What is the clearance width requirement for electrical equipment?

The clearance width requirement for electrical equipment is crucial for safe access and maintenance. A clearance of 30 inches is established as the minimum distance needed to provide adequate space for personnel to work safely while servicing or inspecting electrical installations. This distance helps ensure that workers can maneuver tools and equipment without the risk of bumping into surrounding obstructions or the equipment itself.

In the context of safety codes and regulations, maintaining this clearance not only supports safe practices but also adheres to the National Electrical Code (NEC) standards, which delineate clearances necessary for accessibility and safety. A wider clearance could provide additional safety but is not mandated as a minimum requirement like the 30 inches, making this the correct choice for the question asked. The options reflecting different widths either fall short of or exceed what is needed for minimum clear access, thereby illustrating the relevance of the 30-inch standard in residential electrical installations.