Wiring Aac Disconnect

How to wire a disconnect.

Wiring aac disconnect. Cut enough conduit to reach from the disconnect box to the wiring panel on the air conditioning condensing unit. Pull the wire through the conduit while leaving enough on each end to make the connections. Install the wires to the condensing unit. The electrical wiring to the disconnect is fed from the load side or outgoing side of the electric meter.

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. If the current draw is 48 amps you will need a disconnect rated for 60 amps. Step 2 prepare to wire the disconnect switch. Depending on whether you have a 110v or 220v circuit you will have either 3 or 4 wires.

The hot wires each carry 120 volts and are different phases. With the breaker turned off the wires can be disconnected and the cable removed from the e lectrical compartment of the. There are two hot wires and a neutral wire. While most units will be 10 12 gauge be sure to read the specifications to get the correct size wire.

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. If the current draw is 28 amps you will need a disconnect rated for 30 amps. The wire gauge needed will be in the instructions with common sizes for mini split units being 10 12 gauge.

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. Wiring your disconnect switch will vary slightly from one type of switch to another. Wiring a disconnect box to mini split disconnect boxes are simple to wire up with power coming in and going out. The side of the meter that receives incoming power from the utility service lines is called the line side.