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Flashcards in Lighting Deck (20)
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1

High output LED

bright, little energy, white light, Dim with low voltage dimmer ex. 4 watts on PDP

2

Should you dim Flourescents

No

3

What kind of light is Xenon and attributes

Incandescent - dimmable, warm, heat

4

If sconce is placed over furniture does the 4" projection matter?

No

5

Beam spreads

R - wide (avail in flood and spot)
ER - more efficient throw
PAR - tighter (avail in flood and spot)
MR16 - Narrowest beam spread (very narrow to medium with spread)

6

Low voltage incandescent is goo for ....

Energy efficient for lighting small or large objects at a distance

7

Critical zone for direct glare

45 degrees

8

If reflected glare interferes with the viewing task it is also called

veiling reflection

9

Contrast

Drama, interest, emphasis - too much is difficult for fine detail

10

Uniformity

Perception = comfort and pleasant

11

Colour

affect comfort and impression

12

GU-24

Fluorescent - high efficiency CFL

13

T-8, T-5

higher efficiency and better CRI than some fluorescents

14

HID

Mercury Vapour
Metal Halide

15

Where would you use Mercury Vapour?

Outdoor/Industrial - Blue/green light with bad CRI

16

Where would you use Ceramic Metal Halide?
Describe metal halide

Ceramic metal halide - for high ceilings where long life and high efficacy are desirable - retail point source control
Difficult to dim
Time to warm up

Metal Halides - main disadvantage is colour shift over time

17

Best colour temp for office

3500

18

Where should you spec auto occupancy lighting controls?

In all spaces not regularly occupied
1. Copy rooms
2. Storage rooms
3. Restrooms

19

Daylight responsive controls w/i.....

15' of windows/skylights

20

1. Height of pendant over dining table in Res?
2. Office conference table
3. Open office
4. Pendants over counters (workroom, reception, kitchen)
5. Sconces in bathroom
6. Pendants over eating surface
7. Art light

1. Dining table 66"-72"
2. Office conference table - 80" AFF
3. Open office - 90" (7'-6") uno in fixture cut sheet
4. Over counters 80"-84"
5. 5'-6' - 60"-66" is best but depending on sconce size
6. 2'-6"-3'-0"
7. 5'-6"