuse from the fuse box is a 80amp, and im using 4awg everywhere... should i try downgrading to a 80amp ANL fuse instead of 100? or should i be going higher? (another '?': would doing the neg to chassis AND engine to chassis help my electrical system alone without the alt to batt?... any benefit?) [/QUOTE]
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fuse blew, why?
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