Deck 7: Luminaires, Ballasts, and Lamps

Question 1

Electronic ballasts are much more ____________________ than the magnetic ballasts

Answer 1

energy efficient

Question 2

Leaving fluorescent lamps on for long periods of time ____ lamp life.

A) shortens
B) extends

Answer 2

B

Question 3

In general, the only conductors permitted to run into or through a fixture body or integral junction box on a recessed fixture are those supplying that fixture. Other conductors are permitted to run through the fixture body or outlet box only when the lighting fixture is marked "____________________".

Answer 3

Identified for Through Wiring
Identified for Through-Wiring

Question 4

The "T" in fluorescent lamp ratings refers to the lamp diameter, in 1/8 inch increments. Thus, a T12 lamp is ____ inch(es) in diameter and an T8 is ____ inch(es).

A) 1, 1/2
B) 1-1/4, 3/4
C) 1-1/2, 1
D) 1-3/4, 1-1/4

Question 5

The National Electrical Code does not address the issue of "spill lighting" or "light pollution" from one property to another because unwanted illumination is not a(n) ____________________ issue. However, building codes sometimes have rules on this subject.

Question 6

Information about what types of lighting fixtures are suitable for which types of installations can be found in the ____.

A) National Electrical Code
B) UL Guide Information for Electrical Equipment (White Book)
C) UL Electrical Construction Materials Directory (Green Book)
D) all of the above

Question 7

Fixture whips used with fixtures in suspended ceilings are permitted to be of various types of cables or conductors in flexible raceways. Regardless of the wiring method used, fixture whips are permitted to be a maximum of ____ long between outlet box and fixture.

A) 3 feet
B) 4-1/2 feet
C) 6 feet
D) 6 feet 7 inches (2 meters)

Question 8

Overheating of lighting fixtures, which often results in fires, is most often caused by ____.

A) burying recessed fixtures under thermal insulation
B) failure to ground metal fixture bodies properly
C) overlamping
D) both a and c

Question 9

The higher the ____________________ of a ballast, the more energy efficient.

Question 10

Recessed lighting fixtures constructed for installation in thermal insulation are rated as ____.

A) UL
B) Type IC
C) Type R
D) Class P

Question 11

LEDs have a life expectancy of ____ hours.

A) 600-1000
B) 6,00-10,000
C) 60,000-100,000
D) 600,000-1,000,000

Question 12

Which of the following lamp types generally performs badly in low temperatures?

A) incandescent
B) fluorescent
C) metal halide

Question 13

Fluorescent lamps are color-rated in terms of degrees Kelvin, which express temperature above absolute zero (-273°F). The ____ the degrees Kelvin, the ____ the color tone.

A) lower; cooler
B) higher; warmer
C) lower; warmer
D) cooler; higher

Question 14

The NEC requires that when a suspended ceiling grid is used to support lay-in type lighting fixtures, ____.

A) the grid be securely fastened together and secured to the building structure
B) the lay-in fixtures be securely fastened to the grid members using bolts, screws, rivets, or listed clips
C) the fixtures be Class P rated
D) both a and b

Question 15

Luminaire is a term that refers to ____.

A) incandescent lighting fixtures
B) fluorescent lighting fixtures
C) outdoor pole-mounted fixtures
D) all of the above

Question 16

Ballasts are sound rated and are marked with letters "____________________" through "____________________."

Question 17

Fluorescent fixtures mounted on low-density cellulose fiberboard must generally be mounted ____ the fiberboard surface.

A) 1-1/2 in. (38 mm) from
B) on strut-type channels or rod-type hangers below
C) with a backboard of fire-resistant material between the fixture and
D) none of the above

Question 18

When making up cord connections on a chain-hung fixture, the conductor with the grooved or raised insulation is the ____ conductor.

A) ungrounded
B) grounding
C) identified
D) switch leg

Question 19

A(n) ____ is NOT a type of fluorescent ballast.

A) pre-heat
B) rapid start
C) instant start
D) capacitor-boost

Question 20

A cluster of LEDs is called a(n) ____________________.

Question 21

Various lamps have particular characteristics, even though they will vary by manufacturer. Match the type of lamp with the typical color associated with it.
a.White
b.Warm and natural
c.Soft warm white
d.Brilliant white
e.Many shades of white
Compact fluorescent

Question 22

Briefly explain an advantage and a disadvantage of operating an incandescent lamp at a voltage lower than the lamp's voltage rating.

Question 23

Explain what is meant by a Class P ballast.

Question 24

Various lamps have particular characteristics, even though they will vary by manufacturer. Match the type of lamp with the typical color associated with it.
a.White
b.Warm and natural
c.Soft warm white
d.Brilliant white
e.Many shades of white
Fluorescent

Question 25

The most common type of lamp used in residential lighting is ____________________, because it brings out pleasing flesh tones.

Question 26

Various lamps have particular characteristics, even though they will vary by manufacturer. Match the type of lamp with the typical color associated with it.
a.White
b.Warm and natural
c.Soft warm white
d.Brilliant white
e.Many shades of white
Incandescent

Question 27

Discuss where the branch circuit is installed when wiring lighting fixtures.

Question 28

Various lamps have particular characteristics, even though they will vary by manufacturer. Match the type of lamp with the typical color associated with it.
a.White
b.Warm and natural
c.Soft warm white
d.Brilliant white
e.Many shades of white
Halogen

Question 29

Lighting fixtures are often supplied with separate trims, lenses, diffusers, etc. Discuss how this relates to NEC 110.3(B).

Question 30

What is the advantage of LED lighting?

Question 31

All fluorescent ballasts other than simple reactance type, both for new and replacement installations, must have ____________________ built into the ballast.

Question 32

Various lamps have particular characteristics, even though they will vary by manufacturer. Match the type of lamp with the typical color associated with it.
a.White
b.Warm and natural
c.Soft warm white
d.Brilliant white
e.Many shades of white
LED

Question 33

Provide a Code reference that prohibits the use of neon lighting in residences.