What is a Class 1 Div 2 area?
Class I Hazardous Locations refer to facilities which deal with flammable gases, vapors, and liquids. Division 2 specifies that these flammable materials are handled, processed, or used in the defined hazardous location, but are not normally present in concentrations high enough to be ignitable.
What is a Class 2 Div 2 area?
CLASS II. Class II locations consist of locations where combustible dusts may exist that have the potential to become flammable or ignitable. Locations that would be considered to be Class II include Grain elevators, Flour and feed mills, Metal powder manufacturers, and Coal plants, etc.
What is a Class 2 hazardous location?
Class II Locations The second type of hazardous location is called a “Class II Location”. This classification is created by the presence of combustible dust in the air in sufficient quantities to be explosive or ignitable.
What are the 3 classes of hazardous locations?
Class I locations are those in which flammable vapors and gases may be present. Class II locations are those in which combustible dust may be found. Class III locations are those which are hazardous because of the presence of easily ignitable fibers or flyings.
What is a Class 1 area?
Class 1 federal lands include areas such as national parks, national wilderness areas, and national monuments. These areas are granted special air quality protections under Section 162(a) of the federal Clean Air Act.
What does Class 1 Group D mean?
Class I Group D locations are atmospheres containing elements such as Gasoline, Hexane, Naphtha, Benzine, Butane, Propane, Alcohol, Acetone, Benzol, Lacquer Solvent Vapors or Natural Gas.
Does Class 1 Div 2 require explosion proof?
A Class I Division 2 light are not held to as high of a standard as Division 1 products. To meet the requirements for Division 2, a light does not have to be able to contain an explosion. Instead, they must be found to be unable to cause an explosion in environments for which they are approved to be used.
What is a Class 1 Division 1 location?
Class I, Division 1 classified locations. An area where ignitable concentrations of flammable gases, vapors or liquids can exist all of the time or some of the time under normal operating conditions.
What is class 1 and class 2 electrical equipment?
Class 1 and Class 2 appliances are all powered by mains voltages. Both classes are required to provide at least two levels of protection to the end user. You could see this as a back-up; if one protection layer fails then the second layer back-up is still in place. This makes electrical equipment safe to use.
What is the difference between a Class 1 and Class 2 power supply?
Class I – where user protection from electric shock is achieved through a combination of insulation and a protective earthing/ground. Class II – where user protection from electric shock is achieved through two levels of insulation (either double or reinforced), without the need for earthing.
Is NEMA 4X good for Class 1 Div 2?
We recommend electrical enclosures meet or exceed a NEMA rating of Type 4 or Type 4X for use in a Class1 Div2 hazardous location when used with appropriate purge systems.
What is Class I Class 1 and Div 1?
Today, we’re going to learn about Class I, Div 1, and the Groups that EXAIR HazLoc Cabinet Cooler Systems are designed for use in. “Class I” simply means that ignitable concentrations of flammable gases, vapors, or airborne liquids can exist under normal operating conditions.
What type of wiring is allowed in Class I Division 2?
501.10 (B) Class I, Division 2. (1) General. In Class I, Division 2 locations, all wiring methods permitted in 501.10 (A) and the following wiring methods shall be permitted: (1) Rigid metal conduit (RMC) and intermediate metal conduit (IMC) with listed threadless fittings.
What is a Class 1 Division 2 enclosure?
So a Class 1 Division 2 Enclosure is used in facilities that deal with flammable gases, vapors, and liquid materials. Additionally, the facility handling, processing, or using the materials in the defined hazardous location contain concentrations insufficient to be ignitable.
What is a Class I Division 2 code change?
Class I, Division 2. 501.10 (B) (1) Wiring Methods. Class I, Division 2. Code Change Summary: Changes were made to the allowable wiring methods used in a Class I Division 2 location.