What is the required height for appliances installed where motor vehicles can pass beneath them?

The correct response indicates that appliances must be installed at a height of 1 foot above the tallest vehicle garage door opening when they are positioned in areas where motor vehicles can pass beneath them. This specific height requirement is established to ensure safety and prevent any potential damage or interference with the operation of vehicles. By positioning equipment at this height, there is adequate clearance for vehicles to safely pass without risk of hitting the appliances, thereby minimizing the chance of accidents.

In environments such as garages, where vehicles can vary in height, it is crucial to adhere to regulations that provide guidelines for equipment placement. This height allows for typical clearance of most vehicles while also providing some margin for taller vehicles, which helps to maintain a safe working environment. Therefore, the specified height is a practical and essential safety measure in mechanical installations.