To determine the size of the generator needed to run a 1-ton (12,000 BTU) air conditioning unit, you'll need to consider both the starting (surge) and running (continuous) power requirements of the AC unit.
Starting Power (Surge): When an AC unit starts, it requires a higher surge of power to overcome the initial resistance of the compressor and get the motor running. This surge typically lasts for a few seconds and is higher than the unit's continuous running power.
Running Power (Continuous): Once the AC unit is running, it requires a relatively lower and consistent power to maintain its operation.
The exact starting and running power ratings of the AC unit should be mentioned on the unit's nameplate or in its documentation. However, for estimation purposes:
- 1-ton AC units typically have a starting power (surge) of around 2,000 to 3,000 watts.
- The running power (continuous) of a 1-ton AC unit ranges from approximately 800 to 1,500 watts.
Now, to select an appropriate generator, you need to ensure that it can handle the starting surge as well as the continuous power draw of the AC unit. To be on the safe side, consider the higher end of the surge and running power range:
- Surge Power: 3,000 watts
- Running Power: 1,500 watts
Therefore, you'll need a generator with a capacity of at least 3,000 watts to handle the starting surge and continuous running of a 1-ton AC unit. It's always a good idea to choose a generator with a little extra capacity to accommodate potential variations in power requirements and ensure stable operation.