I learned a few things worth remembering today. A standard 5lb fire extinguisher has about 14 seconds of charge. A 10lb cannister has about 22. They're most effective when the fire has first started. You should NEVER use a dry-chemical extinguisher on a person as it will cause more pain than the fire itself. If they have burns it can get in and cause very bad infections. If they have cuts it will be very painful for a long time afterward. A Co2 extinguisher could injure someone due to extreme cold.
As long as we're talking differences, a chemical extinguisher is good for trash, chemical and electrical fires. A Co2 extinguisher is good for chemical and electrical fires but not trash because the force of the pressure will blow around the flaming debris before putting them out. However, it's better for an electronics fire because the dry chemicals in the other kind is very corrosive and will likely ruin delicate equipment.
Everyone understand all that? There will be a quiz on it later.
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Current Mood: my foot is on fire!