Plugging 30A 5th wheel into 50A service
Will I have any problems if I plug my 30A fiver into 50A service at a RV park. I will not be drawing any more than 30A, but the park says I should pay $50 deposit to rent a "box" from them.
Forum Discussion
The way a four wire 240V circuit works you have a ground, neutral, and two 120 hot phases. 240V appliances just use the two hots and ground. A 120V appliance uses one or the other hot and neutral. If neutrals path to the reference source is broken, then a 120V finds the path to the other 120V phase and you have 240 across the appliances, smoke and smell.
Ecample.
Refer on phase one and neutral =120V
Microwave on phase two and same neutral = 120V
Neutral burns up in at power pole(common occurrence). Phase one comes in on hot lead to refer and goes out neutral, then finds no route to source. It does however find a route via the microwave's neutral and on out to the other phase 120V. 120+120=240 volts across the two devices. Repeats across other devices on the two source phases. Low resistance devices burn up one after another working towards higher resistant devices.
Chris
Ecample.
Refer on phase one and neutral =120V
Microwave on phase two and same neutral = 120V
Neutral burns up in at power pole(common occurrence). Phase one comes in on hot lead to refer and goes out neutral, then finds no route to source. It does however find a route via the microwave's neutral and on out to the other phase 120V. 120+120=240 volts across the two devices. Repeats across other devices on the two source phases. Low resistance devices burn up one after another working towards higher resistant devices.
Chris
