Well, I coil my excess 30 amp cord around my bumper. I figure the iron bumper should act like a choke and stabilize the voltage some.
Here is an interesting discussion on the topic. No conclusion I can find.
This made the most sense to me:
A coil of wire has inductance if the current in it creates a magneic field. You have both the current in the hot wire and the current in the neutral (return) wire, so the currents cancel out and you have no net inductance. But the wire will heat up just from its resistance, and amp load on individual wires, and lack of cooling from ambient air flow.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW