How many volt-amperes are allowed for each branch circuit serving laundry receptacles when calculating residential service load?

The allowed amount of volt-amperes for each branch circuit serving laundry receptacles, as specified by the National Electrical Code (NEC), is 1,500 volt-amperes. This value is established to account for the load requirements of laundry areas in residential settings, ensuring that the electrical system can safely handle the expected demand without risking overload.

The NEC recognizes that a typical laundry room might have equipment such as washers and dryers, which together can require a significant power supply. By setting the standard at 1,500 volt-amperes per branch circuit, it provides a reasonable estimation for load calculations, helping to ensure that there are adequate provisions for these commonly used appliances.

This determination is important for proper system design and safety, as it allows electricians and contractors to plan adequately for the electrical load and minimize potential hazards associated with insufficient power supply. Additionally, it aids in the overall planning of the residential service load calculation, promoting efficiency and safety in electrical installations.