// DEFINITION
Type of Protection "N
Type of Protection "n". Type of protection where electrical equipment, in normal operation, is not capable of igniting a surrounding explosive gas atmosphere and a fault capable of causing ignition is not likely to occur.
Related Code Sections
(D) Special Occupancies, Type of Protection "n"
This protection technique shall be permitted for equipment in Class I, Zone 2 locations. Type of protection "n" is further subdivided into nA, nC ...
(N) Special Occupancies, Moisture or Physical Damage
Where outdoor or under-chassis wiring is 120 volts, nominal, or over and is exposed to moisture or physical damage, the wiring shall be protected ...
(N) Special Conditions, Communications Raceways
Class 2, Class 3, and Type PLTC cables shall be permitted to be installed in plenum communications raceways, riser communications raceways ...