March 26, 2017 @ 4:00 PM


If you know that you have 120 volts going into your RV, and you have 30 amp main service inside that RV, then if you multiply the 120 volts times the 30 amps, you get 3600 watts.  One might think there’s a proportionate link between differing amp levels when, in fact, that isn’t necessarily so. For example, 20-amp service requires 2,400 watts (20 amps times 120 watts), and 30-amp service needs 1-1/2 times as much power (3,600 watts, or 30 amps times 120 watts). For 50-amp service, however, the potential amount of power used – 12,000 watts, or 50 amps times 240 volts – represents more than three times as much possible demand as 30-amp service. Conversely, a 50-amp rig hooked up to a 30-......

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