I know it has been rehashed over and over, but I am still having trouble deciding the best way to wire my new HO Alt with the rest of my planned system. I would greatly appreciate the experts to give this amateur some assistance.
Build for Jeep Wrangler Unlimited:
BNR Parts 350 Amp Alternator (Purchased) Yes... I know their reputation, but only the small shops have 300+ amp alts for the 3.8L jeeps.
Dual Skar VXF-15 D4 (Purchased) wired to 4 ohm at 3,000W RMS
Deaf Bounce Apocalypse AAB-7900.1D (Purchased) 4 ohm RMS 3000W
Alpine PDX-F6 (Planning)
JL Audio C2-650 Component Speakers (Planning) 125W RMS Each in Knee Panel
Hertz MPX 165.3 Pro (Planning) 100W RMS Each in Roll Bar
XS Power 3100D (Planning) 12V BCI Group 31 AGM Battery, Max Amps 5,000A, CA: 1565, Ah: 127, 4000W / 5000W+
Wiring - Plan on using 2/0 welding wire
I am calculating the following... 214 amps (3,000W / 14v) from the subwoofer and 17 amps (60W x 4 speakers / 14v) to get to 231 amp. I wanted some extra headroom because I also have some light bars on my Jeep and to account for inefficiency.
My Questions:
What size wire should I use for the Big 3? In my head, I like two runs so that I can put 300amp fuses on the lines. If I run one line, I would have to run a fuse higher than the amps output and I heard running too high of fuses becomes less effective in managing heat/fires... or am I mistaken?
What size wire should I use for the line from the main battery under the hood to the rear batter? Again, I'm thinking of two lines so I can put 300amp fuses on them?
What size secondary battery should I use? I see people suggesting just adding up the RMS. So I'm thinking between the XS Power D4900, D6500, OR D3400R?
Edit: Updated after changing calculations from 2ohm to 4ohm
Edit2: Updated new build