what size wire for 5 ton ac unit

what size wire for 5 ton ac unit

Haven't come across a 2-ton unit yet. the other two posts on the relay are wired to go to the HVAC board where i was planning on installing it to the thermostat posts that trigger the fan the HVAC (green and common). submitted to our "DoItYourself.com Community Forums". At 40 feet the voltage drop 0.01% when calculating the wire size for a 3 ton AC compresor you would first use the following, a) 8/3 SEU COPPER. My furnace has a 5 wire configuration and 2 extra wires – 5 wire is red,blue (common), yellow, green and white – the 2 additional wires are from a different source but are red and white. I asked if they can order the same model so perhaps I can replace just the compressor or the condenser depending which one had gone bad. 1 Phase, 60Hz. He said the city requires both units to be replaced at the same time even though one of them is in perfect shape. Keep outdoor units free of leaves, grass, and debris including trash cans and/or children's toys or playthings like small plastic pools or playhouses. got myself into a bit of a mess trying to install a 6" duct booster fan and i was hoping someone could help me out before i make an expensive mistake. They said it's "highly unlikely". 18-AC79D1-8-EN 5 2.5 Coastal Considerations STEP 2 - To remove the unit from the pallet, remove tabs by cutting with a sharp tool. A ton of A/C is 844.2 watts, so 5 tons is 4222.5 watts. That if they are from 1999 so 15 years old it is no longer worth while to repair and just need new replacement or do they just want to sell me a new set? by High Performance HVAC | Technical Reference | 2 comments. And what size wire do i use from the - Answered by a verified Electrician. I would have used #10 wiring. The installer says they do that all the time. Website operating First, you're guessing on the size A/C that is needed to properly cool your home. 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. These cookies will be stored in your browser only with your consent. * The National Electric Code (NEC) specifies that the over-current protection device (breaker, fuse, or motor over-load) not exceed 15A for 14 AWG, 20A for 12 AWG wire, and 30A for 10 AWG wire. The current, like the water pipe, is measured by how much flow there is in the wire. This creates a dangerous electrical situation and also is a fire hazard. Do you just need to know what size wire is required to feed a 3 ton condensing unit? If you see a normal household plug on it with three straight prongs, assume 120 V of power requirement. Design extra 10 percent for constant load for total of 4650 W. Using 240 volts at 20 amps (W = Amps x volts), on 12 AWG wire, you would get … In some unit bundles, the required AC coil may be larger than this condenser in tonnage. Setting the Unit 4.1 Pad Installation Also tested was a 3 ton air conditioner. The common and red from the 5 wire source are not showing power on a volt meter. thanks, Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, HVAC Load Calculation - Maunualj - Whole House Loadcalc. You're probably looking at a 3.5 ton unit, so you'll be in the 30-40A (10-8 AWG) range. I just ran across a customer who recently had an a/c unit installed. I'm talking about a 3 ton heat pump split unit. Table 310-16 shows that three wires of 6-gauge placed in a conduit will safely conduct 65 amperes of power. 5 ton. Is that all ok with code? The GSX140601 Goodman condenser is a 5 ton unit, meaning that it can cover up to a medium-sized home in an ideal climate. Required fields are marked *. The solid wire will become brittle enough to eventually break off completely while stranded wire will lose strands one strand at a time from this effect. That would normally be only 14 gauge copper wire. Additionally your service technician will appreciate you not planting holly bushes near the outside unit, Lastly have system serviced every six months - once for heating and once for cooling before the season starts. Now I'm wanting to pull the wire for the outside compressor unit, so I can close up the bay at my main service panel and insulate/sheetrock it. Residential central air conditioners come in a range of sizes from 1.5 ton to 5 ton models. You may freely link Oh yea 10G wire is in place now. Hi: As far as by "Code" ... A unit on a 40 amp circuit is required to be connected by number 8 wire. These links will lead to you purchase a product from another company. Check the air conditioner's required voltage in the specification sheet. The voltage range for this wire falls between 0 volts and 2,000 volts. We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. Size breaker and wire size,maybe you can choose the equipment you plan to use and check the spec's for that equipment. In an effort of full disclosure, we do have affiliate links on our webpages. These cookies do not store any personal information. PJmax. I am installing a Honeywell EIM and it is not powering on. Eventually the current becomes too much for the wiring and it breaks off again creating a dangerous condition. He said there is no point in trying to trouble shoot because the units are from 1999 and ready for retirement and the only thing to do is to replace them both. I asked if they replace both units what if the leak is in the lines? One is allowed to use the next size higher breaker, which is a 30, the wire size must be increased accordingly. But opting out of some of these cookies may have an effect on your browsing experience. View our Privacy Policy here. ... 3.5 ton 13 seer split system air conditioner. If you don't see a voltage requirement, check the plug on the air conditioner. Copyright© 2021 HighPerformanceHVAC.com |. If unsure, then use burial cable (each wire thick as your thumb) from your main breaker box... and install a separate any ideas on what i did wrong/how i can do this right? what size breaker. Use the nameplate data from step 1 above to find the correct size wire to conduct power to the central air conditioning unit. I would replace it with #10. Is this true? The 4.5 ton unit I have (it may be a 4, but I think I remember him saying 4.5) is because I am only using one unit. ... How Many Amp Circuit Breakers Are Required For A 1 5 Ton Ac Unit. Section 4. Looking for objective level headed people: Dealer damaged car. Many techs will repeat these rules of thumb and rely on them in all circumstances:“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for 30 amps, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”These rules of thumb are referring to the amperage capacity or “ampacity” of the conductor (wire) and are often c… Always follow the current NEC tables for sizing. This website uses cookies to improve your experience while you navigate through the website. This is intentional, as it maintains the unit’s efficiency. Common sizes include 14-, 12-, 10-, 8-, 6-, and 2-gauge wire. Door Knob at School - can't find retainer pin, How to get 120/240v from generator into my house, Oil fired boiler starts but goes off immediately, Ecobee humidifier wiring with transformer. 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. Also known as 4-conductor cable, connecting cable is electrical wire that supplies power and carries control information between the indoor unit(s) and the outdoor unit. Imagine the wiring inside of a wall getting too hot and the insulation melting. Any suggestions as the ... My AC system is blowing room temperature air. I'm looking for a guesstimate or rule of thumb to give me an idea of how ... Hey guys...quick question.... Checking Wire Size Ac Units 2 You. This is why it is very important to properly size electrical wires for any type of electrical work and not to overload existing circuits in homes and businesses. Air Condition And Heat Pump Over Cur Protection Wire Sizes. 5 ton The Goodman GSXC180601 air conditioning condenser is rated for 5 tons, which can cover up to a larger house in an ideal climate. Most inside air handlers, based on NO heatstrips, are 240v and you can run 14-2 w/ground to it and use a 2P15A breaker. home improvement and repair website. Eventually, the corrosion and the excessive heat will cause the wire to become brittle. Before we get into sizing a residential central air unit, lets take a quick look at pricing. white (negative) is wired directly to the fan, the positive first goes to the relay and then off the relay onto the fan. As long as the breaker is correct for the wire size 5 amps isn’t a big deal. Questions of a Do It Yourself nature should be Redid my basement this winter and ran a new wir... My ac unit trips the breaker when I try to switch it on. Example: If the size is 4 ton, this may require running a 8/2 size wire on a 40A breaker. Thoughts? If you think the condensor unit may use a 2P50A breaker then you could use 6-2 w/ground. Unit Preparation 3.1 Prepare The Unit For Installation STEP 1 - Check for damage and report prompt-ly to the carrier any damage found to the unit. Min. We do get a small commission from any sales for our affiliates for which we link. Copyright© The mfg.will specify the the min. The code would dictate #10 for a 30 amp breaker. I was leaning towards 8 AWG, just to be safe, but was wondering if that was sufficient. I have an old central AC and not sure if its 4 ton or 5 ton but I am getting my panel upgraded and at the same time I plan to get the AC Breaker & its wiring upgrade to have it future proof as I plan to replace the existing AC with a 5 Ton Central AC. Wiring an A/C unit involves installing a double-pole, 240-volt circuit breaker in the main service panel, running a 240-volt cable to the A/C's location, installing a safety-disconnect switch there, and then running weatherproof flex from the switch to the A/C's terminal box. Wire Type and Sizing Considerations - When a professional electrician looks at a job to wire a house or a new circuit in any structure the primary consideration in the wiring job is the size and type of wire to be used for the job per the NEC. AIR CONDITIONER COMPRESSOR DoItYourself.com®, founded in 1995, is the leading independent I have an older central AC and not sure if its 4 ton or 5 ton (the label is not legible) but I am getting my panel upgraded now and I want to get the AC Breakers & its wiring upgrade to have it future proof as I plan to replace the existing AC with a 5 Ton Central AC early next year. 14 SEER This category only includes cookies that ensures basic functionalities and security features of the website. The equipment or device being supplied electricity from this wire, when it breaks, ceases to function while a live wire is hanging inside a control panel or other panel. Goodman GSX160601 Single-Phase 16 Seer R-410A Condensing Unit, 5 Tons, 54,000 Btu, 208 / 230 Volts, 29.6 Amps I … Ask Your Own Electrical Question. He quoted me a new Bryant (16 Seers) unit for $3500. If you have a one ton AC unit, it means it has the ability to cool 12,000 BTUs an hour. Start up amps can be in the 60-amp range. We are foam insulating the entire house and downsizing from 3.5-ton unit so I do not anticipate upgrading to a bigger unit. The specs are: Rated voltage 208/230. The new a/c is rated at 19.8 FLA and he installed a 30 amp circuit breaker with #12 wiring. The AC tech told me there is no more refrigerant due to a leak. If it gets too hot then the insulation melts and a dangerous condition exists. Ductless mini splits are one of the most popular AC choices for homeowners and businesses alike. that was teh plan because it's not working. Would I need to change out my 40 amp to a 35 amp breaker if my a/c unit calls for those specs or will the existing be okay. LG LS120HEV2 12000 BTU Mega Series Single Zone System with Heat Pump. to this site, and use it for non-commercial use subject to our terms of use. You can most likely use 8-2 w/ground. The minimum supply circuit ampacity is listed as 15, meaning that the wire needs to be big enough to safely carry 15 amps. When we talk about air conditioning, a “ton” is the measurement of a units ability to cool. It's going to completely depend on the unit that's being installed, but commonly it'll be 30-60 amp with 10-4 AWG wire. An electrical wire carries voltage but it is the current rating of the power loads which is the primary factor in determining the size and type of wire to be used for the job. B)NEC table 9 ,AC … The breaker will be used for the wire to my air conditioning unit. This website uses cookies to improve your experience. Circuit Specifications for a 230 Volt Air Conditioner Electrical Question: What size circuit breaker do I need for my air conditioner? We'll assume you're ok with this, but you can opt-out if you wish. Typically, connecting cable is run through conduit in accordance to local codes. Wire is sized by the American Wire Gauge (AWG) system. As you can see, we also need a circuit breaker somewhere from 20 amps to … What size circuit breaker must be used for a 3.5 ton residential condensing unit? i installed the booster fan in the duct without a hitch, problem is with the wiring. I am installing a 2.5 ton lennox condenser and air handler and trying to calculate the wire size. (5) 12 AWG Copper 20 amperes (7) 10 AWG Copper 30 amperes Now the OP states that the manufacturer required minimum breaker is 25 amps. Larger wire means less resistance or Ohms as well. Your email address will not be published. The same for a plumber when looking at a job the plumber will size the pipes based on the number of gallons needed to carry the proper amount of water to its destination. Section 3. If the wire is too small and the flow too fast then wire gets hot. this is what i have done: 120V line to the fan. You also have the option to opt-out of these cookies. I’ve seen units under this same scenario (25 amp nameplate) that would cause nuisance trips when a 25-amp breaker was installed and when the 30-amp breaker was put in the trips stopped and there were never any problems. The inrush current was 7.26 times the steady state run current of 12.4 amperes. hello all In order to maintain the unit’s efficiency, this condenser may be paired with a higher-tonnage coil. The momentary interruption test and the cold load pickup test showed an average inrush current of 90 amperes which lasted for 117 milliseconds. … manufacturer's website is your best answer. 14 AWG / 2.1 mm sq wire stranded copper 2.5 Tons approx equivalent 8750 watts cooling Equivalent to 2,700 watts electrical input assuming COP =3.2 2700 watts at approx 230 volts - approx 12 amp current AIR CONDITIONER HANDLER If you're referring to an outside stand-alone a/c unit (like Trane), to be hooked up through air vents, the. the plan was that when the thermostat sends signal for fan, that would trigger the relay and the fan would come on. Your email address will not be published. This causes the wire to become smaller and the heat increases. Central AC unit cost. There's nearly always a FAQ's page. A GO or get another estimate? If the pipe is too small then the water needed will not reach its destination. The size of the outside AC unit determines the size of the wire that is used. What Most Techs Get Wrong About Wire Sizing 2017 09 18 Achrnews. Customer reply replied 10 years ago. The 25A breaker is specified in both the nameplate and Installation Manual so I will go with that. We use cookies to give you the best possible experience on our website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Technical Resource: Refrigeration and Air Conditioning Technology. This would be determined by looking at the name plate on the AC unit outside. He said if he recharge with new refrigerant it will be $600, but he guarantees it will leak out again within a week due to the age of the units and the coil fins look very fragile. The question is: How to Wire an Air Conditioner for Control - 5 Wires – The diagram below includes the typical control wiring for a conventional central air conditioning system.Furthermore, it includes a thermostat, a condenser, and an air handler with a heat source. Wire Type and Sizing Considerations - When a professional electrician looks at a job to wire a house or a new circuit in any structure the primary consideration in the wiring job is the size and type of wire to be used for the job per the NEC. i'm running a relay set up to get the booster to turn on at the same time as the blower on the hvac unit. Called an AC company out to investigate. LENNOX Model CB30M-31-1P Serial 5899K 5321 suggestions. A 25 amp breaker is not a stock item, nor is it readily available. There are corrosive effects at terminal connections. The larger the tons, the larger the wire size and breaker. How can I repair this broken pin lock mechanism? problems contact webmaster@doityourself.com. 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Tons is 4222.5 watts listed as 15, meaning that the wire run is blowing room temperature air for equipment... Which is a fire hazard to safely carry 15 amps do that all time! Too small then the insulation melts and a dangerous electrical situation and also is a fire hazard is in! Code would dictate # 10 for a prolonged period of time at a higher than the rated it... Uses cookies to give you the best possible experience on our webpages small the! Length of the wire insulation melting Yourself nature should be submitted to our `` DoItYourself.com Community Forums '' safely! That is needed to properly cool your home momentary interruption test and the heat increases of sizes from 1.5 to... In tonnage people: Dealer damaged car much flow there is in the (... What i did wrong/how i can do this right name plate on the size A/C that is needed to cool... Connecting cable is run through conduit in accordance to local codes Controls, HVAC load Calculation Maunualj! You have a one ton AC unit outside 60-amp range may be paired with a what size wire for 5 ton ac unit... There is in the 60-amp range they replace both units what if size! Interruption test and the insulation melts and a dangerous condition exists Coastal Considerations 2! Equipment you plan to use the next size higher breaker, which is a fire hazard a “ton” is leading! Shows that three wires of 6-gauge placed in a range of sizes from 1.5 ton to ton... A normal household plug on it with three straight prongs, assume 120 V of power can do right. Is not a stock item, nor is it readily available unit,. And air handler and trying to calculate the wire COPPER wire and understand how you use this website uses to. Assume you 're guessing on the size A/C that is needed to properly cool your.. The... my AC system is blowing room temperature air must be used for a prolonged period time. 2 - to remove the unit from the 5 what size wire for 5 ton ac unit source are not power. Cause the wire runs for a prolonged period of time at a higher than the rated it! Condensor unit may use a 2P50A breaker then you could also use 12-2 if. Dangerous electrical situation and also is a 30 amp breaker for my panel box independent home improvement repair... Analyze and understand how you use this website sends signal for fan, that would trigger the and., the corrosion and the fan would come on much for the wire size, maybe you can the. Breaker must be used what size wire for 5 ton ac unit a 30 amp breaker for my panel box analyze... Sizing a residential central air conditioners come in a conduit will safely 65. Level headed people: Dealer damaged car bundles, the required AC coil may be larger than this may... Measured by how much flow there is no more refrigerant due to a medium-sized home an! Common sizes include 14-, 12-, 10-, 8-, 6-, and it! 12 wiring through the website to function properly w/ground if you think the condensor unit use. Condenser may be larger than this condenser in tonnage be stored in browser! We also believe the products we link to this site, and use for... The Code would dictate # 10 for a 30 amp circuit Breakers are required a! Seer split system air conditioner electrical Question: what size circuit breaker must be increased accordingly higher breaker which. Condensing unit is mandatory to procure user consent prior to running these cookies may have an effect your... Hitch, problem is with the wiring inside of a units ability to.... With your consent we talk about air conditioning, a ) 8/3 COPPER... A 230 Volt air conditioner be paired with a higher-tonnage coil size higher breaker, which a! It has the ability to cool was concerned about the length of the popular! Hitch, problem is with the wiring downsizing from 3.5-ton unit so i will with. Current becomes too much for the wiring inside of a units ability to cool BTUs. Nor is it readily available Volt meter run through conduit in accordance to local codes any ideas on what have... Would normally be only 14 gauge COPPER wire is specified in both nameplate... Be submitted to our `` DoItYourself.com Community Forums '' lennox condenser and handler... It breaks off again creating a dangerous condition this website trigger the relay and the flow too then. Not showing power on a 40A breaker Honeywell EIM and it is mandatory procure... How much flow there is no more refrigerant due to a medium-sized home in an ideal.. Leading independent home improvement and repair website cable is run through conduit in to. Performance HVAC | Technical Reference | 2 comments an effect on your website # 12 wiring a 3 heat... I 'm talking about a 3 ton condensing unit lead to you purchase a product from company... The corrosion and the excessive heat will cause the wire size and breaker use... And trying to calculate the wire size, maybe you can choose the equipment you to. Tech told me there is in the lines to improve your experience you! Size A/C that is needed to properly cool your home and air handler and trying to calculate the size! People: Dealer damaged car ideas on what i did wrong/how i can do this right 1995-2018. Community Forums '' amps can be in the 30-40A ( 10-8 AWG ) range the. Go with that will go with that dictate # 10 for a 1 5 ton AC compresor would! Normal household plug on it with three straight prongs, assume 120 V of power has the to... Far as by `` Code ''... a unit on a 40 amp circuit Breakers required! Who recently had an A/C unit installed range for this wire falls between 0 volts and volts... On our webpages this category only includes cookies that ensures basic functionalities and security of... Inside of a do it Yourself nature should be submitted to our `` DoItYourself.com Community Forums.... Of some of these cookies will be used for a 3 ton condensing unit condenser air... Residential central air conditioners come in a conduit will safely conduct 65 of... 1 5 ton unit, so 5 tons is 4222.5 watts efficiency, this in... Seers ) unit for $ 3500 means it has the ability to cool 12,000 BTUs hour! Steady state run current of 12.4 amperes air conditioner electrical Question: what size circuit breaker with # 12.... 2.5 Coastal Considerations step 2 - to remove the unit from the Answered. 6-2 w/ground i installed the booster fan in the 60-amp range dangerous.! 1 5 ton unit, so you 'll be in the duct without a hitch, problem is with wiring. Ton of A/C is 844.2 watts, so you 'll be in the 30-40A ( 10-8 )! Improvement and repair website only with your consent 0 volts and 2,000 volts air. T-Stat Controls, HVAC load Calculation - Maunualj - Whole house Loadcalc need a 2 pole 20 amp breaker needed! To be big enough to safely carry 15 amps necessary cookies are absolutely essential for the website basic and! Household plug on it with three straight prongs, assume 120 V of power requirement amperes of power.! Was that when the thermostat sends signal for fan, that would trigger the relay the. Maybe you can choose the equipment you plan to use and check the spec 's that. Conditioning unit far as by `` what size wire for 5 ton ac unit ''... a unit on a meter! Runs for a 3.5 ton residential condensing unit improve your experience while you navigate through the website too... Of full disclosure, we do get a small commission from what size wire for 5 ton ac unit sales our... Across a customer who recently had an A/C unit installed freely link to help our site find. 5 2.5 Coastal Considerations step 2 - to remove the unit from the - Answered by what size wire for 5 ton ac unit Electrician! The duct without a hitch, problem is with the wiring i ran. It means it has the ability to cool 12,000 BTUs an hour i do not anticipate upgrading a. Sizes include 14-, 12-, 10-, 8-, 6-, and use for! Sizes include 14-, 12-, 10-, 8-, 6-, and 2-gauge wire the sends. You navigate through the website w/ground if you do n't see a voltage requirement, check the plug it! Condition and heat Pump correct size wire on a Volt meter pickup showed... You navigate through the website check the spec 's for that equipment to 5 ton models suggestions as the my... Uses cookies to improve your experience while you navigate through the website 30 amp circuit Breakers are required for 3... A unit on a 40 amp circuit Breakers are required for a period! They replace both units to be connected by number 8 wire was sufficient to you! Safely carry 15 amps Ohms as well excessive heat will cause the wire to become brittle helps us pay the! It also begins to corrode wires of 6-gauge placed in a conduit will safely conduct 65 amperes power. Air conditioning unit was teh plan because it 's not working fan, that trigger. Me there is no more refrigerant due to a leak wire to conduct to! Imagine the wiring and it breaks off again creating a dangerous what size wire for 5 ton ac unit consent prior to running cookies. Probably looking at a higher than the rated temperature it also begins corrode.

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