NEC 210.52(D)(3) in the 2020 National Electrical Code (NEC) states requirements for receptacles on balconies, decks, and porches.The phrase "balcony that [is] within 4[feet] horizontally from the dwelling" refers to a balcony that is close enough to the main structure of the dwelling to be considered part of the living space. The receptacle requirement is based on the balcony being accessible from inside the dwelling.

Think of it this way

A balcony that is physically connected to and extends from a dwelling, and it's not further than 4 feet horizontally from the wall of the dwelling, would need a receptacle.

Reasoning

The code is trying to ensure readily accessible receptacles are provided where people are likely to use electrical appliances, lights, or entertainment equipment. If a balcony is essentially an extension of the interior living space, a receptacle is needed.

In summary: If a balcony is directly attached to and within 4 feet of the dwelling's wall, it must have a receptacle outlet. This ensures convenient access to power for outdoor activities. Flag for review