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Flash Cards Practice

1. For equipment rated 1200 amperes or more and over 6 feet wide that contain over-current devices, there shall be one entrance to and egress from the required working space mot less than _______ wide at each end of the working space.

Question 1 of 25

2. True or false: If fire alarm cable is abandoned, the accessible portions must be removed.

Question 2 of 25

3. In industrial establishments only, when a 200-ampere rated busway is tapped from a 600-ampere rated busway, what is the maximum permitted length of the 200-ampere busway where overcurrent protection is not provided for the 200-ampere busway?

Question 3 of 25

4. If a branch circuit served by 12 AWG conductors is protected by a 15-ampere circuit breaker, what kind of rating does it have?

Question 4 of 25

5. What is the minimum ampacity of the branch-circuit conductors used to supply a 7-1/2 hp, 240 volts, single-phase induction type, ca motor for continuous duty application?

Question 5 of 25

6. A least 1 receptacle outlet shall be accessible from the deck, balcony, or porch. The outlet shall not be located more than _______ above the deck, balcony, or porch.

Question 6 of 25

7. Underground service conductors that are not encased in concrete and that are buried 18 inches or more below grade shall have their location identified by a warning ribbon that is placed in the trench at least _____ inches above the underground installation.

Question 7 of 25

8. Continuous loads are loads that are expected to run for how many hours?

Question 8 of 25

9. What is the maximum continuous load for 16 AWG copper?

Question 9 of 25

10. In a multi-family dwelling unit, what is the demand factor percentage for 9 household electric clothes dryers?

Question 10 of 25

11. Non -metallic-sheathed cable shall be secured by staples, cable ties, straps, hangers, or similar fittings at intervals not exceeding __________ feet.

Question 11 of 25

12. What is the minimum clearance over residential driveways of overhead spans of open conductors of up to 300 volts to ground.

Question 12 of 25

13. Outlet boxes that do not enclose devices or utilization equipment shall have a minimum internal depth of _________ inch.

Question 13 of 25

14. What is the minimum separation for over-head communications wires and cables at any point in the span from the supply service-drops of up to 750 volts?

Question 14 of 25

15. True or false: The raceway fill limitations detailed in 300.17 will apply to coaxial cables.

Question 15 of 25

16. What is the minimum volume, in inches, required for a two (2) gang device box that is to contain two (2) size 14/2 AWG with a ground NM cables and two (2) size 12/2 AWG with ground NM cables connected to a duplex receptacle connected to a single-pole switch, which also contain four (4) cable clamps?

Question 16 of 25

17. Nonmetallic-sheathed cable shall be secured by staples, cable ties, straps, hangers or similar fittings within _______ inches of every cabinet, box or fitting.

Question 17 of 25

18. For a building or structure where the meter enclosure is adjacent to the service disconnecting means, it is permitted to ground the meter enclosure to the _____ conductor on the load side of the service disconnect if ground-fault protection is not provided.

Question 18 of 25

19. Receptacles in health care facilities that have isolated grounding terminals as described in 250.146(D) are allowed in the vicinity of patient care areas.

Question 19 of 25

20. What is the minimum size AWG for festoon lighting?

Question 20 of 25

21. True or False: It is permissible to attach, strap, or tape power-limited fire alarm cables to the exterior of a conduit or raceway.

Question 21 of 25

22. When a galvanized eye-bolt is to be used as the point of attachment for an electrical service, the NEC requires the eye-bolt to be installed NOT less than _____ above finished grade.

Question 22 of 25

23. Required 125-volt,15- and 20-ampere receptacles in dwelling units shall not be located higher than _______ feet above the floor.

Question 23 of 25

24. If a panel is slash rated 480/277v what type of rating(s) are the breakers required to have?

Question 24 of 25

25. When a 20-ampere branch circuit serves a single receptacle outlet, the rating of the receptacle generally must be at least:

Question 25 of 25


 

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