REDO ARTICLE ^_^.

CHOOSE THE RIGHT HART HAD

1. Head protection is required if you work where there is risk of injury from failing object or if you work near exposed electrical conductors which could contact the head.
2. Hard hats are designed to protect you from impact and penetration caused by objects hitting your head and from limited electrical shock or burns.
3. The shell of the hat is designed to absorb some of the impact. The suspension, which consists of the headband and strapping, is even more critical for absorbing impact. It must be adjusted to fit the wearer and to keep the shell a minimum distance of one inch above the wearer’s head.
4. Hard hats are tested to withstand the impact of an 8 pound weight dropped 5 feet-that’s about the same as 2 pound hammer. Dropped 20 feet and landing on your head.
5. Be sure to wear the right hard hat for the job. Hard hats come in three classes:

• Class A -   Made from insulating material to protect you from falling objects & electric shock by voltage of up to 2,200 volts.
• Class B -   Made from insulating material to protect from falling objects & electric shock by voltages of up to 20,000volts.
• Class C -  Designed to protect from falling objects, but are not designed for use around live electrical wires or where corrosive substances are present.