Quote:
Originally Posted by tenbear
Here is a link to a wire chart that I have found handy. You can see what wire size you need to have to have the desired voltage drop for the desired length of wire.
https://www.bluesea.com/resources/1437 |
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To figure voltage drop in an AC circuit (50 amp service) use this calculator.
Voltage Drop Calculator
Practical way to check:
When using extension cords I check voltage where I plug in and at the RV to see what the drop is. I plugged into 20 amp circuit with 125 volts, 70 feet away, voltage at RV was 116 volts with nothing turned on. As you add to the load that voltage will drop. Below 108 volts can damage motors and electronics. I am comfortable with 111-112 volts, allows for surge when AC starts or Converter kicks in to charge batteries.
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