Deck 17: Recreation Room

Question 1

Explain what the NEC requires to prevent lighting fixtures installed in suspended ceilings from falling.

Answer 1

NEC 410.36(B) requires that suspended ceiling framing members be securely fastened to each other, and must be securely attached to the building structure at appropriate intervals, and recessed luminaires must be securely fastened to the suspended ceiling framing members by bolts, screws, rivets, or special listed clips.

Question 2

In many cases, the use of a multiwire branch circuit can save money in that one 3-wire branch circuit will do the job of ____ branch circuits.

A) two single-wire
B) two 2-wire
C) three single-wire
D) three 2-wire

Answer 2

B

Question 3

Roughing-in recessed luminaires that will be installed between ceiling joists can be quite a challenge. The conflict is between the ____ in. on center joists and the 24 in. square acoustic ceiling panels and their metal "T" bars and supports.

A) 8
B) 12
C) 16
D) 20

Answer 3

C

Question 4

Receptacles installed within 6 feet of a wet bar are required ____.

A) to have GFCI protection
B) to not be installed face up in countertops or work surfaces
C) to be installed at least 6 inches above the countertop
D) both a and b

Question 5

A fixture whip is ____ ft (1.2 to 1.8 m) long and is installed between the junction box and the luminaire.

A) 1 to 2
B) 3 to 5
C) 4 to 6
D) 8 to 10

Question 6

If there is no dropped ceiling, or if the drop is not as much as the height of the recessed luminaires, you will find that the center-to-center spacing of recessed luminaires will have to be in increments of ____________________ ft.

Question 7

If marked "Suitable for Use in Suspended Ceilings," fluorescent luminaires are intended only for installation in suspended ceilings where the acoustical tiles, lay-in panels, and suspended grid are not part of the actual ____________________.

Question 8

Resistance of conductors may be found in NEC Chapter 9, ____________________.

Question 9

Lighting fixtures marked "Recessed Fluorescent Luminaire" ____ permitted to be installed in a suspended ceiling.

A) are
B) are not

Question 10

When connecting a multiwire (3-wire) circuit in the panel, care must be used to ensure that the two "hot"circuit conductors are connected to ____________________ in the panel.

Question 11

Conductors in a ____ fixture whip in a typical suspended ceiling "lay-in" fluorescent luminaire must have a temperature rating as required on the label in the luminaire.

A) rigid
B) flexible
C) split
D) suspended

Question 12

According to Ohm's law, the ____________________ across any device in a series circuit is directly proportional to the resistance of that device.

Question 13

All 15- and 20-ampere receptacles installed within 6 ft (1.8 m) of a ____ sink must be GFCI protected.

A) wet bar
B) laundry
C) utility
D) all of the above

Question 14

Recessed fluorescent luminaires are intended for installation in cavities in ceilings and walls and are to be wired according to Article ____________________.