Ch 6 - Fire Extinguishers

Question 1

Class A

Answer 1

Ordinary combustibles (Class A fires)
1-A through 40-A (A = 1.25 gal of water)

Question 2

Class B

Answer 2

Flammable liquids (Class B fires)
1-B through 640-B (1-640 sqft of fire)

Question 3

Class C

Answer 3

Electrical fires (Class C)
Will not conduct electricity

Question 4

Class D

Answer 4

Combustible metals (Class D fires)
Magnesium, lithium, sodium

Question 5

Class K

Answer 5

Combustibles cooking oils
Saponification - convert fatty acids to form oxygen-excluding soapy film

Question 6

Extinguisher Selection

Answer 6

-classification of burning material
-rating of the extinguisher
-size/intensity of fire