Ac Outdoor Unit Electrical Wiring

Wiring an a c unit involves installing a double pole 240 volt circuit breaker in the main service panel running a 240 volt cable to the a c s location installing a safety disconnect switch there and then running weatherproof flex from the switch to the a c s terminal box.

Ac outdoor unit electrical wiring.

Strip about 1 2 inch of insulation from the ends of the wires inside the disconnect box. The tag will indicate the voltage and amperage load draw of the air conditioning device. Locate the nameplate data tag on the air conditioning unit. Do most installs of 4 indoor units draw their power off the outside unit vs.

The high voltage wires have two insulated power wires and one bare copper ground wire. Pull the wire through the conduit while leaving enough on each end to make the connections. Install the wires to the condensing unit. Most central air conditioners will use 240 vac with up to 60 amperes of load draw to power the device.

The high voltage wires from the air conditioner disconnect box usually mounted on an outside wall within arm s reach of the air conditioner unit are now pushed up through the wire clamp in the bottom of the box. This metal tag will be near the electrical connection box for the unit. After that the main power cord of the split air conditioning unit is connected to this disconnecting means from one side the other side is connected to the terminal box in the indoor unit see fig 9 or in the outdoor unit see fig 10 according to the manufacturer s recommendations and wiring diagrams. Making a separate electric run to the main breaker box.