Appliances installed in an underground parking garage must meet which standard?

Appliances installed in an underground parking garage must meet the standards outlined in NFPA 88A. This standard specifically addresses the design and installation of parking structures, including requirements that are critical for ensuring safety in these unique environments, such as ventilation and access for emergency services.

NFPA 88A is focused on minimizing the risks associated with vehicle emissions, fire hazards, and ensuring that the infrastructure supports both the safe operation of vehicles and the safety of individuals using the parking garage. This includes considerations for combustion appliances and ensuring that they do not create hazards due to the enclosed nature of underground structures.

The other standards relate to different aspects of electrical installations (NFPA 70), gas piping and appliances (NFPA 54), and life safety in building and occupancy (NFPA 101) but do not specifically cater to the unique concerns associated with parking garages. Thus, the applicability of NFPA 88A makes it the correct choice for this scenario.