50 amp rig using 30 amp pedestal
when plugged into 30 amp pedestal, the monitor panel shows 2 legs (or at least 2 separate 120 volt readings. Now I understand, I think, why 50 amp power plug would show 2, 120 volt lines because there...
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Hi,
The adapter has two wires going into it, then has three wires (plus ground too) going to the 50 amp plug. What happens is the white wire goes to the center neutral of the 50 amp plug, while the black 30 amp wire goes to both sides of the 50 amp plug.
The black wire is protected by a 30 amp circuit breaker, and is feeding both sides of the 50 amp plug. Your monitor is reading 120 to ground on both legs of the incoming wire, but it is all protected by the 30 amp wire, so be sure to not exceed the 30 amp limit.
It is easy to exceed the 30 amp limit, though I never did in years of RVing. the coffee maker can use up to about 12 amps, a toaster or toaster oven about 8-10 amps, microwave despite it's 1,000 watt output can have a 1,500 watt input or about 12.5 amps.
Each air conditioner can use 12.5 amps on a cooler day, while upwards of 14 or 15 amps on a hot day.
Fred.
The adapter has two wires going into it, then has three wires (plus ground too) going to the 50 amp plug. What happens is the white wire goes to the center neutral of the 50 amp plug, while the black 30 amp wire goes to both sides of the 50 amp plug.
The black wire is protected by a 30 amp circuit breaker, and is feeding both sides of the 50 amp plug. Your monitor is reading 120 to ground on both legs of the incoming wire, but it is all protected by the 30 amp wire, so be sure to not exceed the 30 amp limit.
It is easy to exceed the 30 amp limit, though I never did in years of RVing. the coffee maker can use up to about 12 amps, a toaster or toaster oven about 8-10 amps, microwave despite it's 1,000 watt output can have a 1,500 watt input or about 12.5 amps.
Each air conditioner can use 12.5 amps on a cooler day, while upwards of 14 or 15 amps on a hot day.
Fred.
