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
Salvo wrote:
The 60V from hot to ground and from neutral to ground are caused by capacitive voltage divider, not inductive coupling. Some electronics (like the converter) have emi capacitors from hot to ground and from neutral to ground. The sum of these two voltages will add up to 120V.
Even though the 60V seems daunting, it is harmless. If you were to measure this voltage with an analog meter you would get about 5V, not 60V. The analog meter has lower input resistance, similar to what the human body has.
Although I'll pass on the human body test I did compare DVM to analogue voltmeter readings and the analogue reading was significantly lower in each case ... the only reading that remains consistent is the hot > neutral, which one would expect. Interesting also is if I reverse the probe polarity for either meter the neutral > ground readings change to something completely different. Regardless of what is causing this it's evident that bonding the inverter's output makes this "problem" of errant voltage readings disappear ... whether that's preferable or not I guess is the question I still haven't been able to answer.
