2 runs of 1/0 worth it?

[soundstream15]

my electrical consists of, js 240a alt, xs power 3400 up front, big 3 and 2 kitneik hc2400s. I am running a nendo 5500. my voltage doesn't drop below 12.7

would it be worth it to add another run of 1/0? I only have 1 run

[audiofanaticz]

Wire has resistance in it.

By adding a 2nd run of 1/0 wire of EQUAL length, it should help minimize the resistance in the wire from front to back, in the end resulting in a lesser voltage drop theoretically.
The main thing would be having both runs equal lengths.

So lets say your vehicle is charging at 13.6volts hot, and your power wire is 18 feet long, and your dropping to 12.7volts

That means your losing about 6% or .9volts from front to back.

If you add a second 18 foot long power wire you will drop to 13.2volts which means you would only be losing about 3% or .4volts from front to back.

If you add a third 18 foot long power wire you will drop to 13.3volts which means you would only be losing about 2% or .3volts from front to back.

If you add a fourth 18 foot long power wire you will drop to 13.4volts which means you would only be losing about 1.5% or .2volts from front to back.

At one point or another you will start to reach diminishing returns each time you add another run of wire.

This is only somewhat accurate however due to me not knowing your current length of wire from front to back, your hot charge voltage, and the amount of current being transferred through said wire at its max load (you would need to clamp it to know that).

For the above math I used a 18foot run of wire because that is about an average length used in a vehicle.

I estimated 300amps of current being drawn through your power wire at max.

I ruff estimated your alternators hot charge voltage of being around 13.6volts.

These unknown variables can be a big factor in the outcome.

However you should be able to know for yourself by what I posted if adding a 2nd run from front to back is worth it to you, and a ruff estimate of what you "may" gain for your money spent.

[soundstream15]

I already got the wire. my car does have a pcm.

it does charge high 13s low 14s.

but what you said makes a lot of sense

[Ratski]

I have some 1/0 7 strand covered copper. I wonder if this would work being such big strands. Vs 1/0 that has like 300 strands In it. Or would it work better for current flow. Either way it will be way harder to work with and train but I already have some. Who would use it?

[Htown B.O.B.]

it would work the same but would be a pain in the ass to run in a vehicle. if you have a pretty straight run then could use it but if you will have to bend it and run through anything I wouldn't. probably better to get some more ofc cable just for the ease of it.

[Bump4life]

a second run will more than likely reduce your voltage drop percentage below 5% which is the standard for most electrical applications. Anything over a 5% voltage drop is unacceptable. If you hold 12.7 you are running on batteries. Alternator can not keep up with load. so adding an extra run may help get more amperage back to hold higher potential