I have a 10 AWG (5.26MM2) 4 C 300040*C TO 90*C F12 water resistant line that was used to power an old tanning bed. It plugs directly into the wall outlet that that is ran from the breaker box to a 30 amp breaker and was hard wired into the old tanning bed with 4 wires just like the cord. The new tanning bed had a (UL) E-111452 12/3 SJTOW 105* C 300WFT-2 Water Resistant --- CSA LL-81601 12AWG (8.8 1-MM)78 i THINK With a 3 prong plug. Can I use the old 10 gage wire and make an outlet for the new tanning bed plug. Does that make sense.