What is the minimum ampacity needed for a service to operate a central air conditioner, electric clothes dryer, and electric range?

To determine the appropriate minimum ampacity for a service that operates a central air conditioner, electric clothes dryer, and electric range, it's crucial to consider the power requirements of each of these appliances as they typically are rated in volts and amps.

Central air conditioners usually require a significant amount of electrical power, often in the range of 20 to 30 amps. Electric clothes dryers also demand a considerable amount of power, often around 30 amps, depending on the model. Electric ranges can vary widely but generally require around 30 to 50 amps depending on the number of burners and other features.

The option stating 100 amps at 240 volts is the most appropriate because it can provide sufficient power for all these high-demand appliances. When operating at 240 volts, the calculation for total ampacity must include the starting and running amps of the air conditioner, the continuous load of the dryer, and the range.

In contrast, options that specify 60 amps would likely be insufficient, as this does not take into consideration the combined load of these high-demand appliances. The lower options with 100 amps at 120 volts are also unsuitable, as they do not provide the necessary amperage at the required voltage to support all three appliances simultaneously.