In order to use an AC/DC clamp-on meter to do AC current (amps) you will need an extra option (device) called an AC line splitter.
Measuring amps in DC is easy since the clamp only goes around one wire ("pos" or "neg"). Since you do not want to rip apart an AC power cord to separate the wires for a Clamp-on meter, the device plugs into an AC cord on each end to allow the clamp to go over one wire cable only.
If the Air-conditioner is "hardwired", you need to find where the wires are separated inside the unit and check the current there. Be careful to follow all warnings since this is can be more dangerous than a simple DC, 12v amp check.
