True or False: Outdoor receptacles in dwelling units can be connected to a 20A small-appliance branch circuit.

The correct answer is that outdoor receptacles in dwelling units cannot be connected to a 20A small-appliance branch circuit. According to the National Electrical Code (NEC), small-appliance branch circuits are intended specifically for the supply of power to receptacles intended for the kitchen and similar areas, strictly for the use of portable appliances such as toasters and coffee makers.

The NEC has specific requirements for outdoor receptacles, stipulating that they should be on a separate circuit that provides adequate protection and complies with safety measures. This is primarily to avoid overloading the small-appliance circuits and to ensure sufficient power for outdoor tools and equipment, which may have higher power demands. Therefore, connecting outdoor receptacles to a 20A small-appliance branch circuit does not comply with NEC guidelines, making this statement false.

Other options such as temporary usage or requiring GFCI protection may apply to specific contexts or scenarios, but they don't validate the connection of outdoor receptacles to small-appliance branch circuits as permissible under the NEC. Specifically, the requirement for GFCI protection is a separate consideration and does not amend the restriction against connecting such receptacles to a small-appliance circuit.