Sine Wave Inverter Anomaly
After following this recent discussion about how to best utilize a sine wave inverter for RV use I decided to go ahead and buy the 1000 watt model mentioned in this discussion since it was on sale for...
Forum Discussion
SoundGuy wrote:
Done ... with some interesting results!
...
Bonded results are in { } brackets.
Inverter Output Alone
Hot > Neutral 122 vac {117.5 vac}
Hot > Ground 00.3 vac {117.5 vac}
Neutral > Ground 00.3 vac {00.0 vac}
Main Service Cable Plugged Into Inverter, Surge Guard ON, Converter Breakers OFF, Measured Outside Trailer Where Main Service Cable Plugs Into Inverter
Hot > Neutral 120.2 vac {117.1 vac}
Hot > Ground 121.7 vac {117.1 vac}
Neutral > Ground 32.2 vac {00.0 vac}
...
Definitely interesting. But what's going on here?
The inverter output is floating but it's not the 60V on each leg as mentioned earlier.
Then as soon as you plug it into the trailer, ground gets "sortof" bonded to neutral and now hot to ground shows 120V. What's doing that? Your bonded plug clearly does a much better job of bonding!
EDIT: And yes, your ohmmeter earlier showed no bonding in the trailer.
Can't wait to get to my trailer and do the same thing.
