Efx1/0 or knu 1/0

[Phoenix Risen 10+ year member]

there is no set place where one should be used, i prefer ofc simply for the fact that it will handle more current and is generally more flexible.

 

[Cabin_Pressure 10+ year member]

CCA is great when you want big wire with reduced current capacity...........................

don't really know when that would be, but people sure buy a lot of it, lol.

 

[Dave88LX 10+ year member]

Oh OK.

Reason I ask (and I have a thread up about it), is I was going to run it under the truck to the back bumper to provide a power source for a winch, but, tap off into it to bring it up through the rear cab floor for the amps. Would rarely be using the winch, and, would just shut the stereo off when I was. But for something where the connections will be outside, didn't know if one had a higher propensity to corrode or was better used in this application.