Hello Drok –

I’d like to know how accurate Power Factor measurement is at low current and wattage levels.  I am attempting to use you Ammeter #200386 to measure power consumption of an induction stovetop in anticipation for powering it off-grid with an inverter that is battery supplied for a camper van.  When the 110VAC stovetop is plugged in but not being used for cooking, it draws standby power to enable the touch control buttons.  Ammeter #200386 measures this at 2.2 watts / 2.8A at 122VAC.  At the same time, it measures Power Factor at .01.  I take that to mean the apparent consumption of the stovetop is 2.2W / .01 = 220VA.  That doesn’t seem right!  A similar condition exists at the two lowest cook settings when the stove cycles on and off.

See link to my list of measurements and page from the stovetop owner’s manual.

Thank you.