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

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

The box must be at least 2" deep.

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

The box must be installed flush to the wall surface.

Question 1 of 15

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

Question 2 of 15

3. 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).

60"

56"

30"

48"

Question 3 of 15

4. 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 4 of 15

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

Octagon and round boxes

Aluminum boxes with threaded hubs

Handy boxes

NM device boxes

Question 5 of 15

6. 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 6 of 15

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

1-1/2"

1/4"

1/2"

1-1/4"

Question 7 of 15

8. 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?

48"

64"

56"

40"

Question 8 of 15

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

Locating the box in a wet area

The addition of box extension rings

The use of cable clamps

The shape of the box

Question 9 of 15

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

three receptacles

four receptacles

two receptacles

one receptacle

Question 10 of 15

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

Each fixture stud

Each looped conductor over 12"

Each looped conductor over 6"

Each cable clamp

Question 11 of 15

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

14"

20"

Question 12 of 15

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

utility box

round box

masonry box

square box

Question 13 of 15

14. 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?

U pull

Angle pull

Straight pull

Circle pull

Question 14 of 15

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

nonmetallic device box with integral nails

masonry box

nonmetallic device box with side bracket

metallic octagon box

Question 15 of 15

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