Which guidelines specify the mounting heights for receptacle and switch boxes?

The Americans with Disabilities Act Guidelines (ADA) are the right choice because they specifically address accessibility requirements for individuals with disabilities, including the mounting heights of receptacle and switch boxes. These guidelines ensure that electrical switches and outlets are installed at heights that make them easily reachable for individuals using wheelchairs or other assistive devices. This focus on accessibility is critical in creating an inclusive environment in both public and private buildings.

The other organizations mentioned have different focuses. The Occupational Safety and Health Administration (OSHA) primarily deals with workplace safety and health regulations, not the specifics of electrical installations. The National Electrical Code (NEC) does provide important regulations regarding electrical systems as a whole, but it does not specifically address accessibility dimensions. The International Building Code (IBC) covers a wide range of building construction regulations, including safety and structural integrity, but like the NEC, it does not specifically outline the mounting heights for receptacles and switches concerning accessibility. Thus, the ADA is the most relevant source for these specifications.