Wiring Aac Disconnect

While most units will be 10 12 gauge be sure to read the specifications to get the correct size wire.

Wiring aac disconnect. If the disconnect is added to an existing ac unit it should be within reach of the already existing cable so only a short cable is needed to bridge the switch to the ac unit. A separate disconnect such as the utility required ac disconnect or a backfed circuit breaker in a panel board provided that it meets the location requirements of 690 14 c 1 nec 2011 690 13 a nec 2014 since the additional disconnecting means must be located in a readily accessible location a rooftop mounted disconnect. With the breaker turned off the wires can be disconnected and the cable removed from the e lectrical compartment of the. Depending on whether you have a 110v or 220v circuit you will have either 3 or 4 wires.

Cut enough conduit to reach from the disconnect box to the wiring panel on the air conditioning condensing unit. The wire gauge needed will be in the instructions with common sizes for mini split units being 10 12 gauge. Wiring your disconnect switch will vary slightly from one type of switch to another. The hot wires each carry 120 volts and are different phases.

If the current draw is 28 amps you will need a disconnect rated for 30 amps. The electrical wiring to the disconnect is fed from the load side or outgoing side of the electric meter. How to wire a disconnect. The side of the meter that receives incoming power from the utility service lines is called the line side.

Make sure you use the proper size disconnect. One will ground a bare copper or green wire one will be neutral a white wire and one or two will be hot wires black or a combination of black and red. The line side is the cable supplying voltage from your electrical panel. 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.

Strip about 1 2 inch of insulation from the ends of the wires inside the disconnect box. Step 2 prepare to wire the disconnect switch. Wiring a disconnect box to mini split disconnect boxes are simple to wire up with power coming in and going out. Install the wires to the condensing unit.