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1. According to NEC Section 210.52(C.(5. , the maximum mounting height for a receptacle installed above a kitchen countertop is ________.

14"

20"

Question 1 of 15

2. The special box used in a flat-slab construction job is known as a ________.

metallic octagon box

nonmetallic device box with side bracket

nonmetallic device box with integral nails

masonry box

Question 2 of 15

3. According to NEC Section 210.52 , laundry areas require at least ________.

two receptacles

three receptacles

one receptacle

four receptacles

Question 3 of 15

4. If a switch is used in a box where no grounding conductors are part of the wiring, how many conductors must be deducted?

Question 4 of 15

5. Two cables that each have two wires enter a box, are connected to a terminal, and then exit again. The total conductor count is ________.

Question 5 of 15

6. Which type of boxes are typically used for wall-mounted lighting fixtures?

NM device boxes

Aluminum boxes with threaded hubs

Handy boxes

Octagon and round boxes

Question 6 of 15

7. What size of a junction box must be used if there is one 4" conduit and two 3" conduits entering on one side of the box and exiting at a 90° angle on another side of the box? (asume the conductor size is No. 4 AWG or larger).

48"

56"

60"

30"

Question 7 of 15

8. Which of the following will cause the number of conductors allowed in a box to be reduced?

The shape of the box

The addition of box extension rings

Locating the box in a wet area

The use of cable clamps

Question 8 of 15

9. How many additional conductors (wires. must be deducted from a box that contains a maximum number of eight No. 12 wires and two spliced conductors?

Question 9 of 15

10. A handy box is a special single-gang box that is also known as a ________.

round box

masonry box

square box

utility box

Question 10 of 15

11. Which of the following pulls requires the length of the box to be no less than eight times the trade diameter of the largest raceway?

Circle pull

Straight pull

U pull

Angle pull

Question 11 of 15

12. Which of the following is a general NEC® requirement for installing boxes?

The box must be installed flush to the wall surface.

The finished installation must be accessible for future repair or maintenance.

The box must be at least 2" deep.

The box must be of a sufficient size to permit locknuts to be properly installed.

Question 12 of 15

13. Which of the following counts as two conductors when used in a box?

Each cable clamp

Each fixture stud

Each looped conductor over 12"

Each looped conductor over 6"

Question 13 of 15

14. What is the minimum length on a straight pull for a pull box with two 1" conduits and one 5" conduit on one wall, and two 1" conduits and one 5" conduit entering the opposite wall?

56"

40"

48"

64"

Question 14 of 15

15. The NEC® requires that all octagon boxes have a minimum depth of ________.

1/4"

1-1/2"

1/2"

1-1/4"

Question 15 of 15

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