2 Ton Ac Wire Size

This is a 2 ton air conditioner as you can see from the model number.

2 ton ac wire size.

Look at the amperage rating on the unit. If it s more than 50 run 8 2 or 8 3. Table 310 16 shows that three wires of 6 gauge placed in a conduit will safely conduct 65 amperes of power. Here s a picture of an air conditioner s data tag that i took just today.

Central ac unit cost. Runs through attics where it goes over 85f can require deratting. This is a general guideline for home wiring. I am installing a 2 5 ton lennox condenser and air handler and trying to calculate the wire size.

These line sizing charts are based on a suction pressure drop equivalent to a 2 f change in saturation pressure and liquid line pressure drop of 5 psi. The voltage range for this wire falls between 0 volts and 2 000 volts. Fixing or changing the ductwork to accommodate the ac system can add as much as 3 000 4 000 to the total price. On average homeowners report spending 3 900 5 000 to install a 2 5 ton central air system in a house that has functional ductwork.

The minimum supply circuit ampacity is listed as 15 meanin. Air conditioner or heatpumps need to have wiring sized for 125 of ampacity requirements after derating for bundling or ambient temperature. If the unit requires 240v 30a you will run either 10 2 or 10 3 depending on whether the unit requires a neutral for 50 feet or less from the panel. The whole content is written for single phase 230v ac system.

Depending on the size of the equipment and what the length of the run is will determine the wire size. A 30 amp circuit requires a minimum of 10 wire. For r 404a low temperature 1 psi. At least here in florida.

12 is for a 20 amp or less circuit. There are already many good answers but i will still mention some important points. For r 404a and r 22 medium temperature 2 psi is used. The disconnect must be within reach of the condensor if the condensor is single phase then you only need to run 6 2 stranded with ground.

All loads are categorized into two types. Most residental units are single phase. Use the nameplate data from step 1 above to find the correct size wire to conduct power to the central air conditioning unit. Before we get into sizing a residential central air unit lets take a quick look at pricing.

The data plate on the condenser reads 1ph 208 230 nominal volts min ckt ampacity 17 2 max fuse or circuit breaker 30 amps hacr my run is 50 to 60 feet from breaker panel to disconnect. This is the maximum allowable pressure drop for the entire piping run regardless if it is 50 or 250.