liborko wrote:
One of my junk inverters collecting dust in basement actually has voltage at the ground prong at the output. This voltage is about half of the voltage between the two power prongs. So if you are connected to shore power and you plug any three wire appliance into the inverter, you could get shock by touching the appliance with one hand and touching any other appliance like fridge for example that is grounded thru shore power cord. This clearly is a safety issue and I don't want inverter like that in my RV.
You might find 2 things with that inverter:
1) The hot and neutral wires will each carry about 60VAC. You will see 120VAC hot to neutral and hot to ground, though.
2) Sounds like the ground and neutral wires are bonded within the unit. This is normal as the unit (when permanently installed) is intended to be a power source. See #1 as to why you have voltage on the ground line.
Your inverter would be better served connected to a transfer switch OR wired to outlets that are fully isolated from the rest of the ground/bond system.
Cheers!
Mike
