An extinguisher weighing over 40 lbs should be installed so the top is no more than how many feet from the ground?

An extinguisher weighing over 40 lbs should be installed so that the top is no more than 3.5 feet from the ground to ensure that it is easily accessible in an emergency situation. The reasoning behind this height restriction is primarily related to usability and safety; larger extinguishers can be cumbersome, and placing them at a height greater than 3.5 feet may make them difficult for many people to reach quickly.

This height limit also accommodates a wide range of users, considering that not everyone will be able to reach higher placements effectively. By following this guideline, users can ensure that they can operate the extinguisher without undue strain or difficulty, thus promoting a safer and more effective response to fire emergencies.