How many runs of 1/0 do I need

This is for my mustang fellas but I know you guys would offer advice still. I will be running 2 amps, probably the Crescendo 1500.1 and 800.4
I will be doing the big 3 upgrade and i'm thinking I will be fine with 1 run of 1/0 from battery to rear of car that will lead to the 2 amps. The crescendo I know will accept 1/0 right at the connections for sure. One guy on another forum said that running just 1 wire and splitting for 2 amps would break that (1) wire down to 4 gauge ........ I've never heard of that lol. I'm thinking he is saying he would run (2) 1/0's to the rear , one for each amp but I'm not doing that but want get more opinions on it.

I started a thread about looking for a way to split that wire, so a distribution block that has a 1/0 in, and at least (2) 1/0 outs. I would think it doesn't need to be fused at the rear since it will have one at the battery but if I or you guys only know of a fused block that will allow me to do that, I would use it. Looking around and googling yesterday all I saw were ones that had 4 and 8 gauge outs. There were some blocks or battery terminal kinda thing that I was thinking i could use that would work but all I've seen were bare metal.

Thoughts guys

 

Hate to not give you a straight answer, but it really depends. It depends on:
1. how much total current draw you expect
2. what is the maximum current rating of the cable you plan to use

Just because the amps accept 1/0 doesn't necessarily mean you need it. For example, 2 AWG copper wire can handle up to 180 Amps (2172 Watts @ 12 VDC). Power cable is sized primarily on ampacity (current capacity), so it does look strange to have a 1/0 feeding a fused distro block and two separate 1/0 feeds going out. If each amp truly requires a 1/0 feed from a distribution block (for current draw reasons) then a single 1/0 input is undersized.

I always recommend installing a fused distro block near the amps. It keeps each amp electrically isolated so that a fault in one doesn't affect the other. Also the main battery fuse is sized for the 1/0 cable; not for a single amplifier fault current.

 

yeah my total amperage draw is going to be 280-304, and I used a chart about a month ago and 1/0 size wire for 12 ft run was what it suggested.

total amp wattage will be about 2100. I just got some good answers from a few guys on caraudio forum and also my box builder so I'm good to go now but you can reply to this with your thoughts too

thanks

 

It is usually a good idea to install wiring that can suit more than what you need. I have 1/0 going into my distro block and 4awg coming out to two amps.

 

Your total draw for those 2 amps should be under 200A
You are fine with a single run of over sized 1/0. Be careful of marketing and the all so illusive OFC. Many companies state that is ofc but the copper purity is under 50%. Ether way, a good 1/0 wire should have a rating of 260ish Amps over 20ft

 

cool thanks. I was thinking about choices for crimping and what I need it has to be ordered plus don't really want to buy it and never really will need to use it so i googled homemade methods of crimping large wire. I did come up with my own idea with what I had lying around and :

ok just did a practice run using what materials I had lying around and wanted to see how it would come out and I might just use this method, not sure. I mean it definitey aint coming loose and wil look better with the sleeves over it. Sorry for grainy first pic and also i know that isnt the correct wire for the lug but was trying to see how it would hold and even the smaller wire is locked solid with just one crimp though i guess 2 cimps would be better but that's crimped solid in middle

Thoughts

 

i did the same thing for my crimps. added some solder to improve conductivity.

 

cool sounds good.

I did find a large crimp tool that I have access too. It is the size of large bolt cutters and goes up to I believe 4/0