[Al Skierkiewicz]

Keith,
By now you have gathered that the current flows in both wires so both wires contribute to the voltage drop while running at 30 amps. If your motors stall at a greater current, then the voltage drop changes for that increased current. This was a question on the FCC First Class RadioTelephone License test. You were asked to determine the voltage drop to the tower navigation light at the top of a 1000 ft. tower. One of the answers was the drop in one wire, the correct answer included the voltage drop in both wires.