Nema Enclosure Ratings Nec

Nema ratings for enclosures.

Nema enclosure ratings nec. Nema enclosure classifications are developed by nema and used in the u s american market. National electrical manufacturers association nema. The national electrical manufacturer association nema uses a standard rating system that defines the types of environments in which an electrical enclosure can be used and frequently signifies a fixed enclosure s ability to withstand certain environmental. In the electrical world nema stands for national electrical manufacturers association an association of us based equipment manufacturers that produce standards used by many equipment manufacturers.

Enclosure types has only been 110 28 since the 2011 edition of the nec. Nema electrical enclosure environmental protection ratings. The last section in part ii of article 110 in the national electrical code nec covers enclosure types. The table below can be used to convert from nema enclosure types to iec enclosure types.

Nema is a rating system for equipment that might be exposed to liquids rain ice corrosion and contaminates such as dust. Groups a b c and d environments as defined in nfpa standards such as the nec. At nema enclosures our knowledge and experience in nema rated enclosures is so extensive it s in our name. The chart will assist in specifying which enclosure rating is appropriate for the environment and application needed.

The section for enclosure types has not always been 110 28. If unsure of the enclosure rating that is required of your project please refer to the design chart below. Ip code iec ingress protection code a similar standard. Nema connector another common but mostly unrelated set of standards from nema.

8 enclosures constructed for either indoor or outdoor use in hazardous classified locations classified as class i division 1 groups a b c and d as defined in nfpa 70. Nema rating ip equivalent nema definition protection against solids protection against liquids. Electrical equipment in hazardous areas. Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment and to provide a degree of protection against falling dirt.

See ip codes nema. For the 2008 edition the section for enclosure types was 110 20. Nema enclosure ratings are similar to iec ip codes and can offer the same protections but cannot be mapped directly. A source of information about.

Ingress protection ip ratings are developed by the european committee for electro technical standardization cenelec described iec en 60529 and specifies the environmental protection and enclosure provided.