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Electrical classes > Lighting Equipment > Flashcards

Lighting Equipment Flashcards

1
Q

The visible spectrum of light is between…

A

400 to 700 nm (nano meters)

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2
Q

A value that represents the colour of light a lamp will produce is known as…

A

correlated colour-temperature? (CCT)

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3
Q

A value that gives an indication of how well a light source reproduces the actual colours of an object is…

A

Colour rendering index (CRI)

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4
Q

What is a candela?

A

A candela is approximately the amount of light from a standard candle.

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5
Q

What is a lumen?

A

It is the measurement of the quantity of light.

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6
Q

What is a Lux?

A

It is the amount of illumination on an area of one meter square.

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7
Q

What is used to describe how effective a light source is at producing the desired light from a specific amount of power?

A

Efficacy (lm/W - lumens per watt)

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8
Q

What are the 3 main types of light sources?

A

1) Incandescent
2) Electric Discharge Lighting (fluorescent & high intensity discharge)
3) Light emitting diodes (LED)

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9
Q

What do all electric discharge lighting lamps require?

A

A ballast to start the arc in electric discharge tubes and limit the current flow through the vapour.

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10
Q

What are the two types of fluorescent lamps?

A

Linear lamps & compact fluorescent lamps

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11
Q

Compact fluorescent lamps can be both…

A

Integrated, meaning they are self-ballasted &

Non-integrated, meaning they require a separate ballast in the luminaire.

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12
Q

High intensity discharge lamps include…

A

Mercury vapour

High-pressure sodium and

Metal halide : Quartz & ceramic

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13
Q

What is a lamp?

A

A light bulb, fluorescent tube, a compact fluorescent lamp or other device that is a source of light.

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14
Q

A fixture or lighting fixture is called?

A

A luminaire

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15
Q

The part of a luminaire that physically holds the lamp in place and connects it to its electrical supply is called?

A

A lampholder

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16
Q

What are the two types of ballasts?

A

Electromagnetic ballasts - composed of electromagnetic coils

&

Electronic ballasts - composed of solid state components

17
Q

What is used to cover the outlet box where a luminaire’s conductors connect to the branch circuit?

A

A luminaire canopy

18
Q

What is a canopy switch?

A

It’s a small switch that controls the power to the lampholder of a luminaire that is commonly mounted to the luminaire.

19
Q

According to rule 30-104 protection, lighting circuits in dwelling units must be protected by an over current device rated at…

A

A maximum of 15 amps

20
Q

What does polarization of a luminaire mean?

A

That the identified conductor must be connected to the identified terminal or the identified conductor to the light fixture.

21
Q

What is the maximum allowable voltage to ground for a circuit in a dwelling unit?

A

150 volts

22
Q

Light is a form of?

A

Electromagnetic radiation

Electrical classes (5 decks)

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