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The State Fire Marshal's Office
Suburban Municipalities
National Fire Protection Association
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Multi-class rating
Class A Extinguishers will
put out fires in ordinary combustibles, such as wood and paper.
The numerical rating for this class of fire extinguisher refers
to the amount of water the fire extinguisher holds and the
amount of fire it will extinguish.
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This type is for combustible materials, like paper, wood,
cardboard, or cloth. |
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Class B
Extinguishers should be used on fires involving
flammable liquids, such as grease, gasoline, oil, etc. The
numerical rating for this class of fire extinguisher states the
approximate number of square feet of a flammable liquid fire
that a non-expert person can expect to extinguish.
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This class is for liquids and greases such as gasoline,
kerosene, oil, or paint.
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Class C Extinguishers are
suitable for use on electrically energized fires. This class of
fire extinguishers does not have a numerical rating. The
presence of the letter “C” indicates that the extinguishing
agent is non-conductive.
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This type of extinguisher is for
electrical fires. |
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Class D Extinguishers are
designed for use on flammable metals and are often specific for
the type of metal in question. There is no picture designator
for Class D extinguishers. These extinguishers generally have no
rating nor are they given a multi-purpose rating for use on
other types of fires.
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This type is for flammable metals, like sodium, magnesium or
titanium. |
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Class
K Extinguishers
Dry and wet chemical
extinguishers for kitchen fires. Due to the higher heating rates
of vegetable oils in commercial cooking appliances NFPA 10,
Portable Fire Extinguishers, now includes a Class K rating for
kitchen fires extinguishers which are now required to be
installed in all applicable restaurant kitchens. Once a fire
starts in a deep fryer, it cannot always be extinguished by
traditional range hoods or Class B extinguishers.
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This extinguisher is for commercial kitchens. |
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Multi-class rating
Many extinguishers available today can be used on different
types of fires and will be labeled with more than one
designator, e.g. A-B, B-C, or A-B-C. Make sure that if you have
a multi-purpose extinguisher it is properly labeled.
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you during our regular business hours of 7:30 A.M. to 4:00 P.M.
Monday through Friday. No voice mails, no recorded messages,
just the personal touch of a real person who is concerned for
you and your needs. If we don't have the answer, we will find it
out for you. If we do not offer the work you require we will
help you get in contact with someone that can help you.
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