What do the symbols on a fire extinguisher indicate Boat Ed?

Extinguishers are classified by a number and letter symbol. The number indicates the relative size of the extinguisher, and the letter indicates the type of fire it will extinguish. … On Type B extinguishers, the number tells you the square footage of the fire the extinguisher can put out.

What are the symbols on a fire extinguisher?

The ABCs of Fire Extinguishers

LETTER SYMBOL USES
B For gasoline, oil, paint and other flammable liquids.
C For live electrical equipment.
D For combustible metals
K For fires in cooking appliances that involve combustible cooking media (such as oils/fats in deep fryers)

What does the label on a fire extinguisher mean?

The letters indicate the type material the extinguisher can be used on; A for combustible solids (paper, wood and trash), B for combustible liquids (gasoline, oil, acetone) and C for electrical equipment. …

What does 2A 10BC mean?

A fire extinguisher that is rated 2A:10 BC means it has a fire fighting capacity equivalent to: 2.5 Gallons of Water and 10 Square Feet for a BC Type Fire.

What is the difference between 5BC and 10BC fire extinguisher?

In our tests, the 10BC units discharged only a fraction of a second longer than the 5BC, hardly “twice” anything. The 10BC, on average, discharged only 25% more fire suppressant than the 5BC.

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How much space must be clear around a fire extinguisher?

Most authorities having jurisdiction (AHJ) will expect at least 36-inches clearance in front of the extinguisher as long as it is still visible. They “borrow” this 36-inch clearance measurement from NFPA 70-2011, Article 110.26 for electrical control panels.

How do you determine how much fire extinguisher you need?

The calculation can be simplified by applying the rule of thumb that one 13A extinguisher covers 200 square metres of floor area. To calculate how many 13A extinguishers are required, divide the floor area by 200, and round up.

Tame a raging fire