In the provided plan of a house, is a receptacle required to be installed in the 18" wall space in the NW corner?

In most residential electrical installations, the National Electrical Code (NEC) provides specific guidelines regarding where receptacles must be installed. One of these guidelines pertains to the installation of receptacles in wall spaces that measure 2 feet or more in width. However, wall spaces that are less than this width typically do not require receptacles unless there are special conditions specified by the code or by the design plan.

In the case of an 18” wall space, this area does not meet the minimum dimension specified in the code to necessitate the installation of a receptacle. Therefore, receptacles would not be required in this area.

While it is also important to consider any specific instructions that may come from the design or architectural plans, the baseline requirement set by the NEC is that receptacles are only mandated in wider wall spaces. Thus, stating that no receptacle is required in the 18” wall space is consistent with code requirements.