All commercial occupancies are required to have a fire extinguisher.
For your home, it is a wise idea to have a fire extinguisher and know how to use it. The minimum size extinguisher should be 5 pounds and it should be rated, or have a classification of, at least 2A10BC. All this means to the average user is that this fire extinguisher is good for all fires found in a home. This size fire extinguisher only has 7 – 10 seconds of continuous use. If the fire extinguisher has been used, it should be replaced.