How To Size Breaker For Ac Unit

A breaker for an AC unit should be sized according to the maximum current the unit will draw. The breaker should be rated for at least that amount of current.

How To Size Breaker For Ac Unit

The size of an air conditioner breaker is determined by the maximum current draw of the unit. Most air conditioners have a current draw of between 10 and 15 amps. The breaker size should be equal to or greater than the unit’s current draw. For example, if the air conditioner has a current draw of 12 amps, the breaker size should be 20 amps or greater.

-Phillips head screwdriver -Voltage tester -Multimeter -Pipe wrench – adjustable wrench – Crescent wrench – Hammer – Chisel – Square – Level

  • Determine the size of the ac unit
  • Determine the maximum current draw of the ac unit
  • Select a breaker that is equal to or greater than the maximum current draw

-The breaker size for an AC unit should be based on the unit’s rated load in amps -The breaker size for an AC unit should also be based on the electrical service’s rating in amps -A circuit breaker is designed to protect the wiring and electrical components in a circuit from overheating or overloading


Frequently Asked Questions

Is A 20 Amp Breaker Enough For An Ac Unit?

It depends on the AC unit. Some units require a 30 amp breaker.

What Size Breaker Do I Need For A 20 Amp Ac Unit?

A 20 amp breaker is what you need for a standard AC unit.

What Size Breaker Is Needed For A 3 Ton Ac Unit?

A 3 ton AC unit would typically require a 20 amp breaker.


In Summary

The breaker size for an AC unit should be based on the unit’s rated load in amps. The breaker size should also be based on the wiring size and the amperage rating of the fuse or circuit breaker protecting the wiring.

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