A receptacle below a 4-way switch in the corner of a living room is required because of the need for a receptacle in any wall space how wide?

The correct answer is based on the National Electrical Code (NEC) requirements regarding receptacle placement in residential wiring. In dwelling units, the code states that a receptacle outlet must be installed in any wall space that is considered to be 24 inches wide or more. This means that if a wall section is 24 inches or greater in width, a receptacle must be present in that space to ensure accessibility for plugging in appliances and devices.

The placement of the receptacle below a 4-way switch ensures that the outlet is conveniently located and meets the spacing requirements established by the code. This rule is intended to promote safety and convenience within living spaces by providing sufficient access to electrical outlets in areas where they are most needed.

Understanding the context of this requirement can help in various installation scenarios, ensuring compliance with electrical codes and enhancing the usability of living spaces.