What Size Wire For Mitsubishi Mini Split

Ductless mini split air conditioner help how to size my system.

What size wire for mitsubishi mini split.

If you are still not sure give us a call at 877 770 3548. Wiring a disconnect box to mini split disconnect boxes are simple to wire up with power coming in and going out. Use a 15a breaker with 14awg wire 3 w g unless you don t need a service outlet at the disconnect the rule for an air conditioner is that you need to use wire that s fat enough to handle the unit s maximum operating current as given by the minimum circuit ampacity and you cannot use a breaker larger than the maximum overcurrent protection device max. I go over how to connect the power wires from the discon.

Each indoor unit will be capable of providing a set number of btu s of cooling and heating power. In order to size your mini split correctly you will need to know the square footage of the room and check it against our table. In this installation video i show how to wire in a mini split air conditioner and heat pump system. I recently purchased a ductless mini split and am trying figure out the correct breaker and wire size.

Depending on the size and model mini splits have specific power requirements. 6 000btu 5 ton 12 000btu 1ton. The sizing chart below is useful to help you determine your approximate central ductless mini split air conditioner size requirements. Mop 35 amps mca 23 amps cooling rated amps 17 55 heating rated amps 17 55 compressor 17 3 amps fan 0 25 amps.

Now that the house and the bonus room are complete i checked and the builder only ran a 12 2 wire 2 insulated wires and a bare ground. I am installing an 18000 btu mitsubishi mini split in the room above my garage. To size your mini split air conditioner the most important thing you need to know is the square footage of the room you re looking to cool and or heat. Some small 9k 12k btu systems may require a 110 volt service but most will require 220 volts or more.

The wire gauge needed will be in the instructions with common sizes for mini split units being 10 12 gauge. If you re considering a ductless split system installation you probably have some questions. While most units will be 10 12 gauge be sure to read the specifications to get the correct size wire. Currently i have a 220v 30 amp breaker with 10 awg romex.

I asked the builder of the house to prewire for the minisplit. Using highly advanced technology mitsubishi electric cooling and heating makes some of the best ductless air conditioning systems on the market.