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For this application a larger circuit breaker box is required as there
are two separate banks of 120-volt AC power on the positive
position. Each positive bank receives a 120 volt wire marked “X” or
“Y” plus a white neutral wire and green/bare ground to complete
circuitry.
Actually these two positive wires added together are 240-volt AC
service yet serve two separate banks as the external sticker
indicates. A 50 amp main breaker will distribute current to separate
banks, verifying 240 volts are present. There are no 240 volt
appliances in this coach.
If use of a “reducing” adapter or pigtail is needed because 50 amp/
four prong service is not available, several things must be
remembered.
1. A “reducing” adapter prevents you from using 50 amp service as
designed, permitting only 30 amps to enter.
2. Should you choose to plug your camper power cord into a
building receptacle ,BESURE it does NOT have (2) two positive
wires which will be 240 volt AC. Power.
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