Hazardous Classified Locations, NEC 2020

Hazardous Classified Locations, NEC 2020 - [500.5], (17min:43sec)

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Hazardous (Classified) Locations are unique because they have additional requirements when installing electrical equipment and circuits. But ? Find out how to identify these locations in this video.
This video is an extract from Mike Holt’s Understanding the 2020 National Electrical Code Complete Training Library. For more information about this product visit www.MikeHolt.c... or call 888.632.2633.
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@markf.r4538 Жыл бұрын

Hazardous Locations Summary by Mark Class I = Gas and Vapor {flammable and combustible LIQUID}. {Class I} has two Divisions {Division 1, Division 2} Division I = Normal. {Serious Explosion and it will definitely happen} {one Mistake, you are on Fire} Division II = Abnormal. {none Serious Explosion but might really happen}. {two mistakes you are on Fire}. i.e ={Leakage then Spark }. Class II = Division I & Division II {Division I = Dust in the air} {Division II = Dust on Equipment}. Any of these Divisions could cause fire. Class II Division I or II = Combustible Dust.{500 microns or less} is considered combustible dust and could cause fire. {Dust in {Class II, Division I = (Dust in Air)} ….. Dust in {Class II, Division II = (Dust on Equipment)}….. Class III { What are ignitable fibers or flyings? This classification is created by the presence of easily ignitable fibers or flyings. Typically these fibers and flyings are not suspended in the air, but can collect around machinery or on lighting fixtures and where heat, a spark or hot metal can ignite them.} Class III, division I = { Textile mills, cotton gins; • Cotton seed mills, flax processing plants; and • Plants that shape, pulverize or cut wood and create sawdust or flyings {clothing or farms that deal with grains like the coat of the coffee for example} Class III, Division II = { Division 2 is also a subset of Class III and is classified as an area where ignitable fibers or flyings may be stored or handled.} {like when you store clothing or cotton gin somewhere}