Due to the potential for fire or explosion, there is a need for equipment that is explosion proof. Under normal, everyday operating conditions, Division 1 is classified as a subset of Class I, where the explosive or flammable gases, vapors or liquids mentioned above can be found.
Table of Contents
Does Class 1 Div 2 require explosion proof?
Class I locations must be explosion-proof, Class II locations must be dust-proof, and Division 1 motor must be dust-proof. The motor’s enclosure is designed to exclude hazardous materials.
What is Class I Div II?
There are classified locations for Class I, Division 2 and Zone 2. Under normal operating conditions, flammable gases, vapors or liquids are not likely to exist in this area. The gas, vapor, and liquids would only be present under normal conditions.
What is a Class 1 motor?
Class I locations have a risk of explosion if they have enough atmospheric gases or vapors. They need to be built and labeled as explosion proof. To be classified as explosion-proof, Class I, Division 1 motor must have certain characteristics.
Can NEMA 4x be used in Class 1 Div 2?
Class 1 Division II classification means electrical enclosures can be used in areas with less than 10% of hazardous materials present.
Are submersible pumps explosion-proof?
In hazardous areas, explosion-proof pumps are necessary for safety. In the case of mining and oil and gas exploration, an explosion’s potential fuel source is escaping underground gas from pockets that are often under extreme pressure.
What is a Class 1 Division 1 area?
There is a Class I, Division 1 area that includes Zone 0 and Zone 1. The area where ignitable concentrations of flammable gases, vapors or liquids are present continuously or for a long period of time under normal operating conditions.
What is a Class 2 Div 2 area?
Class 2 Division 2 is an area where there may be enough dust to cause an explosion.
What is a Class 1 Div 2 enclosure?
Facilities that deal with flammable gases, vapors, and liquid materials use a Class 1 Division2 Enclosure. The facility handling, processing, or using the materials in the hazardous location have concentrations that are notignitable.
What is a Class 2 hazardous location?
There are two types of hazardous locations, the second being called a Class II location. The classification is created by the presence of dust in the air that is sufficiently large to make it explode.
What is the difference between Class 1 Div 1?
Under normal, everyday operating conditions, Division 1 is a subset of Class I and is classified as an area where the explosive or flammable gases, vapors or liquids mentioned above can be found.
What’s the difference between Class 1 Div 1 and Class 1 Div 2?
Facilities that deal with flammable gases, vapors, and liquids are classified as Class 1 hazardous locations. The flammable materials are handled, processed, or used in a hazardous location, but are not usually present in concentrations high enough to beignitable.
What is a Class 1 location?
Class I locations are created by the presence of flammable gases or vapors in the air in enough quantities to make them explode. If an electrical or other source of ignition is present, there is a chance for explosion.
What is an example of a Class 1 Division 2 location?
Class I locations are those where gases and vapors can be seen. Class II locations have the possibility of being found with dust.
Which of the following is approved for use in most Class 1 Division 1 locations?
All compounds can be used in all applications.
What does NEMA 4 mean?
There are weathertight enclosures in type 4. There is a degree of protection against falling dirt, rain, sleet, snow, wind blown dust, splashing water, and hose directed water provided by this item. The ice on the enclosure will not cause any damage.
What type of wiring must be used in a Class 1 Division 1 hazardous location?
There are two wiring methods that can be used in a Class I Division 1 location.
Are double locknuts an acceptable bonding method for Class 1 Division 1 hazardous locations?
Double lock nut types of contacts aren’t acceptable. All raceways, fittings, boxes, enclosures, etc., between Class I locations and the grounding point for service equipment or separately derived systems are covered by the means of bonding.
What is explosion proof wiring?
conduits and seals are required for explosion proof wiring. These are to make sure the circuit is free of hazardous gases. Any escaping hot gasses will be cooled so that they wouldn’t ignite the hazardous mixture outside of the explosion proof fixture. It’s much easier toIntrinsically safe wiring.