The UL rating is commonly broken down into Class A and Class B:C ratings. For example , if an extinguisher’s label has the following rating 6A:30B:C . it provides the following information: A = Class A fire and the amount of chemicals/agent in the extinguisher equivalent to the amount of water the extinguisher holds equal to 1.25 gallons of water.
The UL Mark on a fire extinguisher, as well as on fire extinguisher components and agents, is widely recognized to indicate that they meet the standards for safety and performance. Testing to standards for fire extinguishers UL tests to …
UL Rating Guide for Fire Extinguishers – How to choose a …
The numerical rating for a class B fire extinguisher refers to the number of cubic feet that the Fire Extinguisher will be able to extinguish. • Example: A Fire Extinguisher with a rating of 1A:10B:C would contain agents equal to 1.25 gallons of water (1 x 1.25) and would be able to extinguish 10 square feet of a class B fire.
The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish. Located on the fire extinguisher label is the UL rating …
People Also Ask what is ul rating of fire extinguishers
What does UL rating on a fire extinguisher mean?
Also located on the fire extinguisher label is the UL rating. The UL rating is broken down into Class A and Class B:C ratings. These numerical ratings allow you to compare the relative extinguishing effectiveness of various fire extinguishers. For example, an extinguisher that is rated 4A:20B:C indicates the following: 1. The A rating is a …
What is exactly do ul ratings mean?
UL Ratings or Underwriters Laboratories Ratings, actually play a major role in how consumers should choose their light sources. The ratings help distinguish if your lamp can be used in dry, damp or wet locations. This is pretty vital information, as you wouldn’t want to make the mistake of placing a dry-rated lamp in a wet location.
What is UL rating system?
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What do the B C ratings mean on fire extinguishers?
Thus, a 4A will equal about five gallons of water. The numbers on a B or C rating will indicate the square footage that extinguisher can handle. The letter indicates the type of fire that the fire extinguisher can be used on. For example, a rating of 2B means that the fire extinguisher can be used to combat two square feet of a Class B fire.
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Fire Extinguisher UL Rating & Placement as per NFPA 10 Part 1 English Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher