Seann45 is absolutely correct. When I was in the Army at Ft. Lewis, we were working in large trailers that contained a mainframe computer system.
The power cables to these vans were about 3" in diameter and carrying 240V.
Of course since we were Army, the cables had to be coiled up very neatly.
We soon found that the cables got really hot. After uncoiling them they remained much cooler.
Me, DW and 5 dogs
2004 F-150 Reg Cab,Long bed 4X4
2008 Flagstaff 625D Pup (keeping this one for now)
2010 Jayco EXP 21M Hybrid
ďThis isnít rocket science; itís more like quantum physics.Ē