I have a CIAC 12,000 btu model : CG43AX012PH3H1C made by Carrier. I have doubts about the electrical wiring done. Inside the condenser unit have three screws in a row labeled as L1, L2, and G. Right below there are grounding screws.

L1 and L2 have 110V each, there is no problem with this. The G is connected to the ground bus, not the neutral bus as I thought.

I thought that four wires were required , two to supply 110V connected to the L1 and L2, one wire connected to the neutral going to G and a fourth wire connected from the ground bus to the chassis ground green screw.

Any comments are welcome.