Chapter 114

The diameter of a T8 lamp is ___ inch(es).

1

According to the NEC®, the open circuit voltage for electrical discharge lighting systems shall not exceed ___ volts when installed in dwelling occupancies.

1000

The average rated life of a PS25 150 watt (150PS25/RS/STG) incandescent lamp (Order Code 72547) is ___ hours when operated at 130 volts.

1000

The mean lumens of a 150 watt Lucalox® (LU150) high-pressure sodium lamp (Order Code 44243) is ___.

13500

Old ballasts manufactured through ___ and those without a ___ label should be assumed to contain polychlorinated biphenyls (PCBs).

1979, "No PCBs"

When lamps with wattages greater than the rating of the luminaire are installed, a fire could occur because the luminaire is being overheated. (True or False)

True

A 40BM/RVL/CD2 incandescent lamp (Order Code 72780) has a shape as shown in Figure 114.401 at ___.

V

Repeated reference is made in EWR and the NEC® to limit the length of "fixture whips" to 6 feet. What is the significance of this 6-foot limitation?

When a wiring method is used (that is permitted to be longer than 6 feet for other than luminaire connections) "fixture whips" longer than 6 feet are required to be supported and grounded per the NEC ®for that wiring method.

Does the NEC® permit an MC cable that is 46 feet in lengthand properly secured to be installed between a 4"-square box and a 2-by-4 lay-in luminaire? (YES OR NO)

YES

In addition to National Electrical Code requirements, some areas have ___ requirements for energy conservation that also affect luminaire selection.

a building code

Repeatedly turning lamps "on" and "off" will cause the lamp to have ___ life than if it were left "on" for the same number of hours.

a shorter

LED is an acronym for ___.

Light Emitting Diode

PAR is an acronym (abbreviation) for ___.

Parabolic Aluminized Reflector

A 100 watt incandescent lamp converts about ___% of its 100 watts into visible light.

7

Used fluorescent lamps should ___.

All of the above: -be packaged in the same type of carton they came in -be in cartons with end secured with shipping tape -not be taped together -be stored secure, dry, under cover and in the cartons marked "Used Lamps"

Which of the problems listed below could cause a fluorescent lamp to have trouble starting?

All of these: -a lamp that is installed with one of the bi-pins outside the lampholder -a broken lampholder -a luminaire that is not properly grounded -an air temperature of around 50°F or less

In addition to other parts, a luminaire consists of a ___. I. lampholder II. lamp

BOTH I (lampholder) & II (lamp)

Section 410.36(B) in the NEC® requires that when a suspended ceiling grid is used to support lay-in type luminaires, ___. I. the grid be securely fastened together and secured to the building structure II. the lay-in luminaires be securely fastened to the grid members using bolts, screws, rivets, or listed clips

BOTH I (the grid be securely fastened together and secured to the building structure) & II (the lay-in luminaires be securely fastened to the grid members using bolts, screws, rivets, or listed clips)

Bulbs manufactured after November 30, 2003 contain no mercury. (True or False)

False

When lamps with wattages greater than the rating of the luminaire are installed, the light output will be diminished because the luminaire rating is less than that of the lamp. (TRUE OR FALSE)

False

What type of lamp is an F32-T8?

Fluorescent

HID is an acronym or abbreviation for ___.

High-Intensity Discharge

For a branch circuit supplying several fluorescent luminaires, in-line fuseholders with fuses that are installed in one of the luminaire enclosures will protect the ___ against overload. I. ballast II. branch circuit

I ONLY (ballast)

An integral thermal protector for recessed luminaires will automatically restore power once the luminaire has cooled. (TRUE OR FALSE)

True

Infrared radiation ___ be seen by the human eye.

can not

When removing lamps from a fluorescent fixture, be certain you ___.

do not break lamps and place in carton box

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

fluorescent

All of the following are types of incandescent lamp bases,except ___.

halogen

Radio waves have a relatively ___ wavelength.

long

What is the base type of a 175 watt Multi-Vapor® PAR38 metal halide lamp (Order Code 25218)?

medium screw

A footcandle is equal to ___ per square foot.

one lumen

Cosmic rays have a relatively ___ wavelength.

short

A luminaire is rated for a maximum of a 60 watt lamp. If a 100 watt lamp is installed, what might happen?

the luminaire may overheat and cause a fire

A Class P ballast has ___ thermal protection to prevent ballast overheating that could cause fires.

built-in

If a ballast is rated to operate at 277 volts but can tolerate (without damaging effects) a +5% to a -7% variation from this rated voltage then this acceptable voltage range is ___ to ___V.

290- 258

Branch circuit conductors must be rated at 90°C if run within ___ inches of a ballast.

3

A PS30 200 watt (200PS30RS/23/STG) incandescent lamp (Order Code 72548) has a diameter of ___ inches.

3.75

According to the NEC®, recessed luminaires (fixtures) that are not identified for contact with insulation shall have all recessed parts at least ___ from combustible materials.

1/2 inch

A PS30 200 watt (200PS30RS/23/STG) incandescent lamp (Order Code 72548) delivers ___ watts when operated at 130 volts.

200

How many F42TBX/841/A/ECO 4-pin Triple Biax® compact fluorescent lamps (Order Code 97636) are required to put out enough initial lumens to equal or exceed that of four175 watt (MXR175/VBU/PA) PulseArc® Multi-Vapor® metal halide lamps (Order Code 22342)? Round UP to the nearest whole number. Initial lumen output values should be used.

22

The initial lumens of a PS30 200 watt (200PS30RS/23/STG) incandescent lamp (Order Code 72548) when operated at 130 volts is ___.

3240

A 21°F (10°C) temperature rise above the rated temperature of any electrical equipment (ballasts, motors, transformers, etc) will shorten the life of the equipment by ___%.

50

According to the NEC®, combustible material adjacent to luminaires (fixtures) cannot be subject to a temperature exceeding ___.

90°C

Overheating of luminaires (fixtures) which often results in fires is most often caused by ___.

BOTH A&B -burying recessed luminaires under thermal insulation -overlamping

The "inverse square law" is important in determining the ___. I. number of luminaires in a ceiling II. mounting heights of luminaires

BOTH: I-number of luminaires in a ceiling AND II-mounting heights of luminaires

Luminaire is a term that refers to ___.

Either: incandescent lighting fixtures, fluorescent lighting fixtures or outdoor pole-mounted fixtures

Luminaires are often supplied with separate trims, lenses, diffusers, etc. The NEC® at 110.3(B) states that "listed or labeled equipment shall be used or installed in accordance with any instructions included in the listing or labeling." This means that it is permitted to use the trim ring from a Halo luminaire on a Lightolier downlight. (TRUE OR FALSE)

FALSE

Incandescent dimmers can be used to control fluorescent luminaires. (TRUE OR FALSE)

False

A 25G25/W decorative-type incandescent lamp (Order Code 12982) has a shape as shown in Figure 114.401 at ___.

II

Ballasts should be disposed of ___. I. in the trash II. at a hazardous waste incinerator III. at a chemical waste landfill

II or III only: (II-at a hazardous waste incinerator or III-at a chemical waste landfill)

Fluorescent ballasts contain thermal protectors that will open the circuit (disconnect power) to prevent ___. I. short circuits II. ground faults III. overheating

III only (overheating)

Fluorescent lamps will have a longer life (in hours) if ___. I. they are cleaned frequently II. they are frequently switched "off" III. they are left "on" for long periods of time

III only (they are left "on" for long periods of time)

In general, the only conductors permitted to run into or through a luminaire or integral junction box on a recessed luminaire are those supplying that luminaire. Other conductors are permitted to run through the luminaire when the luminaire is marked "Identified for Through Wiring". (TRUE OR FALSE)

TRUE

Objects viewed under the light produced by a sodium lamp have colors that are distorted or not the same color as might be seen in direct sunlight. (TRUE OR FALSE)

TRUE

Operating only one lamp on a two-lamp fluorescent ballast will damage the ballast. (TRUE OR FALSE)

TRUE

Recessed luminaires (fixtures) constructed for installation in thermal insulation are rated as ___.

TYPE IC

A PS25 300 watt incandescent lamp (Order Code 73788) is

clear

The quantity of light emitted by a source (lamp) is measured in ___.

lumens

The international term for a lighting fixture is ___.

luminaire

Standard incandescent lamps, 60 watt A19s for example, are routinely used in residential ceiling-mounted luminaires. These lamps have a(n) ___ base.

medium