Fire extinguishers are specified according to the hazards in a building and the fire-class markings on each unit. Fire extinguisher types differ by agent and rating, so compare the label with the materials and equipment in the area. In the United States, local fire codes and the authority having jurisdiction determine required coverage and placement.

Fire Extinguishers

A small fire extinguisher holds less agent and generally has a shorter discharge time than a larger model; check its rated capacity against the coverage needed. During a fit-out or replacement, follow the manufacturer’s instructions for mounting and inspection, and make sure the extinguisher can be reached without moving furniture or stored items.

How do fire cylinder types differ?

Compare the extinguishing agent and fire-class markings on the label; the cylinder’s shape does not identify the fires it is rated for. Follow the manufacturer’s instructions when specifying a replacement.

What should an electrical fire cylinder be rated for?

For energized electrical equipment, specify an electrical fire extinguisher marked Class C. Check for additional fire-class ratings when other hazards are present in the room.

Where should a fire extinguisher sign go?

Place it where people can see it as they approach the extinguisher, including when a cabinet or partition hides the unit. Keep the route to the extinguisher clear.