... Good question … most modern disconnects at the condenser are the pull-type. The rating plate says: Voltage: 208/230. The term goes back to the production of ice. Please let me know. Minimum circuit ampacity: 23.6. Wrong yes, but what are the consequences? If it's more than 50', run #8-2 or 8-3. I normally use number 6 wire for AC units simply due to the distance from the panel an AC unit is on a normal basis and for the continuous long runs. Both offer a measurement of an air conditioner’s cooling ability over an hour’s time. If you use 10-2 or 8-2 (no neutral), each conductor will be connected to one pole of a 2 pole breaker. One ton of cooling capacity is equal to 12,000 BTUh. LG LS120HEV2 12000 BTU Mega Series Single Zone System with Heat Pump. An air conditioner’s cooling capacity is expressed in BTUh (British Thermal Units per Hour) or tons (often referred to as “tonnage”). The best way to determine the perfect HVAC unit size is to have a Manual J calculation done for your house. The GSX140421 Goodman condenser is a 3.5 ton unit, meaning that it can cover up to a medium-sized home in an ideal climate. Jim Ac unit called for max size breaker of 30 amps. Breaker size depends on what is installed and length of wire. Divide the RLA by 5 if it's a newer unit. 2-30 amp breakers in the pannel for the heat banks. Lets sat I have a 3-1/2 ton 13 Seer condenser that I need to run a wire to. AC calculator uses your house size (square feet), climate zone, efficiency and equipment type (standard central air vs central heat pump) to show you exactly what size central air unit you need. In the heat of the summer, one thing's sure to keep you cool and comfortable: a properly sized air conditioner. ft. home, the air conditioner would need to be 37,500 ÷ 12,000, which comes out to about 3 tons. Note: For 10/2 (30 amp) use 1/2″ conduit and for 8/2 (45 amp) use 3/4″ conduit. But there are a lot of details to consider in the process. There is a small room (8ftx8ft) attached with a sliding door in between. The breaker in the panel is 40 amps. A retired electrician friend of mine was looking at it all after installation and said that the info. Once you have determined the sizing requirements for the cooling side of your heat pump system, you then need to select the proper supplemental heating element that is included with all of our heat pumps. Residential central air conditioners come in a range of sizes from 1.5 ton to 5 ton models. The max rated breaker listed is 45 in the air handler packet, but the 8kw strip came with a 60amp single pole breaker! The breaker size is typically about 125% of the total of the compressor RLA and the condenser fan FLA (full load amperage). Currently I have a 220v, 30 amp breaker with 10 AWG Romex. 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. The Circuit Breaker Size for a 230 Volt Air Conditioner. That will cause the air conditioner breaker trip if the problem is not repaired. It has a peaked ceiling that is 20 feet at the highest point. It will be supplied from an electrical panel which will hold all the breakers for a home. Ductless mini splits are one of the most popular AC choices for homeowners and businesses alike. Thanks. Method 1: Manual J Calculation. The main room is 480 sq ft (20×24). … A common residential heat pump condenser will have number 10 wire which terminates in the main electrical panel to a breaker specifically sized for the ampacity of the condenser. For the furnace, divide the BTU by the unit’s efficiency as a decimal. A 240 line is needed for the condenser directly to breaker panel with a disconnect at outside unit. 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