LeftieBiker wrote: ↑Fri Nov 08, 2013 10:11 pm
A real electrical supply store is your best bet. You might be able to find that wire gauge in truck jumper cables, but no guarantee.
Just went to the scrap metal yard yesterday and got the 2awg cable (it's AWM "appliance wiring material" but close enough) and also a nice 25ft piece of 10awg SOOW (to make a cord to go from the inverter to my load center or whatever) all for about $20 !
On thing I'm glad I came across somewhere (maybe earlier here): you don't want your 2awg to be THHN/THWN "building wire", because it's way too stiff. Welding cable is ideal, since it's many more strands of much thinner copper, but the AWM is plenty flexible.