Stray Voltage?
My RV has a stray voltage problem, and I'm wondering if anyone has any good ideas on how to find or fix the problem. My daughter complained to my wife that she thought she was getting shocked when ...
Forum Discussion
Is this a digital multimeter? If so, it has a very high input impedance, and is basically measuring static charges. Measuring voltage with respect to the earth, where the earth connection is a 1" probe stuck in dry ground, is bound to be highly error prone; you'd probably get a more consistent ground by tightly gripping the probe yourself (and not touching the other one's metal). Neither is a very good ground connection, though.
Were you reading 0? (zero) between the ground pin on the plug and the other pins, or ?? (infinite)? The first is a short circuit, the second is an open circuit. I would expect to see an open circuit; a short circuit suggests a ground fault in the trailer—indeed the definition of a ground fault would be a connection between ground and one of the other lines. If you have a hardwired inverter, possibly the transfer relay for the inverter is doing something with bonding ground and neutral and causing a ground "fault"; if it only does that while it is operating, it's not really a problem, but if it does it when you're on shore power, that's not good.
Were you reading 0? (zero) between the ground pin on the plug and the other pins, or ?? (infinite)? The first is a short circuit, the second is an open circuit. I would expect to see an open circuit; a short circuit suggests a ground fault in the trailer—indeed the definition of a ground fault would be a connection between ground and one of the other lines. If you have a hardwired inverter, possibly the transfer relay for the inverter is doing something with bonding ground and neutral and causing a ground "fault"; if it only does that while it is operating, it's not really a problem, but if it does it when you're on shore power, that's not good.
