Electrical question?

[brian015]

Originally Posted by JERRY2KONE

If it is in fact a 220v unit I would assume that it will have two 120v feeds, one neutral, and a ground.

Jerry - my 240V home wall-unit air conditioner only has three plugs - leading me to conclude it does not need a connection to neutral - it is two-phase 120V (plus a ground plug). I would guess your microwave would have same plug (for household use).

[_paralyzed_]

HIRE A LOCAL ELECTRICIAN FOR 5 MINUTES TO HOOK UP YOUR MICROWAVE.

[Overdriven]

Originally Posted by brian015

Jerry - my 240V home wall-unit air conditioner only has three plugs - leading me to conclude it does not need a connection to neutral - it is two-phase 120V (plus a ground plug). I would guess your microwave would have same plug (for household use).

Air conditioners are generally rated for less than 15amps. An electrician can chime in on this but I'm pretty sure it's not required to have both a neutral and a ground conductor with this amp draw. Although 4 conductor plugs and cords with separate neutral and grounds are available.

For higher amp draw, homes built before 1996 (or any additional wiring installed before then) are also allowed to use only 3 conductors combining ground and neutral. But newer homes and wiring have 4 conductors (separate ground and neutral) and 4 prong plugs for 220/240v use in circuits 30amps and above such as dryers and electric stoves.

[JERRY2KONE]

A local electrician will not do me any good. Trust me they will be so confused by this microwave and treat it like black magic. They are confused by their own power system, and are very reluctant to assist with anything that they do not design. All of our maintenance support staff are local hires.