# How many amps does a 3.5 ton air conditioner use?

## How many amps does a 3.5 ton air conditioner use?

A 3 ton AC in the SEER range from 14 to 24 SEER will use 7.5 to 12.3 amps….How many amps does a 1-5 Ton ac unit draw?

Air Conditioner Capacity (Ton) | BTU | Amps |
---|---|---|

2.5 Ton | 30,000 BTU | 9.32 amps |

3 Ton | 36,000 BTU | 11.18 amps |

3.5 Ton | 42,000 BTU | 13.04 amps |

4 Ton | 48,000 BTU | 14.91 amps |

## What is LRA on an air conditioner?

Another term noted on the air-conditioner nameplate is “Compressor L.R.A.” This term represents Locked-Rotor Amperes and is the maximum current flowing to the motor when it is in a locked, or not turning, condition.

**What size generator do I need to run a 3.5 ton AC unit?**

You’ll need a generator between 7.5 kW and 20kW to run a 2-5 ton AC unit. Specific size generators with the power needed for AC units of these sizes are included below….what size generator to run 2 – 5 ton ac unit.

AC Unit Size (Ton) | Generator Size (kw) |
---|---|

3.5 ton | 14kW |

4 ton | 15kW |

5 ton | 18kW |

**What size breaker do I need for a 3.5 ton heat pump?**

Circuit Breaker Requirements Based On Unit Tonnage

Unit Size (tons) | Draw (Amps) | Breaker Size (Amps) |
---|---|---|

2.5 | 10-20 | 20-30 |

3 | 12-24 | 20-30 |

3.5 | 14-28 | 30-40 |

4 | 15-30 | 30-40 |

### How many amps does a 4 ton air conditioner use?

If you have a 4-ton (40-Amp, 48,000 BTUs) air conditioner, you need at least a 17 KW generator.

### How do you calculate LRA?

Locked Rotor Amps Formula To calculate the locked rotor amps, divide the kVA by the horsepower, multiply that result by 1000, then divide the result by the voltage.

**Will a 10kw generator run a 3 ton AC unit?**

If you have a 3-ton (30-Amp, 36,000 BTUs) air conditioner, you need at least a 14 KW generator. If you have a 4-ton (40-Amp, 48,000 BTUs) air conditioner, you need at least a 17 KW generator. If you have a 5-ton (50-Amp, 60,000 BTUs) air conditioner, you need at least a 20 KW generator.

**How many amps does A 4-ton air conditioner use?**

## What size wire do I need for A 4-ton AC unit?

10 AWG wire

An average 4-ton AC unit has a max. wattage of about 4,800W and requires a wire with a minimum ampacity of 27.28A. That means you will need to use a 10 AWG wire with 35A ampacity.

## How many amps does a 5 ton AC pull?

An average 5-ton air conditioner (with 10 EER rating) will run on 6,000 W. Such a 5-ton air conditioner will use 25 Amps at 240V. Examples of 60,000 BTU units are 4-zone mini-splits and 5-zone mini-split air conditioners.

**How is LRA compressor calculated?**

LRA (lock rotor amps) can be converted to HP using this formula: (LRA Watts x Volts)/ 746 Watts = Horsepower. You can also use the BTUh. For example, 18,000 BTUh equals 2 HP or 24,000 2.5 HP.

**What causes a compressor to pull LRA?**

If the compressor was mechanically stuck (for example, if something was wedged between the piston and cylinder), the motor would lock its rotor and draw LRA. If the contacts between terminals 1 and 2 of the potential relay were stuck open for some reason, the start capacitor would be out of the circuit.

### How many kw does a 4 ton AC use?

Central Air-Conditioners use an average of 1 kilo watt hour per ton per hour. A four-ton air-conditioner uses around 4 kWh per hour. The usage would be 48 per day if a four-ton air-conditioner ran for 12 kWh per day.

### How many amps does A 5 ton AC use?

**How much power does a 3 ton AC unit use?**

A three ton central air conditioner uses 3500 watt per hour and a 12,000 watt window unit uses 1200 watt per hour as a general reference point.