Sine Wave Inverter Anomaly

vermilye wrote:
There is little advantage to bonding a portable generator if there is no low impedance earth ground (i.e. an 8' 5/8" driven ground rod ...

SoundGuy wrote:
Which obviously none of us are going to do in a campground. However, bonding neutral to ground, as indicated by my measurements, does eliminate strange voltage readings where one wouldn't expect them so the question is whether there is still value in bonding to prevent these voltages from possibly causing any problems with the equipment being fed. :@

BUMP ... in hopes someone may respond to this question. :@

I notice my twin fan which exhibits no motor noise at all when powered with 120 vac shore power but does squeal like crazy when powered with an MSW inverter also does still squeal ever so slightly when powered with my new 1000 watt sine wave inverter. Curious whether this has anything to do with errant voltage readings between the inverter's neutral and ground when not bonded I just tested it with the output bonded and found no improvement, the fan still squealed slightly. That tells me (I think) this slight squeal probably has nothing to do with these errant voltages and that this inverter's sine wave output really isn't as "pure" as the manufacturer would have me believe and is likely still somewhat ragged compared to shore power. I'd still like to know though whether these unusual voltages between neutral and ground when the inverter output is not bonded present any danger to the equipment being powered. :h

Any comments? :@