Realize that fire extinguisher ratings are determined based on tests that laboratories conduct and that ratings are used to estimate the extinguishing potential for each Class A or B fire extinguisher.
Understand that the rating that a Class B extinguisher shows states the approximate number of square feet of a flammable liquid fire that a nonexpert person can expect to extinguish. You find Class B extinguishers with ratings such as 1-B, 2-B, 5-B, 10-B, 20-B, 30-B, 40-B and up to 640-B. A 40-B extinguisher, for example, is effective for putting out a flammable liquid fire covering up to 40 square feet.
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Size Ratings. All extinguishers rated for Class A or B fires are rated from 1 to 40 for an A rating.
Fire extinguishers in your house, garage. Fire extinguishers are given letter ratings according to the type of fire they',ll put out.
Home fire extinguishers use two different ratings to indicate what they are qualified to handle. Fire ratings span from the lower.
When you understand fire extinguisher codes. How to Understand Fire Extinguisher Ratings. Four types (or classes) of fire extinguishers exist.
Most fire extinguishers are rated for use with a specific class (or combination of classes) of fires. How to Understand Fire.
Rice University: Fire Extinguisher Ratings, U.S. Fire Administration, USFA Releases Residential Building Electrical Fires Report, Mar. 2008,
An Explanation of UL Fire Extinguisher Ratings, Types of Fire Extinguishers, ABC Vs. BC Fire Extinguishers, Comments You May Also Like. Fire.
Home fire extinguishers use two different ratings to indicate what they are qualified to handle. One rating uses a letter designation.
Two fire extinguishers must have a UL rating of 4 B:C or more, or one extinguisher must have a UL rating of.
Hanford Fire Department: Fire Extinguisher Ratings, Interactive Learning Paradigms Incorporated: Fire Safety and Fire Extinguishers,
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