[northtanman]

Please read below....

Originally Posted by Brian Oshman

This is an amprobe. It clamps around individual wires without any physical connection and reads the amount of current that is passing through the wire. It uses magnetic flux around the wire. It is essentially a single turn winding transformer. The wire is the primary side and the meter is the secondary side.

Brian, when using one of these...to see the current draw of a particular unit, while the unit is running is when you use this eh? I have one, but have never had the need to use it.