I was parked on a ranch for 4 years, where the well house is about 300' from the main house and electric meter, fed with a 30 amp circuit breaker and #8 wire. I could count on a voltage drop of about 1 volt per amp that I was consuming.
So a 12 amp load such as the microwave would drop the voltage from 120 volts to about 108. I have a voltage booster, so I can bring it back up by 12 volts, and run the A/C. Before voltage is 132 volts, once the A/C is running then it drops to around 118 - 120 volts.
One time I was parked at a drag race, and I was plugged into a 20 amp receptacle, then had a 50' long #14 cord, then a 25' long #12 gauge cord, and then 50' #10 cord, the 12 volt voltage booster, then the 25' long RV power cord. I had about 113 volts at the kitchen sink receptacle while the A/C was running. It was warm - 85 - 90 and humid too!
So with a voltage booster, you can run a longer cord, and make up for it with the voltage booster!
Fred.
