Top positive review
006 ohms per cable they are good for up to about 250 amps before voltage IR ...
Reviewed in the United States on April 4, 2017
Jumper cables are well made. I was curious to see if the wire was solid copper or copper plated aluminum. I made four point resistance measurements and found out the red cable had a resistance at 73 F of 0.0061 ohms and the black cable had a resistance of 0.0058 ohms. Taking an average gives a resistance of 0.00595 ohms. This translates to a resistance of 0.298 ohms if the cable was 1000 feet long., 1000 feet of AWG 2 copper wire has a resistance of 0.156 ohms at 68 F. 1000 feet of AWG 2 aluminum wire has a resistance of 0.256 ohms at 68 F. The cables are clearly not solid copper. It is curious that my measurements are closer to AWG 3 aluminum wire at 0.323 ohms per 1000 feet at 68 F. I could speculate that the cables are actually AWG 3 aluminum and the copper plating lowers the resistance to where I measured it. With a resistance of about 0.006 ohms per cable they are good for up to about 250 amps before voltage IR drop becomes so much the voltage is too low at the load end. In any event, the cables are still a good value and I gave them five stars. I was just curious about the wire.