NEC Article 110.32 is a safety regulation for electrical installations in the United States. This article specifies the requirements for work spaces and access to electrical installations. It outlines the need for sufficient space to allow for safe maintenance and operation of electrical equipment, and specifies the minimum clear work space required when exposed energized parts are present. Additionally, it outlines the need for appropriate caution signs for metal-enclosed equipment, and specifies the requirements for nonmetallic or metal-enclosed equipment located outdoors and accessible to the public.
110.32 Work Space About Equipment
When performing maintenance or operation on electrical equipment, it is important to ensure that there is sufficient space to do so safely. If there are exposed energized parts, the minimum clear work space should be at least 2.0 meters high (measured vertically from the floor or platform) or 914 mm (3 ft) wide (measured parallel to the equipment). The depth should meet the requirements of NEC 110.34(A). Additionally, the work space should allow for the opening of doors or hinged panels to at least 90 degrees.
Following points are main points related to NEC Article 110.32.
- All electrical equipment installed in a premises must be approved by an approved testing laboratory.
- All electrical equipment must be marked to identify the listing agency and it must be installed and used in accordance with any instructions included with the marking.
- All wiring must be done in accordance with the National Electrical Code (NEC).
- All wiring must be done in a neat and workmanlike manner and all connections must be made properly.
- All wiring and equipment must be insulated and grounded properly.
- All wiring must be properly supported and all electrical boxes must be securely fastened.
- All circuit breakers and fuses must be of the correct size and rating for the circuit.
- All wiring and equipment must be properly labeled to identify the circuit.
- All receptacles and switches must be mounted and installed in accordance with the NEC.
- All switchgear, panelboards, and switchboards must be of the specified type and size and must be installed in accordance with the NEC.