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Page 2 of 2
100W A19
40
1700 Lumens Per Lamp
35
RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)
30
RCR = 5 (Rm. Width - 2 x Mtg. Ht. above work plane)
RCR = 10 (Rm. Width - Mtg. Ht. above work plane)
25
Room Surface Reflectances:
80% Ceiling; 50% Walls; 20% Floor
20
15
10
5
20
40
60
80
AREA PER FIXTURE IN SQUARE FEET
3
4
5
6
7
8
9
CENTER TO CENTER DISTANCE OF FIXTURES IN FEET
Use quick calculator chart to determine spacing of luminaires for desired level of
illumination. Conversion Factors: 150W A21; F.C. X 1.3
SPACING RATIO = 1.3
90
200
60
400
600
30
800
E.T.L, INC. REPORT NO. 385348-A
11-14-62
EFFICIENCY: 46.5%
COEFFICIENTS OF UTILIZATION
%
EFFECTIVE CEILING CAVITY REFLECTANCE
80
70
% WALL REFLECTANCE
50 30 10
50
30 10 50
1
.52 .51 .50 .51 .50 .49 49
2
.49 .47 .46 .48 .47 .45 .47
3
.47 .45 .43 .46 .44 .43 .45
4
.44 .42 .40 .44 .42 .40 .43.
5
.42 .39 .38 .41 .39 .38 .40
6
.40 .37 .36 .39 .37 .35 .39
7
.38 .35 .33 .37 .35 .33 .37
8
.35 .33 .31 .35 .33 .31 .35
9
.34 .31 .29 .33 .31 .29 .33
10
.32 .29 .28 .32 .29 .28 .31
20% FLOOR CAVITY REFLECTANCE
Conversion Factor: For 150W A21 units, multiply C.U.'s by 0.9
Calculite
®
Incandescent Open Downlight
100
120
140
160
180
10
11
12
13
14
Candlepower Summary
DEG
CP
ZONAL FLUX
2 1/2
555
13
7 1/2
665
48
12 1/2
745
88
17 1/2
755
124
22 1/2
685
144
27 1/2
595
151
32 1/2
427
126
37 1/2
197
66
42 1/2
59.0
22
47 1/2
16.2
7
52 1/2
3.2
1
ZONE
LUMENS
% LAMP
0-30
568
33.5
0-40
760
44.5
0-60
790
46.5
50
30
10
0
30
10 50
30 10
50
30
10
0
.48 .48 .47 .47 .46 .46
.45 .45 .44
.46 .45 .45 .44 .44 .44
.43 .43 .42
.43 .42 .44 .42 .41 .43
.41 .41 .40
.41 .40 .42 .40 .39 .41
.39 .39 .38
.39 .37 .40 .38 .37 .39
.38 .37 .36
.37 .35 .38 .36 .35 .37
.36 .35 .34
.35 .33 .36 .34 .33 .36
.34 .33 .32
.33 .31 .34 .32 .31 .34
.32 .31 .30
.31 .29 .32 .31 .29 .32
.30 .29 .29
.29 .28 .31 .29 .28 .31
.29 .27 .27
4 1/2" Aperture A19/A21/A23/MB19 Ellipsoidal Reflector
150W A23
60
2700 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
25
50
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
illumination.
SPACING RATIO = 1.2
90
200
60
400
600
30
800
E.T.L, INC. REPORT NO. 385349-1
12-06-62
EFFICIENCY: 38.5%
COEFFICIENTS OF UTILIZATION
%
EFFECTIVE CEILING CAVITY REFLECTANCE
80
70
% WALL REFLECTANCE
50 30 10
50
30 10 50
1
.43 .42 .41 .42 .41 .40 .40
2
.40 .39 .38 .40 .38 .37 .38
3
.38 .36 .35 .38 .36 .35 .37
4
.36 .34 .33 .36 .34 .33 .35
5
.34 .32 .31 .34 .32 .30 .33
6
.32 .30 .29 .32 .30 .29 .31
7
.30 .28 .27 .30 .28 .27 .30
8
.29 .27 .25 .29 .27 .25 .28
9
.27 .25 .24 .27 .25 .24 .27
10
.26 .24 .22 .25 .23 .22 .25
20% FLOOR CAVITY REFLECTANCE
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
782/7782
75
100
125
8
9
10
11
Candlepower Summary
DEG
CP
ZONAL FLUX
2 1/2
825
20
7 1/2
900
64
12 1/2
980
116
17 1/2
880
185
22 1/2
880
185
27 1/2
710
180
32 1/2
530
156
37 1/2
282
94
42 1/2
117
43
47 1/2
38.4
16
52 1/2
11.4
5
ZONE
LUMENS
% LAMP
0-30
727
27.0
0-40
977
36.0
0-60
1042
38.5
50
30
10
30
10 50
30 10
50
30
10
.40 .39 .39 .38 .38 .38
.37 .37 .36
.37 .37 .37 .37 .36 .36
.36 .35 .34
.35 .34 .36 .35 .34 .35
.34 .33 .33
.33 .32 .34 .33 .32 .33
.32 .31 .31
.31 .30 .32 .31 .30 .32
.31 .30 .29
.30 .29 .31 .30 .28 .30
.29 .28 .28
.28 .27 .29 .28 .27 .29
.28 .26 .26
.26 .25 .28 .26 .25 .28
.26 .25 .25
.25 .23 .26 .25 .23 .26
.24 .23 .23
.23 .22 .25 .23 .22 .25
.23 .22 .21
Type:
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