EWR 114

What is the diameter of a T8 Lamp in inches

1 Inch (Divide by 8)

Per the NEC, the open circuit voltage for electrical dishcarge lighting systems shall not exceed ______ Volts when installed in dwelling occupancies.

1,000

According to the NEC, recessed luminaires that are not identified for contact with insulation shall have all recessed parts at least ______ inches from combustible material.

1/2

Branch Circuit conductors must be rated 90 C if run within ______ inches of a ballast.

3

A 21 Degree Farenheit temperature rise above the rated temperature of any electrical equipment (Ballast, motors, transformers, etc.) will shorten the life of the equipment by ______%

50

A 100 Watt Incandescent lamp converts about _____% of its 100 Watts into visible light?

7

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.

Ballast

In addition to the NEC requirements, some areas have ______ requirements for energy conservation that also affect luminaire selection.

Building Code

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

Built-in

Overheating of luminaires which often results in fires is most often caused by ______?

Burying recessed luminaires under thermal insulation and overlamping

Incandescent dimmers can be used to control fluorescent luminaires. True or False?

False

When lamp 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

Which lighting system generally performs poorly in low temperatures?

Fluorescent

HID is an acronym for?

High Intensity Discharge

Luminaire is a term that refers to _______

Incandescent Lighting Fixtures, Fluourescent lighting fixtures, outdoor pole mounted fixtures.

A Luminaire consists of______ and ______

Lampholder and Lamp

Radio Waves have a relatively _____ wavelength

Long

The International term for a lighting fixture is _______?

Luminaire

The Inverse Square Law is important in determining the ______

Number of luminaires in a ceiling and mounting heights of luminaires.

A footcandle is equal to _______ per square foot.

One Lumen

Fluorescent ballasts contain thermal protectors that will open the circuit to prevent ______

Overheating

PAR is an acronym for

Parabolic Aluminized Reflector

Cosmic rays have a relatively ____ wavelength

Short

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

Shorter

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

Fluorescent lamps will have a longer life, in hours, if ______

They are frequently switched off.

An integral thermal protector for recessed luminaires will automatically restore power once the luminaire has cooled. True or False?

True

In general , the only conductors permitted to run in to or through a luminaire or integral junction box on a recessed luminaire are those supplying that luminaire. Other conductors are permitted to run through 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

Operatin gonly on elamp on a two lamp fluorescent ballast will damage the ballast. True or False?

True

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

Recessed Luminaires constructed for installation in thermal insulation are rated ______?

Type IC

What is the significance of the 6 foot fixture wire 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.