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Page 2 of 2
100 Watt A-19
60
1750 Lumens Per Lamp
50
RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)
RCR = 5 (Rm. Width - 2 x Mtg. Ht. above work plane)
RCR = 10 (Rm. Width - Mtg. Ht. above work plane)
40
Room Surface Reflectances:
80% Ceiling; 50% Walls; 20% Floor
30
20
10
15
30
45
Area Per Fixture In Square Feet
3
4
5
6
7
Center To Center Distance Of Fixtures In Feet
Use quick calculator chart to determine spacing of luminaires for desired level of illu-
mination.
Conversion Factor: 100W A19 (gold): F.C. x 0.90
Spacing Ratio= 1.1
ITL REPORT NO. 31338
DATE 9-27-85
90
60
30
Lamp: 100 Watt A19
Efficiency: 58.5%
Coefficients of Utilization
%
Effective Ceiling Cavity Reflectance
80
70
% WALL REFLECTANCE
50 30 10
50
30 10 50
1
.65 .63 .62 .64 .62 .61 .61
2
.61 .59 .57 .60 .58 .56 .58
3
.57 .54 .52 .56 .54 .52 .55
4
.53 .50 .48 .53 .50 .48 .52
5
.50 .47 .44 .50 .47 .44 .49
6
.47 .44 .41 .47 .43 .41 .46
7
.44 .40 .38 .43 .40 .38 .43
8
.41 .37 .35 .41 .37 .35 .40
9
.38 .35 .32 .38 .34 .32 .37
10
.36 .32 .30 .35 .32 .30 .35
20% Floor Cavity Reflectance
Conversion Factor: For 100W A19 units with gold reflector, multiply C.U.'s by 0.9.
Calculite
60
75
90
105
8
9
10
Candlepower Summary
DEG
CP
ZONAL FLUX
0
559
13
5
575
43
10
641
83
15
769
135
20
852
177
25
775
165
30
507
114
35
307
89
40
245
91
45
259
95
50
120
9
55
6
1
60
2
0
65
2
1
70
0
0
75
2
1
80
1
1
85
0
1
ZONAL SUMMARY
ZONE
LUMENS
LAMP
FIXT
0- 30
617
35.4
60.6
0- 40
819
47.1
80.5
0- 60
1014
58.3
99.6
0- 90
1018
58.5
100.0
90- 180
0
0.0
0.0
0- 180
1018
58.5
100.0
Total Luminaire Efficiency =
58.5 %
CIE Type - Direct
Luminous Diameter: 4.500
50
30
10
0
30
10 50
30 10
50
30
10
0
.60 .59 .59 .58 .58 .57
.56 .56 .55
.56 .55 .56 .55 .54 .55
.54 .53 .52
.53 .51 .53 .52 .50 .52
.51 .49 .48
.49 .47 .50 .48 .47 .49
.48 .46 .45
.46 .44 .48 .45 .43 .47
.45 .43 .42
.43 .41 .45 .42 .41 .44
.42 .40 .39
.40 .38 .42 .39 .38 .41
.39 .37 .36
.37 .35 .39 .37 .35 .39
.36 .35 .34
.34 .32 .37 .34 .32 .36
.34 .32 .31
.32 .30 .34 .31 .30 .34
.31 .29 .29
®
Incandescent Open Downlight
Job Information
Lightolier
a Genlyte Thomas Company
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.
© 2002 Genlyte Thomas Group LLC (Lightolier Division) • A0902
4 1/2" Aperture A19 Lamp Horizontal
Type:
www.lightolier.com
G7057
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