[Ether]

I just tested a 750/1500 watt dual heat resistive space heater with the Kill-A-Watt. The readings made sense. Power Factor 1.00 (as expected), and watts approximately 765 (on low) and 1443 (on high).

When I get a chance, I'm going to test a larger sample of incandescent light bulbs of various brands and power ratings.