The SO cable only goes well over a 2 awg and they also make it in a 3, 4 and 5 conductor. Probably one of those conductors is green and used as a ground insert. That's the break between SOOW cable and Industrial power cables because the device jumps to a Type W cable which gets as huge as 4/0, or 0000, 5 conductor. If constructed foods and drinks given our b...