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You are watching: How many amps does a 3 ton air conditioner use

Is over there a formula because that determining amperage because that A/C condensing systems if the only details you understand is the tonnage? like...1-ton amounts to 12,000 BTU"s = 10 amps2-ton equates to 24,000 BTU"s = 20 amps3-ton equates to 36,000 BTU"s = 30 ampsThis is the way I figure it when the nameplate rating is unknown.
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Is there a formula because that determining amperage because that A/C condensing devices if the only info you understand is the tonnage? like...1-ton equates to 12,000 BTU"s = 10 amps2-ton equates to 24,000 BTU"s = 20 amps3-ton equates to 36,000 BTU"s = 30 ampsThis is the way I number it when the nameplate rating is unknown.
There"s no linear relationship that is all the accurate.Tonnage is a measurement of output. Amperage is a measurement of input. FWIW, my conversion calculator has 1 BTU/hour = 0.2928104185 watts. Of course, that way the unit needs to run 60 minutes because that it to it is in accurate.The carry of one measurement to the other, while walk upwards hand-in-hand, isn"t the accurate. Effectiveness of the unit, age, maintenance, etc. All play a part.Think the converting car horsepower come MPG.

1 horsepower per ton has been a quite decent dominion of ignorance for years for air-cooled condensing units (condenser pan included). Smaller sized units a little more. Larger units, a small less. As with everything else, shot to gain actual dataplate info (or at least a version number, reduced sheet, or submittal) so you can get the real information.
One reason not to give DIY advice:Catch a guy a fish and you deserve to sell it to him.Teach a man to fish and also you�ve damaged a good business opportunity.
A ton is not 12,000 BTU. It is 12,000 BTU/h, so the is a unit the power indistinguishable to about 3517 W. So, in ~ 100% efficiency, a 1-ton, 120 V unit would certainly draw around 29 A.If you know the effectiveness of the unit, friend can get a unstable estimate of present draw.

A ton is not 12,000 BTU. That is 12,000 BTU/h, so that is a unit the power tantamount to around 3517 W. So, in ~ 100% efficiency, a 1-ton, 120 V unit would certainly draw about 29 A.If you recognize the effectiveness of the unit, friend can get a unstable estimate of existing draw.
Uh.... Not really. The compressor does no directly adjust electrical power to cooling tons. That moves warmth from one location to another. The failure is an ext realistically 1200 watts per ton once you consider the effect of the refrigerant, i beg your pardon is wherein the 1 horsepower per ton preeminence of thumb comes from. Think about it.... If you to be right, (and friend aren"t), think about the dimension of the circuit that would be compelled for a 10 or 12 thousands BTU window form air conditioner.
One reason not to provide DIY advice:Catch a male a fish and you deserve to sell it come him.Teach a male to fish and you�ve ruined a an excellent business opportunity.
I assumption: v we are assuming 240 volt solitary phase equipment?Seems we would need a KW every ton factor for it come be advantageous for any voltage or phase.
I assumption: v we room assuming 240 volt single phase equipment?Seems we would require a KW every ton element for it come be beneficial for any voltage or phase.
One factor not to offer DIY advice:Catch a male a fish and also you deserve to sell it to him.Teach a guy to fish and also you�ve destroyed a good business opportunity.
I"m just having this discussion because often time I"ve been told "we"ve acquired a 4-ton unit requirements to it is in wired up" and also that"s all info I acquire until I gain there.
I"m just having actually this discussion because often time I"ve been told "we"ve gained a 4-ton unit demands to be wired up" and also that"s all info I obtain until I gain there.
You"re pretty safe to rough-in wire sized to Table 430.248 for a 4 speech motor. You"ll need to wait for a dataplate to select a breaker, but 99 times out of 100, the engine amp attract chart will occupational if you go with one horsepower per ton. I simply did a 3-ton last week, and also the NEC claims 18.7 because that a 3 horsepower motor. The actual dataplate to be 18.8. Quite darned close.
One reason not to offer DIY advice:Catch a male a fish and you deserve to sell it come him.Teach a guy to fish and you�ve ruined a good business opportunity.
You"re pretty for sure to rough-in wire sized to Table 430.248 for a 4 speech motor. You"ll need to wait for a dataplate to choose a breaker, however 99 times the end of 100, the motor amp draw chart will job-related if friend go v one horsepower every ton. I simply did a 3-ton last week, and also the NEC claims 18.7 for a 3 speech motor. The actual dataplate to be 18.8. Quite darned close.
Uh.... No really. The compressor does no directly adjust electrical energy to cooling tons. It moves warm from one location to another. The break down is more realistically 1200 watts per ton as soon as you think about the result of the refrigerant, i beg your pardon is where the 1 horsepower every ton rule of ignorance comes from. Think about it.... If you to be right, (and you aren"t), consider the size of the circuit that would be compelled for a 10 or 12 thousand BTU window form air conditioner.
Yeah, for sure right. Ns wasn"t reasoning thermodynamically, or soberly. Yet can a brutha acquire a pass? i had four Bacardi and Cokes at the steak house.
Yeah, for sure right. Ns wasn"t thinking thermodynamically, or soberly. However can a brutha get a pass? ns had four Bacardi and also Cokes in ~ the steak house.
You bet. Word on the street is the Coke is occasionally unfit to drink there is no requisite quantities of Bicardi or Captain.

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One reason not to offer DIY advice:Catch a guy a fish and you have the right to sell it come him.Teach a male to fish and you�ve destroyed a great business opportunity.
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