NEMA 04 : National Electrical Manufacturers Association. NEMA standards are used to specify suitability of sensor and sensing system enclosures for various sensing environments.
Department of Defense, Military Handbook 1008C, 10 June 1977, Fire Protection for Facilities Engineering, Design, and Construction, Glossary, USA 1977. www.cecer.army.mil/kdsites/hvac/.../MIL-HDBK-1008C .pdf, (Fr Prac - Amer) {42}
Department of Energy AREA SAFT, DOE Handbook, Electrical Safety (Appendix B), Acronyms and Definitions, DOE-HDBK-1092-98, D.C. 20585, USA 1998. http://energy.gov/sites/prod/files/2013/07/f2/hdbk 1092.pdf, (Electr Sfty - Amer) {43}