1. ## Question about wire size and lights dimming

Hello I'm still currently trying to solve my car lights / dash dimming. I plan on buying a new battery when I get my taxes. But my current wire is "0gauge" I don't remember what brand it is but not a brand that's common for wire. But I was thinking maybe my lights dim from trying draw too much power through a small wire? I believe my power wire is about 15 feet long and has a 100a fuse on it, I'm running about 1700rms total. I was thinking wouldn't that wire be pulling alot more than 100a if its really 0 gauge? But I know almost nothing about how the current flows through wire so any help could help me cross this off the list of probabilities. So I know fuses can take more than the rated amps for short period of times, but anyone ran about 1700rms on a 100a fused wire more than 15 feet long? Also my wire does seem a lil small for 0 gauge but then again I've never seen a true 0 gauge vs fake 0 gauge wire in person. The wire came with no strand count so I have no idea how many it has. If you think the wire in a little small I was thinking about buying 25 feet of knu 0 gauge to replace the power/ground and also the big three. So any help would be very helpful.

2. ## Re: Question about wire size and lights dimming

If you don't have the big three yet, that should be the first thing to upgrade because the factory alternator wires are not meant for upgrading your car system, so i would first get the big three upgrade

3. ## Re: Question about wire size and lights dimming

I do currently have it with the same wire as my power to amp

4. ## Re: Question about wire size and lights dimming

0 gauge should be rated for 250A if CCA and 300A if OFC

5. ## Re: Question about wire size and lights dimming

Ok yeah, but shouldn't I pulling a max of like 185amps (well over the 100a fuse) when my amp draws for bass hit. 1500rms can draw up to 188amps in short bursts but 4 gauge can only handle say 125 at 15 feet which wouldn't pop my 100a fuse as easy. I got some 4 gauge stinger wire that ill compare to my "0 gauge" and see what they look like. 0 gauge should be almost but not quite twice as much copper yeah?

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