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Flash Cards Practice

1. 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 1 of 25

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

Question 2 of 25

3. Flexible metal conduit or liquid tight flexible metal conduit not exceeding ______feet in length shall be permitted to be employed for raceway connection to a motor terminal enclosure.

Question 3 of 25

4. Tap conductors supplying a transformer not over 25' in length, the tap conductor shall have an ampacity rating of at least ________ the rating of the overcurrent protective device.

Question 4 of 25

5. Where a cable- or raceway-type wiring method is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than ______ inches from the nearest edge of the wood member.

Question 5 of 25

6. General lighting in dwelling units is requires to have at least _______ VA.

Question 6 of 25

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

Question 7 of 25

8. 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 8 of 25

9. Why is electrical continuity required for metallic conduit?

Question 9 of 25

10. Overhead service -drop conductors shall have a vertical clearance of not less than _______ feet above the roof surface.

Question 10 of 25

11. The length of a pull box containing conductors of size 4 AWG and larger shall not be less than _____ times the trade diameter of the largest conduit entering the box when a straight pull of the conductors is to be made.

Question 11 of 25

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

Question 12 of 25

13. For general lightning in restaurant occupancies, a unit load of at least ________ VA per square foot is required.

Question 13 of 25

14. What is the minimum computed branch circuit load, in volt-amps, allowed by the NEC for a branch circuit serving an exterior electric sign, when calculating a building or structure's total load?

Question 14 of 25

15. What is the allowed demand factor to be applied for the name-plate rating load of four (4) or more fastened in place water heaters placed in a multi-family dwelling unit, when apply the standard calculation method for dwellings?

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. For installations to supply only limited loads of a single branch circuit, the branch circuit disconnecting means shall have a rating of not less than _________.

Question 17 of 25

18. What is the minimum size for single conductors in cable tray as a service entrance.

Question 18 of 25

19. True or false: It is permissible to use a metal pole supporting a sign cabinet or sign system to enclose the supply conductors.

Question 19 of 25

20. In church occupancies, the required unit load is at least ________ per square foot for general lighting.

Question 20 of 25

21. Receptacle outlets are permitted to be mounted no more than ____ in. below the countertop in a dwelling unit for the physically impaired

Question 21 of 25

22. What is the maximum number of disconnecting means per supply?

Question 22 of 25

23. The load for household electric clothes dryers in a dwelling unit(s) shall be _______ watts (volt-amperes) or the nameplate rating, whichever is larger, for each dryer served.

Question 23 of 25

24. LFMC must be fastened in place securely by approved means ________ inches or less of each box, cabinet, conduit body, or other conduit termination. Exceptions ignored.

Question 24 of 25

25. Receptacles are not allowed to be installed horizontally.

Question 25 of 25


 

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