... -voltage,over-heating,etc5.Easy to check with inverter with LED indication that can be up grade ... No-load draw:3A DC N.W14.3KGOutput Wave Form:pure sine wave Rated Power:1000WHarmonic Distortion: continuous output:800wOver voltage shutdown ... steroes, fans etc... Smaller power tools (drills etc..), small-medium pumps, kettles, pots, small heaters, microwaves 1000w pure sine wave solar generator