Section 110.26 in the 2020 NEC is entitled Spaces About Electrical Equipment and outlines the three areas of working space discussed in this article.
What section in the NEC provides clearances in front of electrical equipment?
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.
Which NEC section provides working space requirements?
In the NEC, working space requirements are found primarily in Article 110. NEC 110.26 applies to electrical equipment operating at 600 volts or less. The primary requirement is that both access and working space must be provided and maintained for all electrical equipment.
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 NEC section states that working space about electrical equipment shall not be used for storage?
110.26(E)]. The working space must always be clear; therefore, this space cannot be used for storage [Sec. 110.26(B)]. Working space is not required at the back or sides of equipment where all connections and all renewable, adjustable, or serviceable parts are accessible from the front of the equipment.
What is the requirement of working area around the electrical equipment?
To be on the safe side, the working space and space around electrical equipment should always be clear per 110.26(A), if possible. As a basic rule, there should be at least 3 feet of space in front of all equipment with a 30 inch width as well as 6½ feet of headroom space.
What is the width of the working space required in front of electrical equipment NEC?
The width of the working space in front of the electrical equipment shall be the width of the equipment or 750mm (30 in.), whichever is greater. In all cases, the work space shall permit at least a 90 degree opening of equipment doors or hinged panels.
What is 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.
How much clearance is in front of electrical panel?
These regulations require accessibility to the front of electrical panels to have a minimum of three feet of clearance and a minimum width to be the width of the equipment or 2.5 feet, whichever is greater.
What is the code for electrical panel?
The National Electrical Code 110.26 states that breaker boxes, and electrical equipment in general, must be placed in areas that provide sufficient working clearance around them. More specifically, the breaker box needs 3 feet of clearance in front of it.
What article in NEC is services?
Article 230 covers the installation requirements for service conductors and equipment.
Do transformers need working clearance?
Generally, a transformer located near a building requires 4ft clearance from the building vertical surfaces, assuming no windows from grade to 18ft.