Step 2: The air conditioner disconnect is connected to the air conditioner condenser with liquid-tight flexible metallic conduit, as shown in Figure 2. So you've determined that your AC is tripping the breaker, but you're clueless as to why. 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. The air handler is a fan blower, that blows the cold or hot air from the condenser unit outside or to the rest of the house. 1 Poor maintenance can cause air conditioner breaker trips. But there are a lot of details to consider in the process. This ampacity calculation is generally on the heat pump condenser on a label provided by the manufacturer. 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. In the case of a 1500 sq. breaker too large for AC. The GSX130241 condenser is a 2 ton AC only unit. A retired electrician friend of mine was looking at it all after installation and said that the info. 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. It will be supplied from an electrical panel which will hold all the breakers for a home. There is a small room (8ftx8ft) attached with a sliding door in between. Also tested was a 3 ton air conditioner. 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. I recently purchased a ductless mini split and am trying figure out the correct breaker and wire size. The circuit breaker for this air conditioner circuit should be a 2-pole 30 amp breaker. The size of an air handler is related to the size of the condensing unit. Currently I have a 220v, 30 amp breaker with 10 AWG Romex. If it's more than 50', run #8-2 or 8-3. The installed didn't replace any wiring and left the 30amp breaker in for the 10kw...the 5kw has its own circuit too.The 10kw breaker starting getting hot and tripping. Ameristar™ M4AC4024D1000A - Air Conditioner, 2 Ton, 14 SEER, R410A, 208-230/1/60 Skip to the end of the images gallery Skip to the beginning of the images gallery The breaker size is typically about 125% of the total of the compressor RLA and the condenser fan FLA (full load amperage). Method 1: Manual J Calculation. ... Good question … most modern disconnects at the condenser are the pull-type. Divide the RLA by 5 if it's a newer unit. The rating plate says: Voltage: 208/230. If so, should a 25 amp breaker be installed? That will cause the air conditioner breaker trip if the problem is not repaired. … In an ideal climate situation, the … Both offer a measurement of an air conditioner’s cooling ability over an hour’s time. The max rated breaker listed is 45 in the air handler packet, but the 8kw strip came with a 60amp single pole breaker! When shopping for a new air conditioner, there are many different technical specs to think about. For the air conditioner, divide the number by 12,000 to determine the tonnage required. So I am installing a new Goodman split 410a 2 ton unit with a 8kw heat strip and ran into something I have found mind boggling. Generally, what is the ampacity we see in the field when inspecting an air conditioning compressor circuit? 2-30 amp breakers in the pannel for the heat banks. Dirty condenser coils will cause the air conditioner to draw more power. What Size Home Would Use a 2.5-Ton A/C Unit?. STEP 1: Determine how many BTUs of heating and tons of AC you need. Electrical AC Power (Usually labeled L1, L2, and Ground) 2… DC Control Voltage (Usually labeled 1, 2 ,3) The AC electrical voltage will be 110-120 or 220-230 Volts. These factors include the extent of exposure to the sun and the outside air, the thickness, and type of outside wall insulation, the size of the house, type and number of windows and outside doors, the ceiling height, the age of the house construction etc. The inrush current was 7.26 times the steady state run current of 12.4 amperes. We had a 2 ton heat pump, wired with 3 circuits. For the furnace, divide the BTU by the unit’s efficiency as a decimal. ft. home, the air conditioner would need to be 37,500 ÷ 12,000, which comes out to about 3 tons. The term goes back to the production of ice. I am installing a 2.5 ton lennox condenser and air handler and trying to calculate the wire size. RE: HHP230AKA 2.5 Ton 12 Seer H/P Cond Unit FCX3600C 2.5 Ton 12Seer H/P Air Handler AMFK10AHA 10KW Aux Heat Bank Unit will not start. Learn all you need to know about AC volts and AMPs here. Minimum circuit ampacity: 23.6. The electrical characteristics for my LG ductless mini split are as follows: MOP 35 amps MCA 23 amps Cooling rated amps 17.55 Heating rated amps 17.55 Compressor 17.3 amps Fan 0.25 amps A 240 line is needed for the condenser directly to breaker panel with a disconnect at outside unit. One ton of cooling capacity is equal to 12,000 BTUh. The installer, a Rheem authorized installation company, moved the location of the hp and the disconnect box. Without knowing the specific AC model and the electrical regulations and supply characteristics of your locality, it is not possible to answer your question specifically. The best way to determine the perfect HVAC unit size is to have a Manual J calculation done for your house. Residential central air conditioners come in a range of sizes from 1.5 ton to 5 ton models. A … We replaced the unit with a Goodman 3 ton 15c unit. Get the cost of 1 ton, 2 ton, 4 ton and 5 ton ac unit. Is it necessary to put in a 30amp breaker? In the heat of the summer, one thing's sure to keep you cool and comfortable: a properly sized air conditioner. I had a question regarding the ac unit maximum breaker. Ideal size to cover a smaller house; 2 ton, 13 SEER AC-only condenser; Low sound output; Fully charged for up to 15’ of line set; Factory-installed filter drier; 2 ton. Bummer. Please let me know. With this increased power use, the heat increases. The Circuit Breaker Size for a 230 Volt Air Conditioner. Thanks. 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. Note: For 10/2 (30 amp) use 1/2″ conduit and for 8/2 (45 amp) use 3/4″ conduit. I just had a 2-ton Rheem heat pump and air handler installed, to replace a Carrier 2-ton that was not working. Jim The main room is 480 sq ft (20×24). We sell tons of mini split air conditioners each day on our website, and, on our blog, have previously written about all the benefits of and features to consider when purchasing a mini-split AC of your own. Long-line - up to 250 feet (76.20 m) total equivalent length, up to 200 feet (60.96 m) condenser above evaporator, or up to 80 ft. (24.38 m) evaporator above condenser … It has a peaked ceiling that is 20 feet at the highest point. Larger wire means less resistance or Ohms as well. Upon calculating your HVAC system size (tonnage), you will be shown a selection of systems that fit your recommended size. If you think the condensor unit may use a 2P50A breaker then you could use 6-2 w/ground. Two very important electrical components to know about are AMPs and volts. You can most likely use 8-2 w/ground. AC Unit Size Calculator accurately estimates the size of the central air conditioner unit you should install in your house. 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