Hey guys, first post!
I just finished installing a 30 amp inlet and interlock kit in my panel today. Anyway, I was taking some readings with my clamp meter, and I noticed that my well pump draws ~19.x amps when running on the generator, but only ~10.x when running on utility power. The generator is regulating voltage well (drops from ~245 to ~234 under load, some of which is no doubt loss in the wiring), so it's not due to undervoltage. Any ideas? I did take a peak on my oscilloscope and saw that there was some harmonic distortion in the power when under load -- it looked kind of like a shark fin, similar to this: http://stevepedwards.com/wp/wp-content/uploads/2013/05/052713_1709_Recognisabl6.jpg -- but with a little more sine wave and a little less sawtooth. Could that account for it? Could it be an artifact from my meter (it's not true RMS, but I wouldn't expect that big of a difference)? I'm really worried about this, because I don't want to damage my well pump. My well is ~300 ft deep, and replacing the pump would cost quite a bit.
I just finished installing a 30 amp inlet and interlock kit in my panel today. Anyway, I was taking some readings with my clamp meter, and I noticed that my well pump draws ~19.x amps when running on the generator, but only ~10.x when running on utility power. The generator is regulating voltage well (drops from ~245 to ~234 under load, some of which is no doubt loss in the wiring), so it's not due to undervoltage. Any ideas? I did take a peak on my oscilloscope and saw that there was some harmonic distortion in the power when under load -- it looked kind of like a shark fin, similar to this: http://stevepedwards.com/wp/wp-content/uploads/2013/05/052713_1709_Recognisabl6.jpg -- but with a little more sine wave and a little less sawtooth. Could that account for it? Could it be an artifact from my meter (it's not true RMS, but I wouldn't expect that big of a difference)? I'm really worried about this, because I don't want to damage my well pump. My well is ~300 ft deep, and replacing the pump would cost quite a bit.