So Ive been looking at numbers, maybe im way off.

its .078ohms/1000ft

ohms/1ft ------------ 12v 14v------------ 12v Amps--- 14v Amps

1-/0 0.00078 ------------ 12v 14v------------ 15384.61538--- 17948.71795------------ 205.1282051

205A is at 75ft which is close to 250likemost charts say with the 1ft values are high as hell though.

This looks more reasonable.

1/-0 ------------ Ohms ------------ ------------ Amps

350A ------------ 12-- 14 ------------ ------------ 12-- 14

50ft ------------ 0.034285714---- 0.04 ------------ 350-- 350

25ft ------------ 0.017142857---- 0.02 ------------ 700-- 700

12.5ft------------ 0.008571429---- 0.01 ------------ 1400-- 1400

6ft ------------ 0.004285714---- 0.005 ------------ 2800-- 2800

So i know .078/1000 !=.00078... but the numbers were closer i suppose at first....Soo i doubt the first numbers are right.

The second attempt was taking 350A at 50ft ohms law = .0342...ohms.

Divide that is like adding another 1/0 wire halving the resistance..i think, so you get the halved impedance then E/R=I

Guess it would be easier to cut a ft of 1/0 and get the actual resistance.

Just me being bored.

edit-its a chart when i edit it when it post it goes together

Edited April 20, 201114 yr by djjdnap

interesting but who's got a DMM that's very accurate in the thousands?

No matter how long of wire i've used in the past, even if it's 50ft, measuring resistance is just 0.000 so can't use mine, lol.

are we talking THHN, THCN, MCL what kind of wire? for car audio I assume? what will be the operating temp of the wire? need a lil more info and ill get you a answer

100% coper

copper coated aluminum.

most wire is rated at what -40 deg C. to +90 deg C