Lytecaster
®
Recessed Downlighting 1170M1
Page 2 of 2 6 3/4" Aperture Basic White Reflector Reflector Trim
Job Information Type:
Lightolier a Genlyte company www.lightolier.com
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2007 Genlyte Group LLC • E0507
To convert lighting data for a lower wattage incandescent lamp of the same type, multiply the footcandle (or candlepower) values by the ratio of the lumens of the two lamps.
The coefficients of utilization remain the same.
Conversion Factors: 2 Lt. 13W Quad Tube, C. U. x 0.40, 1 Lt. 13W Qyad Tube, C. U. x
0.45. 75W A19, C. U. x 0.50.
80 70 50 30 10
% WALL REFLECTANCE
50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
1 1.09 1.06 1.04 1.07 1.04 1.02 1.03 1.01 .99 .99 .97 .96 .96 .94 .93 .91
2 1.00 .96 .92 .99 .94 .91 .95 .92 .89 .92 .90 .87 .90 .87 .85 .83
3 .92 .87 .82 .91 .86 .82 .88 .84 .80 .86 .82 .79 .83 .80 .78 .76
4 .85 .79 .74 .84 .79 .74 .82 .77 .73 .80 .76 .72 .78 .74 .71 .70
5 .79 .72 .67 .78 .71 .67 .76 .70 .66 .74 .69 .66 .73 .69 .65 .64
6 .73 .66 .61 .72 .66 .61 .70 .65 .61 .69 .64 .60 .68 .63 .60 .58
7 .67 .60 .56 .66 .60 .55 .65 .59 .55 .63 .58 .54 .62 .58 .54 .53
8 .62 .55 .51 .61 .55 .50 .60 .54 .50 .59 .54 .50 .58 .53 .50 .48
9 .57 .51 .46 .57 .50 .46 .56 .50 .46 .55 .49 .45 .54 .49 .54 .44
10 .53 .46 .42 .52 .46 .42 .51 .46 .42 .51 .45 .41 .50 .45 .41 .40
20% FLOOR CAVITY REFLECTANCE
ROOM CAVITY RATIO
SPACING RATIO = 0.9
RECESSED LYTECASTER DOWNLIGHT,
5 1/2” DIA. APERTURE, BASIC PERMA-WHITE
ONE PHILIPS 85W BR30 FLOOD LAMP,. LUMEN RATING = 925 LMS.
ANGLE MEAN CP LUMENS
0 678
5 670 36
10 642
15 582 164
20 502
25 428 200
30 369
35 322 203
40 281
45 223 167
50 136
55 70 71
60 42
65 30 31
70 23
75 16 17
80 9
85 5 6
90 2
ZONE LUMENS % LAMPS % LUMINAIRE
0-30 426 46.14 46.29
0-40 629 68.09 68.32
0-60 868 93.89 94.20
0-90 922 99.68 100.00
40-90 292 31.58 31.68
60-90 53 5.78 5.80
90-180 0 .00 .00
0-180 922 99.68 100.00
** EFFICIENCY = 99.7% **
DATE: DATE APRIL 10, 1997
PREPARED FOR:
LIGHTOLIER, FALL RIVER, MA
200
400
600
0
30
60
90
180 150 120
ACROSS
45
ALONG
10 20 30 40 50 60 70 80 90
3 4 5 6 7 8 9 10
CENTER TO CENTER DISTANCE OF FIXTURES IN FEET
AREA PER FIXTURE IN SQUARE FEET
60
50
40
30
20
10
AVERAGE INITIAL FOOTCANDLES
ROOM SURFACE REFLECTANCES:
80% Ceiling; 60% Walls; 20% Floor
925 Lumens Per Lamp
Large Room (RCR=1)
Small Room (RCR=5)