AC Energy Monitor

Isn't it nice to know the featured meter and CT is so simple and safe? It sounds so simple some folks think it's a trick. It isn't. Shut off power at the source, disconnect the hot wire (not neutral) to be measured, slip the current transformer down it. Then run a pair of tiny wires and another pair of slightly larger wires from the meter to the current transformer region. Connect the tiny pair to the current transformer pigtail, continue running the other pair of wires to the same connection point as the wire with the current transformer and splice the two wires in (there are lots of extra connection points in a breaker box).

Too simple!

A lot of the info above is supplemental educational stuff for folks who wish to pencil out exactly what is going on. But the basic installation is a lot more "foolproof" and a heck of a lot easier than installation a DC shunt and meter.