2 Ton Ac Wire Size

The whole content is written for single phase 230v ac system.

2 ton ac wire size. Central ac unit cost. Fixing or changing the ductwork to accommodate the ac system can add as much as 3 000 4 000 to the total price. For r 404a and r 22 medium temperature 2 psi is used. Don t forget that devices with motors designed for continuous running e g.

Depending on the size of the equipment and what the length of the run is will determine the wire size. Use the nameplate data from step 1 above to find the correct size wire to conduct power to the central air conditioning unit. Air conditioner or heatpumps need to have wiring sized for 125 of ampacity requirements after derating for bundling or ambient temperature. This is the maximum allowable pressure drop for the entire piping run regardless if it is 50 or 250.

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. At least here in florida. Here s a picture of an air conditioner s data tag that i took just today. Runs through attics where it goes over 85f can require deratting.

Look at the amperage rating on the unit. 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. I am installing a 2 5 ton lennox condenser and air handler and trying to calculate the wire size. You can see that right well trust me.

Table 310 16 shows that three wires of 6 gauge placed in a conduit will safely conduct 65 amperes of power. All loads are categorized into two types. If it s more than 50 run 8 2 or 8 3. For r 404a low temperature 1 psi.

Most residental units are single phase. 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. 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. There are already many good answers but i will still mention some important points.

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. A 30 amp circuit requires a minimum of 10 wire. The voltage range for this wire falls between 0 volts and 2 000 volts. This is a general guideline for home wiring.

The minimum supply circuit ampacity is listed as 15 meanin. This is a 2 ton air conditioner as you can see from the model number.