What is the minimum clearance requirement to maintain sufficient access working space around equipment?
110.32 Work Space About Equipment.
Where energized parts are exposed, the minimum clear work space shall be not less than 2.0 m (6 ½ ft) high (measured vertically from the floor or platform) and the width of the equipment or 914 mm (3 ft) wide (measured parallel to the equipment), whichever is greater.
What is the minimum required height of the working space?
Like the dimension for width of working space, there is a minimum dimension for working space height. If the height of the electrical equipment is 61/2 feet or less, the minimum height shall be 61/2 feet. For example, the height of a panelboard installed on a concrete block wall is 5 feet, 10 inches.
What is minimum electrical clearance?
110-26 of the National Electrical Code (NEC): 1) at least a 3-ft clearance in front of all electrical equipment; 2) a 30 in. -wide working space in front of equipment operating at 600V or less; and 3) minimum headroom clearance of 6 ft or the height of the equipment, whichever is greater.
What is the minimum required height of the clear working space in front of a motor control center that is 7 ft tall?
“Headroom” is another way we refer to the height of a working space. For service equipment, switchboards, panelboards, and motor control equipment, the headroom in front of equipment must be at least 6½ ft, measured from the grade, floor, or platform [110.26(E)].
What is the minimum height of an electrical panel?
Height. The minimum height for an electrical box is 4 feet, although the ideal height is between 5 feet and 6 feet. The maximum switch height is 6 feet.
What is the minimum recommended space in an office per person?
A Rule of Thumb
The company suggests the following as a starting point for determining adequate square footage: Offices: 100 to 300 square feet depending on the employee. Open-area workstations: 36 to 100 square feet per person. Reception area: 100 to 400 square feet.
What is the NEC code for panel clearance?
The Occupational Safety and Health Administration (OSHA) and the National Electrical Code (NEC), require that electrical panels have a minimum of 3 feet (36 inches) of clearance and a minimum headroom of 6.5 feet or the height of the equipment whichever is greater.
What is an electrical clearance?
The electrical clearance is the electrical isolation between two conductive components, whereas the creepage indicates the conduction of electricity across the surface of a nonconductive component. The clearance and creepage distance are two important parameters while designing an electrical assembly.
What is the clearance above an electrical panel?
The height of the working space must be at 6-1/2 feet. Other electrical equipment located above or below the panel cannot protrude more than 6-inches beyond the front of the panel.