N/A   1300 North 17th Street Rosslyn, VA 22209
 www.nema.org

NEMA 1: Indoor use primarily to provide a degree of protection against limited amounts of fallingdirt.
NEMA 4: Indoor or Outdoor use primarily to provide a degree of protection against wind blown dustand rain, splashing water, hose-directed water and damage from external ice formation.
NEMA 12: Indoor use primarily to provide a degree of protection against dust, falling dirt anddripping non-corrosive liquids.
NEMA 13: Indoor use primarily to provide a degree of protection against dust, spraying water, oil andnon-corrosive coolant.

  NEMA Standards Publication No.250 “Enclosures for Electrical Equipment (1000 Volts Maximum)”
  NEMA Standards Publication No.ICS6 “Enclosures for Industrial Controls and Systems”

N/A   7901 Westpark Drive, McLean, VA 22101

The Joint Industry Council (JIC) was an organization of interestedcompanies and associations primarily concerned with safety, efficiency andmaintenance of electrical apparatus as related to machine tools and similarindustrial equipment. This concern lead to the publication of two AdvisoryStandards.

EMP-1 Electrical Standards for Mass Production Equipment
EGP-1 Electrical Standards for General Purpose Machine Tools