2. What is the minimum size THW copper conductor that may be used on a 30-ampere branch circuit?

3. Heavy-duty type lampholders are required on branch-circuits having a rating in excess of:

4. What is the maximum continuous load (in amperes) that can be used on a 240-volt, 20- ampere circuit using two No. 12 AWG conductors with THW insulation?

5. A 30-ampere branch circuit may supply fixed lighting units in:

6. Branch circuits in two-family or multifamily dwellings required for the purpose of central lighting, central alarm,  signal, communications, or other needs for public or commercial areas shall:

7. EMT must be supported within what distance from an outlet box, junction box, device box, cabinet, conduit body or other terminations?

8. All 125-volt, single-phase, 15- or 20-ampere receptacle outlets installed in bathrooms of dwelling units always require:

9. The NEC allows wall-switch controlled receptacles in dwelling units in lieu of lighting outlets in all habitable rooms except:

10. Insulated conductors of No. 6 or smaller intended for use as grounded conductors in a circuit must be either of the following colors:

11. Holes in wood studs for cables must be drilled in the center of the stud and a distance from the nearest edge of not less than:

12. Direct buried conductors and cables emerging from grade shall be protected by an enclosure or raceway a distance above ground of no less than:

13. Cable tray systems must not be used:

14. EMT shall be supported at least every:

15. The total equivalent bend in rigid conduit between pull points (outlet to outlet, fitting to fitting, or outlet to fitting) shall not exceed:

16. When a branch circuit feeds both noncontinuous and continuous loads, the circuit must be sized to accommodate 100% of the noncontinuous load plus what percent of the continuous load?

17. The branch-circuit load for a single 12-kilowatt (12 kW) electric range in a dwelling is:

18. A 20-ampere laundry circuit is always required in each:

19. How many receptacles are required in a residential hallway 12 feet in length?

20. How many receptacle outlets are required in a residential garage?

21. In what location must a 125-volt single-phase, 15- or 20-ampere receptacle be installed for the servicing of heating, air conditioning and refrigeration equipment?

22. A 125-volt single-phase, 15- or 20-ampere receptacle be installed for the servicing of heating, air conditioning and refrigeration equipment must be installed within what distance from the equipment?

23. A 125-volt single-phase, 15- or 20-ampere receptacle be installed for the servicing of heating, air conditioning and refrigeration equipment. The receptacle outlet shall not be connected to the ___ side of the equipment disconnecting means

24. How many lighting outlets must be installed at or near heating, air-conditioning, and refrigeration equipment in attics or underfloor spaces?

25. How are the lighting outlets installed at or near heating, air-conditioning, and refrigeration equipment in attics or underfloor spaces be controlled?

26. The lighting outlets installed at or near heating, air-conditioning, and refrigeration equipment in attics or underfloor spaces be controlled by a switch. Where must the switch be located?

27. Feeders containing a common neutral are permitted to supply how many sets of 3-wire feeders?

28. Feeders containing a common neutral are permitted to supply how many sets of 4-wire feeders?

29. Feeders containing a common neutral are permitted to supply how many sets of 5-wire feeders

30. Service conductors run above the top level of a window shall be permitted to be less than the _____ requirement.

31. Which one of the following voltages is not standard?

32. Where a feeder conductor supplies continuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus what percent of the continuous load?

33. Where a feeder conductor supplies continuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus 125% percent of the continuous load except?

34. What is the minimum load per each linear foot that must be allowed for show-window lighting?

35. What percent of fixed electric space heating loads must be used in calculating the total connected load on a branch circuit or feeder?

36. If four 12 kW electric ranges are used in a four-unit apartment complex, what is the total kW rating that must be used for all of these ranges in calculating the electric service?

37. If the apartment complex is expanded to include a total of 40 units with a 12 kW range in each, what is the total kW rating for all the ranges that must be used in calculating the electric service?

38. What demand factor is allowed for a commercial kitchen with one electric appliance?

39. When outside overhead wiring is used, with no messenger cable, what is the minimum size copper wire allowed for spans up to 50 feet?.

40. When outside overhead wiring is used, with no messenger cable, what is the minimum size aluminum wire allowed for spans up to 50 feet?

41. Where outdoor pendant-type lampholders have terminals that puncture conductor insulation to make contact with the conductor, what type of wire must the conductor be?

42. What is the minimum size conductor allowed for festoon lighting?

43. Receptacles installed on 15- and 20-ampere branch circuits must always be of what type?

44. What is the maximum voltage allowed to supply listed electric-discharge lighting in residences, hotels, motels and similar occupancies?

45. Receptacles and cord connectors that have equipment grounding conductor contacts must have those contacts:

46. The equipment grounding conductor contacts of receptacles and cord connectors must be grounded by:

47. When existing nongrounding types of receptacles need replacing, what type of receptacle must be used?

48. When receptacles are connected to circuits having different voltages, frequencies, or types of current (ac or dc) on the same premises, what precautions must be taken?

49. What location requires all 15- and 20-ampere receptacles to be protected with a ground fault circuit-interrupter?

50. Which one of the following is not allowed to supply branch circuits?