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
road-runner wrote:
Does the fan even have a connection to the ground wire?
No, it doesn't, nor does the table fan, but other devices such as the toaster, coffee machine, and hair dryer are wired to ground with a 3-prong plug. The fan squeal isn't so much of an issue as it is a curiosity because it is so slight, yet nonetheless distinguishable from when the fan is running on 120 vac shore power. Rather, I'm more interested in these unusual voltage readings between neutral and ground when the inverter output is not bonded.
The quality of the filtering varies from inverter to inverter, possibly related to "you get what you pay for".
That certainly seems to be the case here ... unfortunately I don't have access to a premium quality sine wave inverter so I can compare the results but it wouldn't surprise me if this slight squeal disappeared entirely.
