You almost never hear of a DC Watt Meter – one just does some mental math with Volts and Amps at the back of one’s head. An AC Watt Meter, on the other hand, can by pretty useful on any workbench.

THE Energy Regulatory Commission (ERC) cautioned the public about the sale and use of electric watt-hour meters without its authorized seal or those bearing fake seals, stickers, and false meter test ...