Air Conditioner Electrical Wiring Size

See the owners manual for the specific circuit requirements.

Air conditioner electrical wiring size.

For best results locate a licensed electrical contractor in your area who can assist you with the installation. Control cable 4 core between indoor and outdoor depending on whether it s heat pump or cooling only. To ensure proper function safety and energy efficiency you must use appropriate wiring that meets your units energy needs. Most air conditioners require a dedicated electrical circuit for both 120 volt or 220 volt.

The data tag and the wiring of the air conditioner in orr s home which includes a no. While most units will be 10 12 gauge be sure to read the specifications to get the correct size wire. Step 1 locate the nameplate data tag on the air conditioning unit. The wire gauge needed will be in the instructions with common sizes for mini split units being 10 12 gauge.

For motors it is recommended to multiply the nameplate fla by 1 25 for wire sizing. It s going to completely depend on the unit that s being installed but commonly it ll be 30 60 amp with 10 4 awg wire. 10 wire on a 50 amp breaker. You re probably looking at a 3 5 ton unit so you ll be in the 30 40a 10 8 awg range.

10 on a 50 a breaker. Single or 3 phase feed to the outdoor condenser unit typically 16 to 32amp supply. Amperes enter the maximum current in amps that will flow through the circuit. Wiring a disconnect box to mini split disconnect boxes are simple to wire up with power coming in and going out.

Single phase voltages are usually 115v or 120v while three phase voltages are typically 208v 230v or 480v. To determine the right circuit breaker size for an air conditioner we look at both the minimum and maximum size allowable. Voltage enter the voltage at the source of the circuit. It might be worth it to get a few quotes from local hvac companies and see what they want to install.

Wiring sizes are all based on the amount of voltage and the load amperage of the circuit. Single phase feed from outdoor to indoor unit typically 5 amp supply unless it s got additional electric heating within the indoor unit if it s fan coil. Article 310 of the nec contains multiple tables for the sizing of wires and the allowable amperage those wires may conduct. An air conditioners electrical box which is usually located on the back of the unit near the bottom allows energy to be transferred from the electrical outlet to the air conditioner.

The circuit breaker size for a 230 volt air conditioner kevin according to the specs for the air conditioner the circuit that should be installed would be a 30 amp 230 volt circuit using 10 2 cable with ground. A wire and contactor displaying the 90 c rating on the wire and 75 c rating on the contactor when properly torqued.