What is the minimum width of working space required for electrical equipment that is 48 inches wide?

The minimum width of working space required for electrical equipment is determined by the dimensions of the equipment itself and the need for safe access to conduct maintenance and operations. In this case, since the electrical equipment is 48 inches wide, the required working space must be equal to or greater than this width to ensure there is sufficient room for personnel to move comfortably and safely while servicing the equipment.

According to industry standards, particularly the National Electrical Code (NEC), the working space in front of electrical equipment should not only accommodate the width of the equipment but also provide access to all necessary points of operation and maintenance. Thus, a minimum working space that matches the equipment's width is deemed necessary, which confirms that 48 inches is the correct answer.