installation of lighting equipment

A comprehensive set of question-and-answer flashcards covering light properties, lighting definitions, lamp types (incandescent, halogen, discharge, LED), and CE Code Section 30 installation and bonding requirements.

What is the range of electromagnetic wavelengths that make up visible light according to the notes?

$$400-700\,nm$$

Which color in the visible light spectrum has the longest wavelength?

Red

Which color in the visible light spectrum has the shortest wavelength?

Violet

How does an object appear if no light is given off or reflected from it?

Black

What value indicates what color of light a lamp will produce, measured in Kelvin?

Correlated color temperature (CCT)

What is the appearance of light from a lamp with a CCT of $5100\,K$?

Bluish (cool white)

What is the appearance of light from a lamp with a CCT of $2700\,K$?

Yellow-orange (warm white)

What index indicates how well a light source reproduces the actual colors of an object?

Colour rendering index (CRI)

What term is used to state the brightness of a light source, equivalent to the light from a standard candle?

Candela (cd)

What unit is used to measure the total quantity of light emitted in one second?

Lumen (lm)

Define the unit known as a 'lux'.

The amount of illumination on an area of one metre square where all points are one metre away from a one candela light source ($1\,lumen/m^2$)

How is the efficacy of a light source measured according to the documentation?

Lumens per watt ($lm/W$)

In the lighting industry, what is the specific definition of a 'lamp'?

A light bulb, fluorescent tube, compact fluorescent lamp, or other device that is a source of light, but not the entire fixture.

What is the term for a complete lighting fixture?

Luminaire

What component is required for an electric discharge lighting luminaire to produce light by starting the arc and limiting current?

Ballast

What are the two general types of ballasts?

Electromagnetic and Electronic

What is a luminaire canopy?

A removable cover that covers the outlet box where a luminaire's conductors connect to the branch circuit supply wires.

What material is the filament made of in a standard incandescent lamp?

Tungsten

What material is the bulb of a halogen lamp typically made of to withstand high temperatures?

Quartz

What types of lighting are classified under 'Electric Discharge Lighting'?

Fluorescent lamps and high-intensity discharge (HID) lamps.

Describe how a fluorescent lamp produces visible light.

Electric current excites mercury vapour which produces ultraviolet light; this hits the phosphor coating on the tube, causing it to glow in the visible spectrum.

What are the three common examples of HID lamps mentioned?

Mercury vapour, High-pressure sodium, and Metal-halide.

What is the typical luminous efficacy range for modern LEDs?

$$80\,to\,120\,lm/W$$

According to Rule 30-102, what is the maximum allowable voltage-to-ground for lighting in a dwelling unit?

$$150\,V$$

What is the maximum rating of an overcurrent device protecting a lighting circuit in a dwelling unit?

$$15\,A$$

To which terminal must the identified conductor be connected in a polarized luminaire?

The silver finished terminal (which connects to the screw shell).

According to Rule 30-318, can a luminaire suitable for wet locations be used in a damp location?

Yes

What two types of luminaires are strictly prohibited in clothes closets?

Pendant/Suspended type or Bare lamp type.

At what mounting height must a rigid luminaire be protected or guarded to prevent mechanical damage?

Less than $2.1\,m$

What is the maximum weight of a luminaire that can be supported by the screw shell of a lampholder?

$$2.7\,kg$$

What is the maximum weight of a ceiling luminaire permitted to be supported directly by an outlet box mounted on a bar hanger?

$$23\,kg$$

What are the clearance requirements for a 'Type Non-IC' recessed luminaire?

$13\,mm$ from combustible material and $76\,mm$ from thermal insulation.

What does 'Type IC' stand for in recessed lighting?

Insulation Contact (can be blanketed with thermal insulation).

What is the minimum temperature rating for conductors supplying fixtures with ballasts?

$$90\,^{\circ}C$$

What is the minimum size of conductor allowed for general luminaire wiring?

$$18\,AWG$$

According to Rule 30-608, what is the minimum conductor size for pendant lighting supplying mogul or medium base lamps?

$14\,AWG$ stranded copper.