1. The Association of Electrical Equipment and Medical Imaging Manufacturers ENCLOSURE TYPES Environmental Conditions : and the Appropriate:

2. The Association of Electrical Equipment and Medical Imaging Manufacturers Understanding the Environment Indoors / Outdoors Water -- Drip / Rain / Hose / Submersion / Ice Dust -- Settling, Circulating, or Windblown Dust Corrosive Liquids / Oil / Noncorrosive Liquids Hazardous Location -- Gas / Combustible Dust

3. The Association of Electrical Equipment and Medical Imaging Manufacturers Common To All Enclosures Provide A Degree Of Protection To Personnel Against Incidental Contact With The Enclosed Equipment Rod Test: NEMA 1, 2, 3R

4. The Association of Electrical Equipment and Medical Imaging Manufacturers Driptight -  Falling dirt or moisture will not enter the enclosure Dusttight -  Circulating or airborne dust will not enter the enclosure Rainproof -  Exposure to beating rain will not interfere with the operation of the apparatus or result in wetting of live parts and wiring within the enclosure Definitions

5. The Association of Electrical Equipment and Medical Imaging Manufacturers Raintight -  Exposure to beating rain will not result in entrance of water Watertight -  Water will not enter enclosure when subjected to a stream of water Definitions

6. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor Use General Purpose (Not Exposed To Unusual Conditions) Degree of Protection From Falling Dirt Type 1

7. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor Use Degree Of Protection From:  Falling Dirt  Dripping Non- Corrosive Liquid  Light Splashing of Non- Corrosive Liquid Type 2

8. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor Use Degree of Protection From:  Falling Dirt, Rain, Sleet, and Snow  Windblown Dust Undamaged by the External Formation of Ice. Type 3

9. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor Use Degree of Protection From:  Falling Dirt, Rain, Sleet, and Snow Not Dustproof, Snowproof, or Sleetproof Undamaged by the External Formation of Ice Type 3R

10. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor Use Degree of Protection From:  Falling Dirt, Rain, Sleet, Snow, and Windblown Dust External Mechanism(s) remain Operable When Ice Laden Type 3S

11. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor Use Degree of Protection From:  Windblown Dust and Rain  Splashing Water  Hose Directed Water  Undamaged by the External Formation of Ice Type 4

12. The Association of Electrical Equipment and Medical Imaging Manufacturers  Windblown Dust and Rain  Splashing Water  Hose Directed Water  Damage from External Ice Formation  Corrosion Resistive Indoor or Outdoor Use Degree of Protection From: Type 4X

13. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor Use Degree of Protection From:  Falling Dirt, Settling Airborne Dust, Lint, Fibers, and Flyings  Dripping and Light Splashing of Noncorrosive Liquids Type 5

14. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor Use Degree of Protection From:  Falling Dirt  Hose Directed Water  Damage From External Ice Formation  Entry of Water During Occasional Temporary Submersion at a Limited Depth Type 6

15. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor Use Degree of Protection From:  Falling Dirt  Hose Directed Water  Damage From External Ice Formation  Entry of Water During Prolonged Submersion at a Limited Depth Type 6P

16. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor use in locations classified as Class I, Groups A, B, C, or D, as defined in the NEC®. Protection against Hazardous Location atmospheres containing Gases and Vapors. Type 7

17. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor use in locations classified as Class I, Groups A, B, C, or D, as defined in the NEC®. Protection against Hazardous Location atmospheres containing Gases and Vapors. Arcing contacts, connections, … are immersed in oil in order to confine ignition source. Type 8

18. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor use in locations classified as Class II, Groups E, F, or G, as defined in the NEC®. Protection against Hazardous Location atmospheres containing Dust. Type 9

19. The Association of Electrical Equipment and Medical Imaging Manufacturers Capable of meeting the requirements of the (MSHA) Mine Safety and Health Administration, 30 C.F.R., Part 18. Type 10

20. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor use primarily to provide a degree of protection against: Circulating Dust Falling Dirt Dripping Noncorrosive Liquid Circulating Lint, Fibers and Flyings (Nonhazardous and not considered Class III Type ignitable fibers or flyings) Type 12 with Knockouts Type 12 Type 12K

21. The Association of Electrical Equipment and Medical Imaging Manufacturers Indoor or Outdoor use primarily to provide a degree of protection against: Dust Spraying of Water, Oil, and Noncorrosive Coolant Oil and Coolant Seepage Type 13

22. The Association of Electrical Equipment and Medical Imaging Manufacturers Comparison of Indoor Enclosure Applications Enclosure Type Condition of Protection1 2 4 4X 5 6 6P 12(K) 13 Falling DirtX X X X X X X X X Falling Liquids and Light Splashings -- X X X X X X X X Circulating dust, lint, fibers, & flyings -- -- X X -- X X X X Settling airborne dust, lint, fibers & flyings*-- -- X X X X X X X Hosedown and Splashing water-- -- X X -- X X -- -- Oil and Coolant seepage-- -- -- -- -- -- -- X X Oil or Coolant spraying and splashing -- -- -- -- -- -- -- -- X Corrosive Agents-- -- -- X -- -- X -- -- Occasional Temporary Submersion-- -- -- -- -- X X -- -- Occasional Prolonged Submersion-- -- -- -- -- -- X -- -- * These fibers and flyings are nonhazardous materials and are not considered Class III type ignitable fibers or combustibles flyings Table: NEMA 250

23. The Association of Electrical Equipment and Medical Imaging Manufacturers Comparison of Outdoor Enclosure Applications Enclosure Type Condition of Protection3 3R 3S 4 4X Rain, snow, sleetX X X X X Sleet (External Operating Mech. Operable w/ ice) -- -- X -- -- Windblown dustX -- X X X Hosedown -- -- -- X X Corrosive Agents -- -- -- -- X Table: NEMA 250

24. The Association of Electrical Equipment and Medical Imaging Manufacturers Comparison of Indoor Enclosure Applications for Hazardous Locations Table: NEMA 250 See NFPA 497M for complete listing of atmosphere classifications NFPA 496, Purged and Pressurized Enclosures..., outlines alternatives to Type 7 & 9 Enclosures when adequate positive pressure ventilation is used. Type 7 & 8 Type 9 Atmosphere Containing: Class A B C D E F G 10 Acetylene IX -- -- -- -- -- -- -- Hydrogen, manufactured gas I -- X -- -- -- -- -- -- Diethel ether, ethylene, cyclopropane I -- -- X -- -- -- -- -- Gasoline, hexane, butane, naphtha, propane,acetone,toluene, isoprene I-- -- -- X -- -- -- -- Metal dust II-- -- -- -- X -- -- -- Carbon black, coal dust, coke dust II -- -- -- -- -- X -- -- Flour, starch, grain dust II -- -- -- -- -- -- X -- Fiber flyings III -- -- -- -- -- -- X -- Methane with or without coal dust MSHA -- -- -- -- -- -- -- X

25. The Association of Electrical Equipment and Medical Imaging Manufacturers European System of specifying the degree of protection provided by the enclosure. NEC® does not accept IP designations as an alternative for Type ratings. IEC 60529 does not address mechanical damage, risk of explosion, or corrosion. UL 50E and NEMA 250 do evaluate mechanical characteristics such as corrosion, icing, oil, … IEC Enclosure Designations

26. The Association of Electrical Equipment and Medical Imaging Manufacturers Example: IP10 The IEC designation consists of the letters IP followed by two numerals. The first numeral indicates the degree of protection provided against persons and solid foreign objects entering the enclosure. The second numeral indicates the degree of protection provided against the harmful ingress of water into the enclosure. IEC Enclosure Designations

27. The Association of Electrical Equipment and Medical Imaging Manufacturers (This Table cannot be used to convert IEC IP Designations to NEMA Enclosure Types) Conversion of NEMA Types to IEC IP Designations

28. The Association of Electrical Equipment and Medical Imaging Manufacturers Understanding the Enclosure Conversion Table (The Table cannot be used to convert IEC IP Designations to NEMA Enclosure Types)

29. The Association of Electrical Equipment and Medical Imaging Manufacturers Multiple Types on Enclosure Type 3, 3R, 4X, 5, 12 Stainless Steel or other materials approved for the use (Corrosion Protection) Gasketing (Dust and Water Protection) Drain Plug (Remove for Type 3R)

30. The Association of Electrical Equipment and Medical Imaging Manufacturers UL 231 - Power Outlet -Water Splash Test -GFCI Requirements NEC® Branch Circuits 590.4 Temporary Installations 555.19(A)(3) Marinas and Boatyards 551.78(A) Recreational Vehicle Parks Power Outlet

31. The Association of Electrical Equipment and Medical Imaging Manufacturers More Information? UL “White” Book Electrical Equipment For Use In Ordinary Locations, Page 133 Hazardous Locations Equipment Directory, Page 101 NEMA NEMA Standard 250-2013 Global Publications (800) 854-7179