Total Home Supply offer, Honeywell 14/4 Mini Split wire in 50 ft and 250 ft rolls. Typically, you would expect the energy efficiency rating to be between 8 and 12. There are equations to work this out, but for air conditioners, its a bit too complicated. Use 6-gauge aluminum wire or 8-gauge copper wire. Your email address will not be published. Figuring out precisely how many amps your heat pump will use is a tricky question to answer. Tankless Water Heater Wire Size Calculator: What Gauge Wire (AWG)? It is standard to measure air conditioner and heat pump size based on tonnage. A central system cools or heats air at a central compressor unit and distributes the cooled air throughout the residence through ductwork. Some manufacturers recommend using round crimp style terminals for a more secure connection. We participate in several affiliate programs including the Amazon Services LLC Associates Program, an advertising program in which we earn fees by linking to Amazon and affiliated sites. Air Conditioner BTU Chart; With 12,000 BTU (1 Ton) Room Size Example. From figuring out the difference between 10/2 or 10/3 wires to the nitty-gritty of the wiring and installation of your mini split, we hope to have resolved your electrical wiring concerns. Heat pumps run on electricity, while traditional heaters run on gas. Given their large current draw and high voltage requirements, central . Related Article Is Getting A Mini Split Worth The Cost? Unless you are an advanced DIYer with extensive experience in electrical work, we strongly advise you to hire a professional to get the job done. It will allow more power than expected before tripping, causing your wiring to melt and potentially start a fire. Example: You have a 2,000-watt mini split running on 220V voltage. Calculator + Chart (Natural Gas), Average Gas Bill For 1-Bedroom Apartment: State-By-State Cost Analysis, Average Electricity Bill For 4 Person Household (Survey Analysis), How Many kWh Per Day Is Normal? The formula for amps is simple: Watts / Volts = Amps. Building-Center.org is a good resource for determining the age of your HVAC and other mechanical equipment. All Rights Reserved. Youd want to remove the thousands portion of the number and remember that every 12,000 BTU of cooling capacity equals precisely 1 ton. Recommend / must use a GFCI at the main breaker? Central air conditioning requires between 208 and 240 volts to operate and draws between 15 and 60 amps depending on the size. At first glance, sorting through the seemingly endless amounts of information displayed on the label may look daunting. Facebook Twitter Reddit WhatsApp Telegram Share Table: How Many Amps Do Window, Portable, Mini-Split Air Conditioners Draw What size wire do I need for an outside AC unit? The ground wire is essential for safe operation, preventing damage to the air conditioner and protecting your family, which is why going with 14/4 is always better than 14/3. Mini-split air conditioners and heat pumps are very popular and excellent at cooling a relatively small space compared to a central AC system. My unit upstairs has been working fine and then the next day it wouldnt turn on. Air conditioners and heat pumps are necessary equipment in many homes to make things comfortable. On the smaller side of practical knowledge, but it is readily available as well, this line indicates whether or not your pump is using the old R-22 refrigerant, which is slowly pulled from circulation, or the newer, industry-standard R-410A. Many thanks for your answer. Some smaller capacity units only require 110/120 volts. Both the wire and breaker size fall within the parameters outlined above. Few times in life are the answers given to us quickly. 7 How many BTUs does a Fujitsu mini split use? You should use an electrical whip designed to go from the disconnect to the unit. Installing ductless mini splits requires a high level of electrical knowledge for the job to be done safely and without harm to yourself or the unit. This means you should have 2 of the 3 variables before you start, and youll need to determine the Watts. With any electrical project, be sure to check with a licensed electrician and verify the requirements of your local codes. It depends on your specific unit. A 12,000 BTU air conditioner costs an average of $0.14 per hour to run. You can see the green, black, and red wires connect the terminal blocks on the bottom right. Its imperative to note that you will need a generator that can handle several times the average current required to kick start things in the first place. Portable Vs Window AC Which Is Best for Home Cooling. 1500 - 2250 W. As you can see from the table above, a 12,000 BTU air conditioner can use 1500W (8 EER rating) or 1000W (12 EER rating). * What is the supply voltage? Understanding the intricacies of your HVAC system, the wiring, and the subtle other nuances that make it work can be complicated and far too much work for some people. Given that information, the main power panel has two separate breakers for the air handler and the other one for the heat pump condenser. If you have a mini split and need to know how many amps they draw, you have a problem. It is essential to know how many breakers you will need for a split heat pump or central AC in the first place. A surge protector can also be used to help protect the . What Size Wire Is Needed For 200Amp Electrical Service Home Inspection Insider, https://www.youtube.com/watch?v=4dkY0zs7sBQ, Reading the Rating Plates of an Air Conditioner! how many watts and amps does a 12000btu mini-spit AC use? On average an air conditioner uses this much Amps: A 5,000 BTU AC unit uses: 3.62 to 5.43 Amps; An 8,000 BTU AC unit uses: 5.80 to 8.70 Amps; to 10.87 Amp; A 12,000 BTU AC unit uses: 8.70 . This would cause your circuit breaker to trip and your power to go out. This is what I got to install my system from LG. If you have a 1000W electrical appliance connected to a 240V circuit, it will be drawing 4.17 amps. Small mini-split systems and window units often require a 15 amp breaker, so a 12-gauge aluminum wire or a 14-gauge copper wire is usually suitable. Your email address will not be published. Still, some manufacturers use letters and numbers instead. What is the fastest way to harden salt dough? It is not advisable and probably against code to have two units running on the same disconnect. If the AC unit is used for 8 hours per day, then it costs $1.12 per day. Using a 30-amp breaker, 80% of the amps are 24 running amps. What kind of wire do I need for a mini split? 3 Ton Quad-Zone Mini Split AC - Heat Pump: With a 36000 BTU total Cooling-Heating Capacity, this ductless split system can cool and heat 4 separate 350 sq.3 TON Quad-Zone AC - Heat Pump (9k x 4) how many watts and amps does a 12000btu mini-spit AC use? Hathaspace Smart True HEPA Air Purifier Reviews, 4+6 Best Whole-House Dehumidifiers (Ducted, Portable), 4 Quietest Dehumidifiers (Best Bedroom Dehumidifiers): 52.1 dB Or Lower, How Long Do AC Units Last? I got 1 20 amp circuit in the main panel. This tells us that the hypothetical 24,000 BTU heat pump has a cooling capacity of 2 tons. The voltage will affect how you install the mini split unit. Connect the 3 main wires along with the ground to their respective terminals. An 18,000 BTU air conditioner is capable of drawing about 8 Amps of power. Here you use the basic electrical power equation: P = IV; in unit terms, this is Amps = Watts / Volts. A larger 12,000 BTU unit draws between 9 and 13 amps. This Friedrich multi-zone unit has connections for 4 units, all of which are numbered for easy cross-referencing to the indoor unit. For this, you need to use the following equation: The BTUs of the mini split should be clear when purchasing the unit, and the energy efficiency rating will be included in the specifications. Smaller and more efficient air conditioners require an average of 318 watts per hour. Anything that runs on amps must have a circuit to prevent amp overload. 1. How many square feet does a 1 ton mini split cool? For mobile applications like RVs and boats, power receptacles have ratings in amps, 50Amp, 30Amp, 20Amp. The watt (W) is a unit of power. It is also critical to make sure that each indoor unit on a multi-zone system is wired to the same input that its line set is connected to. The average labor cost to install ductless air conditioning is $500 to $2,000.Dec 7, 2020 READ How much does a skip tracer make? Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. )? That is about 110 to 120 volts on the low end and 208 to 240 volts on the higher end. Tankless Water Heater Breaker Size Calculator: What Size Breaker? Is it ok to run 12/3 solid core wire with a double pole 15 amp from the breaker box to the disconnect, then run 14/3 stranded from the disconnect to outside and inside unit. 3. The ground is very critical and a dedicated ground wire must be used on every fan coil or head. Depending on whether you are installing a. , you will have a different number of connections. The installation manual will say what is required. Is 20 to much ? I want to install a mini-split system for cooling in my house to supplement the existing central AC which doesnt work well on the top floor due to a lot of glass and a lot of sunshine. Most of the time, youll find a window unit set in a window opening and plugged into a regular 110V/120V outlet. It runs on 1,210 watts on 220V and, Senville SENA-48HF-MOQ dual-zone mini split has a combined cooling capacity of 48,000 BTU (4-ton unit). Let us break it down for you before we go any further. Some manufacturers include this for both US and Canada. I need a dual zone mini split unit the is only 115 volts. Be the first to rate this post. How Many Amps Are Required For Ductless Mini Split Systems? A larger 12,000 BTU unit draws between 9 and 13 amps. There are hundreds of A/C products on the market, and not all of them are worth your time and money. What size break will I need on my 10-2 wire for a 230V mini split. 100-500 Sq. Voltage or volts is another measurement of electrical charge, but where amps measure the volume of electrons, volts measure the pressure that allows amps to flow. Below well take a closer look at the different types of ACs, and heat pumps to help you choose the correct breaker and wire size. Most mini splits only require power to the outdoor unit. In both calculators, we presume you are using a 220V circuit and 12 EER rated mini split: Here is the 2nd Calculator where you start with the mini split tonnage: Basically, you just input BTU or tons, and you will get the amps such a mini split draws. BTUs are used to indicate the area a mini split can cover. Do most installs of 4 indoor units draw their power off the outside unit (vs. making a separate electric run to the main breaker box. I am installing a 30k btu lg air mini split with an 18k cieling cassette and a 12k wall unit. This is the smallest 6,000 BTU vs the biggest 6-ton mini split. Typically, you will need between 15 and 45 amps per mini split. Single Zone Mini Split ACs: 1 Ton or 12,000 BTU. How many amps does a 24 000 BTU Mini Split use? So a 14-gauge wire is medium sized, 12-gauge would be a little bigger, and 10-gauge is the biggest wire youre probably going to need for a mini-split. I had an electrician come in and make the run to code which required the wiring to be spliced because of the run. While installing a lower amp breaker usually doesnt present a safety issue, it will cause the breaker to trip nearly constantly. If you are like me and despise doing math on your own to find out what breaker size you will need for your heat pump, the first place you want to check out is the data tag. What size breaker do I need for a 27000 BTU Mini Split? Can you run the wires from the outdoor unit to the indoor unit in the same conduit on a commercial job without causing any problems as long as all the wires are rated the same voltage. 14 Culprits To Check For Now, MMBTU To MMSCFD Calculator For Natural Gas + Chart, 8 Best Infrared Heaters For Indoors, Patios, Garages (With ECO Thermostats), AGM Battery Voltage Charts: 12V, 24V Deep Cycle Battery Voltage, Lead-Acid Battery Voltage Chart For 6V, 12V, 24V, 48V Batteries, Natural Gas MMSCFD To MMBTU/Day Calculator + Chart, Mitsubishi MZ-HM12NA mini split has a cooling capacity of 12,000 BTU (1-ton unit). Some manufacturers provide minimum wire and breaker sizes, while others offer the maximum fuse or breaker size you can use. In other words, the wire is slightly larger than the electrical current rating. In the US, typically, mini splits up to 18000 are 110V, and over that are 220V. Just want to make sure I dont cause an issue by flipping the switch. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'homeinspectioninsider_com-medrectangle-3','ezslot_3',835,'0','0'])};__ez_fad_position('div-gpt-ad-homeinspectioninsider_com-medrectangle-3-0'); Depending on the size wire, youll need to find the breakers size, which gives you the specific rating. Running Load Amperage, or RLA for Short. Any negatives of going this route vs 240? (State-By-State Chart), How To Convert Therms To kWh? This will impact the amps needed for it to operate. Simply multiply your amps figure by the voltage. Larger mini-split systems and central air conditioners or heat pumps utilize much larger breakers, so make sure to use an appropriately smaller wire gauge. You can often find exact requirements for breaker size printed on your mini-split compressor unit. A regular heat pump requires two dedicated branch circuits: the condensing or AC unit and the air handler. Luckily, you can find this out pretty quickly with all of the above information and by looking at a label on your compressor unit. Ft. 750-1000 Sq. (an electrical whip is simply a pre-done version of this.). (If understood correctly 12/2 is the one because you do not use the neutral wire) -thanks. A small window unit rated at 5,000 BTUs has a current draw of about 4 to 6 amps. The out side unit specifies , max breaker size at 20 amps. Next, determine how many watts the AC uses by dividing 36,000 BTUs/hour by 3.41 (1 watt = 3.41 BTUs per hour). The ES-55Z-M5/ACIQ-12CC-H 55,000 BTU 21.3 SEER2 ACiQ 3-Zone Ceiling Cassette Mini Split System - 12+18+24 | HVACDirect.com Related Article What To Do If AC Keeps Tripping The Breaker. Below, we will go over each of those nine different categories and explain their importance to you and why you would need to have that information on hand in the first place. When wiring them, its crucially important to get things right for safety reasons and to reduce the number of electrical problems youll have down the road. If you have your average 240 volts 2 kW air handler, you will need a 30 amp breaker and a #10 electrical wire. You can also use a mini split calculator to get an estimate of its power usage. 8 What kind of wire to use for mini split? The distance from the panel to the outside disconnect box is approximately 70 ft the specs for the unit says 20 Amps max , 220 Volts. Maximum Amp Circuit Breaker or Fuse Size, Circuit Breaker Requirements Based On Unit Tonnage, Breaker Sizes for Different Size AC and Heat Pump Units, Mini-Split Air Conditioners and Heat Pumps, Air Conditioner and Heat Pump Electrical Wiring Requirements, How to Find Your AC or Heat Pumps Ideal Breaker and Wire Size. A 36000 BTU mini split with an energy efficiency rating of 8 instead of 12 would need 37.5 amps, a much higher draw that would impact your energy bills. We have helped countless customers shop for high-quality items -- from air conditioners, to heating units, to water heaters, and more -- and have set up this blog as an extension of our commitment to helping homeowners become informed of the things that matter to them. They use 220 volts capacity to deliver between 1,848 and 2,823 watts of current. Now that you know a little about wiring air conditioners and heat pumps using the correct size wire and circuit breaker, youre probably wondering: What if I dont do it right? This question is a valid concern for many amateurs working on their homes electrical, so lets take a look. In short, having a high energy-efficiency air conditioner with a high EER rating pays off. There are a wide variety of air conditioners and heat pumps on the market, so it should come as no surprise that there are many variables to consider when choosing a breaker size for your unit. Do I need to buy a transformer? Because most mini splits operate on a 220V circuit, we have the voltage. Are cassettes sufficiently sealed / fire rated such that you can pile 32 of blown in fiberglass insulation directly on top of them without heat or fire issues? How many amps does a 12000 BTU Mini Split? You can check the accuracy of the amperage value by dividing the input Watts by the product's Voltage (2665W / 230V), based on the formula I = P / V or A = W / V. If You Really Need to Do the Math If you do calculations, it's possible to look for the EER and voltage of your appliance in the manual. 6 amps. What Wire Size and Breaker for Heat Pump? Formula to calculate amps. All mini splits require a dedicated circuit. As you can see from the table above, this is where it pays in the long run to get a more energy efficient mini split. However, we can estimate the approximate amperage based on the power (in watts) and the voltage of the unit. Do you need 200 amp service for a mini split? Double-pole circuit breakers often look like two single-pole breakers fused. The amperage rating of 24,000 BTU air conditioners falls between the range of 8.4 amps to 12.7 amps. 15 amps 120 volts = 1800 watts; 20 amps 120 volts = 2400 watts A 20 amp outlet isn't enough to power and run an RV air conditioner. How many amps does an 18, 000 BTU air conditioner use? We can determine the size of your heat pump from the model number. Subsequently, you can use a 15 amp circuit breaker for most mini-splits, though you may need a 20 amp breaker for some of the larger units. Youll need between 10 and 45 amps, but this will depend on the specifications of the unit. The wiring is not strong enough to handle the added current and can be a severe fire hazard. A higher gauge wire that cannot handle the supplied current is a significant fire hazard. In that case, this is a safety hazard. Copyright 2023 Total Home Supply. A double pole breaker can handle two 120V circuits, but you use them more often for a single 220V circuit. But my question is, what wire do I need to run from the main panel to the outdoor box since Im installing 2 multi split systems? Save my name, email, and website in this browser for the next time I comment. In this case, you should use a 50 amp breaker because it is the next step above the minimum ampacity but still below the maximum ampacity. * Voltage depends on the system. Were here to break down why and to help you choose the unit that will best fit your budget, room size and needs. How many Watts Does a mini split system use? For a single mini split, you wont need 200 amps, and you can make do with much less. The vast majority of mini splits require 208/240 volts. A 10/2 wire has two connectors, the black and white, both hot/lead wires as well as a ground wire. Do AC Units & Heat Pumps Need 240 Volt Breakers? The table below gives a breakdown of the amps needed for different sized mini splits. The above table is by no means a definitive guide to which wire gauge you should use, but it is a good rule of thumb. 1 A BTU is equivalent to about 1/100th of a watt. On the other hand, 10/3 wires have three connectors, black, white and red plus a ground wire. Different-sized heat pumps generally will provide you with varying amounts of amps used. The whip must be wired into the shutoff box and then to the unit as we will talk about next. 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. This is the much more straightforward way of determining the amps needed, but you will need to know the wattage. How many amp hours does an air conditioner use? A one-ton unit with one outdoor and one indoor component at 21 SEER rating runs $1,000 to $4,000 depending on the brand and type of indoor mount. We have two Mitsubishi Mr. 3 Ton Quad-Zone Mini Split AC Heat Pump: With a 36000 BTU total Cooling-Heating Capacity, this ductless split system can cool and heat 4 separate 350 sq.3 TON Quad-Zone AC Heat Pump (9k x 4). You determine the number of watts a mini split uses by multiplying these two factors together. I am going to wire a 10/2 from panel to disconnect to outside unit, do I need another wire to supply power to the indoor units or will it recieve all the power from the outside? Typically 9k btu and 12k btu units are 110V. An ammeter is a measuring instrument used to measure the current in a circuit. Making its grand appearance next would be the model number, which thankfully is made more evident than some other more reclusive bits of information we will go over. A ductless mini-split air conditioning system costs $2,000 to $14,500 with an average of $3,000 for a 12,000 BTUs system. NEC 310.16 Table: Copper And Aluminum Wire Ampacity Chart, NEC 310.12 Table: Wire Sizes For 100-400 Amp Services (83% Rule), kWh To Therms Calculator + Conversion Chart (1 kWh = 0.03412 Therms), MMBTU To Therms Calculator + Chart (1 MMBTU = 10 Therms), Therms To MMBTU Calculator + Chart (1 Therm = 1/10 MMBTU), AWG To Circular Mils Chart (For 4/0 AWG To 20 AWG). 12000 BTU; 18000 BTU; 24000 BTU; 28000 BTU; 36000 BTU; 48000 BTU; View All; Shop By Room Size . Ductless Mini Split AC Installation: How to Install, DIY + Placement, Ductless Mini Split Sizing Guide: Heat Load & BTU Calculator, Mini Split Failures, Problems & Troubleshooting Guide. Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. An electrical whip is a premade, outdoor grade wire set that is intended to run from a shutoff box to the unit being installed. Hi, I am installing a Split Duct unit in my house can I install the outdoor unit on the exterior wall above the height of the indoor unit ? Table: How Many Amps Do Window, Portable, Mini-Split Air Conditioners Draw. Peak wattage varies on factors like the room size youre heating or cooling in cubic feet. Here is how we calculate the amps required to power the unit: I (in Amps) = 5,000 BTU / (10 x 115V) = 4.35 Amps The higher the energy-efficiency of the air conditioner, the fewer amps it will draw. Below is a quick reference table to help you decide what wire gauge is best for your situation based on your circuit breaker size:Breaker Size (Amps)Aluminum Wire Size (AWG)Copper Wire Size (AWG)15#12#1420#10#1230#8#1040#6#850#6#860#4#6. What If You Dont Use the Correct Size Breaker or Wire? Smaller window units can run on 120V, so you could put one on a single-pole breaker using only one of the hot wire slots. If not can the blower motor be switched with a 115V blower motor? Ft. 500-750 Sq. You'd want to remove the thousands portion of the number and remember that every 12,000 BTU of cooling capacity equals precisely 1 ton. Depending on the BTU capacity amp requirements can range from 15 to 45 amps. You can also throw unnecessary costs into the equation even more to the point. The number of amps you need will be influenced by the overall BTUs of your mini split and how many zones you want it to cover. Outside The Box 1.16K subscribers Subscribe 29K views 4 years ago in this video , we use a power consumption meter to measure. Founded by Hubert Miles, Certified Master Inspector. Example: Lets say we want to find out how many amps does a 3-ton mini split uses. Or, if you have a 3600-watt appliance and it is running on a 240-volt circuit, then the formula would be 3600 watts / 240 volts = 15 amps. The main electric panel contains two different amp breakers; one for the indoor unit and the other for the heat pump condenser or air conditioner. I have 10-2 w/gnd wired to outdoor disconnect box, which means I would wire the whips ground and neutral to the supply ground wire in the disconnect box. Are the indoor units just basically low current devices small fans & condensate pumps (no electrical heating elements, etc. Most brands require 14/4. Thank you. It is recommended to use 14 gauge stranded wire for installation. How many amps does it take to run a mini split? In the United States, ductless mini split systems come in either 110V or 220V. The two most common choices are fuses or circuit breakers. The higher the BTU, the greater the coverage and the more amps needed. You need to make sure you have the right size circuit breaker for mini splits. Mini-Split Heat Pumps and Electricity Bills. (Window, Portable, Mini-Split, Central), Senville Mini Split Reviews: Best 4 Units Compared & Rated, Ductless Mini Split Vs Central Air AC: Which Is Better? We use it to cool our hours for 8 hours. So would that be the only way the unit didnt turn onsomeone had to have flipped the breaker? air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. Finally, we come around to some static (no pun intended) consistent information, this indicates the maximum rating amount of electricity your amp circuit breaker can handle before tripping, and this number is always precisely double the amount of your RLA. When your manufacturer makes the heat pump, it can very well be handed to you on a silver platter without going through the tedious process of decoding those two seemingly random numbers in the serial number we discussed. Using a lower gauge wire over a higher one is better because it can handle more current than necessary and keeps things running smoothly. Depending on the BTU and energy rating, a 5- zone mini split may need up to 200 amps to operate. My questions is that 20 amp circuit gtoing to power both inside and outside unit or do I have to have two different circuits, one for inside unit and one for outside unit? Wattage is the combination of voltage and amps. 7. A split heat pump or air conditioner has two separate electrical circuits, one for the outdoor unit (condenser) and the indoor unit (air handler or furnace). Each summer we help thousands of people find the best room air conditioners and heaters for their needs. If youre ever unsure, avoid caution and use a larger wire gauge than you think you need to be on the safe side. Are there any mini split systems that do not require electrical from outdoor to indoor unit? 2. Learn more, After a HVAC Quote - Call a Licensed Technician. As you can see from the table above, a 12,000 BTU air conditioner can use 1500W (8 EER rating) or 1000W (12 EER rating). It should be kept in the off position while you continue to work on the unit. Total Home Supply offer Honeywell 14/4 Mini Split wire in 50 ft and 250 ft rolls. The exact details of a connection like this are specific to your unit. 4 amps, a 24,000 BTU model requires 25. Please help anyone who might know. Wire Size Guide: What Size Wire Do I Need? 15 Amp Outlet On 20 Amp Circuit: Can You Do That? Then, wiring is run from the outdoor unit to the indoor unit. Amps or amperage are a unit used to measure electricity. ft)Breaker Size (Amps)14-812,000500-600151.56-1218,000750-9001528-1624,0001,000-1,20015-202.510-2030,0001,250-1,50020-30312-2436,0001,500-1,80020-303.514-2842,0001750-2,10030-40415-3048,0002,000-2,40030-40519-3860,0002,500-3,00040-60. This would cause your circuit breaker to trip and your power to go out. It is recommended to use 14 gauge stranded wire for installation. Window units are some of the smallest air conditioners and heat pumps you can buy, excluding portable units. The exact breaker size you need primarily depends on your air conditioner, so check the requirements usually printed on the compressor unit or consult the table above. (1000-3000+ Sq Ft Homes), Thermostat Says Heat On But No Heat? . ), OK to run 4 on a single run of 14/2 wire ? The best thing to do is read the specifications and instructions for your mini split, as this will show the maximum circuit breaker amperage. However, Id still recommend the 8-gauge wire. The system i have is 18000 btu heat and AC. (std. Running the air conditioner for one month will cost around $33.60. Total Home Supply offer Honeywell 14/4 Mini Split wire in 50 ft and 250 ft rolls. Otherwise, the system will not operate correctly. For a 35-amp breaker, the running amps should be around a maximum of 28 amps. Generally, a mini split that has a BTU rating of 36000 typically requires around 30 amps when working with a 220-volt power and around 15 amps when working . This offers a couple of enormous benefits for people who choose ductless heat pumps over gas heating. What do 10/2 and 10/3 wire numbers mean? For a standard 3-ton residential air conditioner or heat pump, youll need a 20 amp breaker with 12-gauge wire. As we mentioned previously, it truly depends on the heat pump size. 3 How many amps does a 9000 BTU Mini Split draw? If you picture a river, the voltage is the angle or steepness of the river, whereas the amperage is the volume of water. The maximum load the 25-amp circuit breaker can handle is 31.25 amps (125% of the breaker amperage), which is likely to trip the breaker frequently. Equally important as choosing the correct breaker for your air conditioner or heat pump is choosing the correct wire gauge.