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<blockquote data-quote="theCybe" data-source="post: 1582115" data-attributes="member: 558105">^ That may protect the wire, but not the amp. Your logic serves only to determine how the wire should be fused to protect it thermally, and it&#039;s based on the length and AWG.A 250amp fuse is way too big. Maximum current draw for an eD 9.1 is 130 amps, which should happen almost never. Use an 80 to 100 amp fuse. 2 AWG is plenty fat for a run inside the car.If you&#039;ll be using more amplifiers, you may need to up the fuse, but honestly, it&#039;s doubtful. A 100 amp fuse doesn&#039;t blow at 100 amps, you must exceed the rating by some percentage to break the circuit.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifSideline, I run an 80 amp fuse in my setup; It&#039;s a sub amp, capable of 2410rms @ 1 ohm, running more like <a href="http://mailto:800@2" target="_blank">800@2</a>, and a Phoenix Gold m50 - I can crank it until my car drops to a very low voltage without popping any fuses.A regular alternator and battery won&#039;t have enough oomph to pop a 250a fuse unless you short it out while the car is running.&nbsp; Better safe with a smaller fuse.</blockquote>

[QUOTE="theCybe, post: 1582115, member: 558105"] ^ That may protect the wire, but not the amp. Your logic serves only to determine how the wire should be fused to protect it thermally, and it's based on the length [B]and[/B] AWG. A 250amp fuse is way too big. Maximum current draw for an eD 9.1 is 130 amps, which should happen almost never. Use an 80 to 100 amp fuse. 2 AWG is plenty fat for a run inside the car. If you'll be using more amplifiers, you may need to up the fuse, but honestly, it's doubtful. A 100 amp fuse doesn't blow at 100 amps, you must exceed the rating by some percentage to break the circuit. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] Sideline, I run an 80 amp fuse in my setup; It's a sub amp, capable of 2410rms @ 1 ohm, running more like [URL="mailto:800@2"]800@2[/URL], and a Phoenix Gold m50 - I can crank it until my car drops to a very low voltage without popping any fuses. A regular alternator and battery won't have enough oomph to pop a 250a fuse unless you short it out while the car is running. Better safe with a smaller fuse. [/QUOTE]

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