What does the 120/240V electrical system commonly indicate in the US?

The 120/240V electrical system commonly indicates the voltage levels typically supplied to residential and light commercial buildings in the US. This voltage configuration is standard in most homes, providing a split-phase system where 120V is used for general lighting, outlets, and appliances that require lower energy consumption, while 240V is available for heavier-load appliances like electric stoves, dryers, and air conditioning units.

This dual voltage supply is designed to balance the load and meets the diverse power demands found in residential settings. It allows for flexibility in powering a wide range of devices, making it a critical aspect of electrical infrastructure in homes and light commercial environments.