Handle the Hazards

Being familiar with the OSHA requirements for electrical safety is everyone’s responsibility. Many OSHA electrical requirements are extracted from the National Electrical Code.

1. In addition to covering the hazards arising from the use of electricity at job sites, regulations in OSHA 29 CFR 1926 also cover the hazards arising from accidental contact, direct or indirect, by employees with all energized lines, above or below ground, passing through or near the job site.

Correct Answer: True

2. The minimum required clear distance for exposed live parts on one side of the working space and no live or grounded parts on the other side is _______ feet for 150V to ground.

Correct Answer: 3

3. The minimum required clear distance for exposed live parts on one side of the working space and grounded parts on the other side for 151V–600V is _______ feet.

Correct Answer: 3 1/2

4. How much headroom is required in working spaces around service equipment, switchboards, panelboards and motor control centers?

Correct Answer: 6 ft. 3 in.

5. Live parts of electric equipment operating at 50V or more shall be guarded against accidental contact by cabinets or other forms of enclosures, or by an elevation of _______ feet above the floor or other working surface to exclude unqualified persons.

Correct Answer: 8

6. Electrical installations having exposed live parts shall be accessible to only _______.

Correct Answer: Qualified persons

7. According to OSHA, an example of a grounded surface on the other side of the work space is a wall constructed or covered with _______.

Correct Answer: Concrete, brick or tile

8. At least one entrance not less than _______ in. wide and 6 ft. 6 in. tall shall be provided to give access to the working space about electric equipment.

Correct Answer: 18

9. According to OSHA, no employer shall permit an employee to work in such proximity to any part of an electric power circuit that the employee could contact the electric power circuit in the course of work, unless the employee is protected against electric shock by deenergizing the circuit and grounding it or by guarding it effectively with insulation or other means.

Correct Answer: True

10. Extension cords may be fastened with staples, hung from nails or suspended by wire.

Correct Answer: False