2. For exposed 480 VAC energized conductors and using NFPA 70E Table 130.2(C) or the Shock Protection Boundaries and PPE Fermilab Summary table for NFPA 70E, the Restricted Approach Boundary for shock protection is
a. 1 Inch
b. 7 Inches
c. 1 Foot
d. 3 Feet 6 Inches - ACCURATE ANSWER-c
3. ...
2. For exposed 480 VAC energized conductors and using NFPA 70E Table 130.2(C) or
the Shock Protection Boundaries and PPE Fermilab Summary table for NFPA 70E, the
Restricted Approach Boundary for shock protection is
a. 1 Inch
b. 7 Inches
c. 1 Foot
d. 3 Feet 6 Inches - ACCURATE ANSWER-c
3. For energized circuits, escorted unqualified persons are allowed within which Shock
Protection Approach Boundaries?
a. Restricted Approach Boundary
b. Limited and Restricted Approach Boundaries
c. Limited Approach Boundary
d. Prohibited Approach Boundary - ACCURATE ANSWER-c
6. If an electrical circuit that normally operates above 50 volts has been de-energized
but not tested to verify that the circuit is in an electrically safe work condition, which of
the following apply?
a. Requirements associated with Shock Protection Boundaries must be followed
b. Requirements associated with the Flash Protection Boundary must be followed
c. NFPA 70E does not require a written Energized Electrical Work Permit for performing
LOTO voltage verification testing
d. All of the above apply - ACCURATE ANSWER-d
, 8. Voltmeter testing of a 480 VAC 3 Phase Circuit to verify that the circuit is OFF
typically involves
a. 3 measurements of phase to phase voltage
b. 3 measurements of phase to ground voltage
c. 3 measurements of phase to neutral voltage
d. All of the above measurements are necessary - ACCURATE ANSWER-d
9. What is the maximum use voltage of Class 0 rubber insulating gloves?
a. 500 Volts AC
b. 1,000 Volts AC
c. 7,500 Volta AC
d. 26,500 Volts AC
e. 36,000 Volts AC - ACCURATE ANSWER-b
10. A primary factor relating to serious arc-flash is
a. High voltage
b. Available fault current
c. Presence of supervisors during the arc-flash event
d. Ambient temperature - ACCURATE ANSWER-b
11. When performing electrical work that involves exposure to circuit parts or wiring that
are either energized or have not been tested and found to be de-energized, it is most
important to:
a. Understand and protect yourself from the shock hazard
b. Understand and protect yourself from the arc-flash hazard
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