Knowing Who's Who

In my May Code Comments column, I wrote about the NEC and NFPA 70E definitions of a “qualified person.” Test your memory and your knowledge of this NEC term in the quiz below.

1. Qualified persons must possess ______.

Correct Answer: All of the above

2. The NEC indicates who performs electrical installations covered within its scope?

Correct Answer: False

3. Equipment and associated wiring and interconnections of solar photovoltaic systems are not required to be installed by qualified persons only.

Correct Answer: False

4. Performance testing of ground-fault protection of equipment must be performed by ______ when the equipment is first installed on the site.

Correct Answer: Qualified persons

5. Medium-voltage cable shall be installed, terminated and tested by qualified persons.

Correct Answer: True

6. The definition of qualified person in NFPA 70E Standard for Electrical Safety in the Workplace differs from the NEC definition of qualified person in relation to which of the following:

Correct Answer: Demonstrating knowledge and skills and identifying hazards and reducing associated risks

7. Based on NFPA 70E, and as it relates to electrical safety in the workplace, an unqualified person is ______.

Correct Answer: A person that is not a qualified person

8. Electrical hazards addressed by NFPA 70E are electric shock, arc flash and arc blast. Qualified persons must by trained to identify these hazards and reduce associated risks.

Correct Answer: True

9. In high-voltage switchgear and industrial controllers where access is required to a compartment that contains energized high-voltage parts, barriers shall be provided to prevent accidental contact by persons, tools or other equipment with energized parts. Exposed live parts shall be permitted only in compartments accessible to ______. Fuses and fuseholders designed to enable future replacement without de-energizing the fuseholder shall be permitted for use by ______ only. (Choose one.)

Correct Answer: Qualified Persons

10. The NEC does not define the term unqualified person.

Correct Answer: True

Advertisement

Advertisement

Advertisement