Are 15 and 20A, single-phase, receptacles in a dwelling unit boathouse required to have GFCI protection?

In dwelling units, particularly in locations such as boathouses, receptacles that are rated at 15 and 20 amperes are indeed required to have Ground Fault Circuit Interrupter (GFCI) protection. This requirement is established in the National Electrical Code (NEC) to enhance the safety of electrical installations in areas that are likely to be exposed to moisture, which can increase the risk of electrical shock.

Since boathouses can be considered wet or damp locations due to their proximity to water, the NEC mandates GFCI protection for all 15 and 20A receptacles to minimize hazards associated with the use of electrical equipment in such environments. This requirement applies regardless of whether the receptacles are located outdoors or indoors, as the risk factors present in boathouses warrant GFCI protection at all times.

Other options like stating that GFCI protection is only required during winter months or only for outdoor receptacles do not align with the NEC guidelines, which emphasize the need for safety across all conditions in potentially hazardous locations. Thus, ensuring GFCI protection in these settings is a critical safety measure that helps prevent electrical accidents.