Sky high car audio 2 0 ofc vs welding cable 4 0 ofcSales, Manufacturing & Distribution 48621 Warm Springs Blvd Fremont, CA 94539. I have ordered from TEMCo several times over the last 2 years and have always found the process to be simple and quick. 8 to 0000 (4/0) AWG (CU) 6 in to 20 ft Tin-plated Copper Lugs.