What type of circuits are typically powered by a 20 amp breaker?

A 20 amp breaker is typically used to supply power to receptacle circuits in kitchens and dining rooms due to the higher power requirements associated with kitchen appliances. These areas often contain devices like microwaves, toasters, and other kitchen gadgets that may require a larger amount of current to operate efficiently and safely.

Kitchens and dining spaces usually require dedicated circuits to handle the load from multiple appliances running simultaneously, thus justifying the use of a 20 amp breaker. This breaker allows for a broader range of connected devices without the risk of overload.

In contrast, lighting circuits generally utilize lower amperage breakers, often 15 amps, since they do not demand as much power. Air conditioning units may require higher amperage breakers depending on their size and capacity, but they usually have specific circuits designed for their load. Wiring for outdoor lighting typically involves lower power needs as well, making it a better fit for circuits with 15 amp breakers.