Class 1 Division 1 Electrical Requirements

Class i division 1 class i division 2 class ii division 1 class ii division 2 class iii division 1 class iii division 2.

Class 1 division 1 electrical requirements.

1 areas must be listed for class i div. Tefc totally enclosed fan cooled motors and odp open drip proof motors can be used in division 2 locations provided they do not have ignition sources. All applicable requirements in this subpart apply to all hazardous classified locations unless modified by provisions of this section. An explosion proof motor certified for use in a class i division 1 location may also be operated in a class i division 2 area provided the motor meets the group and t code requirements.

Understanding the nec hazardous location option. In any case you don t want to make the determination as to where the class 1 division 1 area ends and the class 1 division 2 area ends. Recommended reading for this topic. 29 cfr 1910 subpart s electrical 1910 307.

Can i use a piece of equipment approved for use in a division 1 hazardous location in a division 2 hazardous location. You ll find that in open areas the class 1 division 1 area is limited to a distance 5 from the source. Electrical equipment installed in such locations could provide an ignition source due to electrical arcing or high temperature. For definitions of these locations see 1926 449.

1 fittings and flexible cords used in class i div. No other aspect of industrial safety receives more attention in the form of codes standards technical papers and engineering design. Zone 2 group iia. Class 1 div 2 groups a b c and d for enclosure cooling systems posted on august 20 2020 september 17 2020 by barry slotnick when you are working with hazardous materials it is important to know exactly how the materials and compounds are classified.

There are four general differences in wiring method requirements for div. 1 it s also allowed for div. If a wiring method is allowed for div. Class division hazardous location 33 introduction a major safety concern in industrial plants is the occurrence of fires and explosions.

Protection techniques for hazardous areas north america. The class 1 division 2 area is limited to a distance of 10 from the source. Class i division 2 group d. In electrical and safety engineering hazardous locations hazloc pronounced haz lōk are places where fire or explosion hazards may exist.

Class i zone 0 or zone 1 locations may not abut class i division 1 or division 2 locations. National electrical code nfpa 70 chapter 5 article 500.