Enclosures
An electrical enclosure is a cabinet or box that
protects electrical or electronic equipment and prevents electrical
shock. Enclosures are usually made from rigid plastics or such metals as
steel, stainless steel, or aluminum. Enclosures are rated to designate
protection against hazardous, non-hazardous, and other specific
environmental conditions.
Enclosures protect electrical equipment
in diverse building, industrial, and utility applications. They may
also shield equipment from electromagnetic and radio frequency
interference. Enclosures are often used to protect the following types
of equipment:
- Circuit breakers, contactors, control panels, and switches
- Distribution boards and panelboards
- Pressurization and purging equipment and systems
- Telephone cabinets
Since enclosures must be installed in accordance with the National Electrical Code®
(NEC) and all applicable local regulations, Members develop proposals
for the NEC, International Code Council codes, and other codes.