The installation manual says it requires a 120/240 VAC 20 amp circuit. Can it be installed as 120 vac or does it require 240 vac circuit.

Sorry Mike...that didn't really answer your question. Maybe this will... Basically, it means the microwave requires a 240 volt voltage supply to the conduit. The 120 means that there are components inside the microwave that operates on 120 volts and the magnetron requires 240 volts to operate. That should help

Hey Mike. To answer your question simply...that's a YES. According to the manufacturer the microwave oven rated 120/240 volt, 20-amp, has 4 wires (L1, L2, N and G) in the flex conduit and should be connected to a 20-amp maximum rated circuit, overcurrent protected on both the L1 and L2 circuits. Basically that means the unit needs to have it's own 20AMP breaker and can not be shared with other outlets in the home. Meaning...you can not use the 110V plug typically installed behind a BIM. That being said..you will need to contact your electrician to have the correct breaker and wire run to power this unit. On a good note they do make similar looking units that are 110V 3 prong plug units. You would need to consult you appliance sales person for more information on that. Hope this helps.

Hi Mike, there should be a metal plate on the Microwave that will have the volts and amps needed. Thank you for your inquiry regarding our KitchenAid appliances!