Specifications

P87-AT WITH P8009-60
Report No. 98190
No. Lamps: 1 Type Lamp: 75A19 Total Lumens: 1190
Fixture Efficiency: 49.7%
S/MH Ratio: 1.3
Single Fixture Data
Ceiling
Ht.(Ft.)
10% Values
Ft.-C Beam Dia.
Zero
Degrees
Ft.-C
50% Values
Ft.-C Beam Dia.
Ft.-C (Footcandles) are initial and measured 2'-6" from floor
16 0.1 42 0.9 0.4 18
14 0.1 35 1.2 0.6 15
12 0.2 29 1.8 0.9 13
10 0.3 23 2.9 1.4 10
8 0.5 17 5.3 2.7 7
Beam Angle - 114 Beam Angle - 67
Quick Calculator Charts
0 100 200 300 400 500
0
4
8
12
16
20
Initial Footcandles
2'6" from floor
Area per Fixture (sq. ft.)
Room Reflectances: 80% Ceiling, 50% Wall, 20% Floor
Ceiling Ht.= 9 ft.
Medium Room - RCR=5.0
120 to 200 square foot area
0 100 200 300 400 500
0
4
8
12
16
20
Initial Footcandles
2'6" from floor
Area per Fixture (sq. ft.)
Room Reflectances: 80% Ceiling, 50% Wall, 20% Floor
Ceiling Ht.= 10 ft.
Large Room - RCR=2.0
1500 to 2500 square foot area
5
15
25
35
45
55
65
75
85
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
DISTRIBUTION CURVE INTENSITY DATA
161
160
159
157
154
150
144
138
130
121
113
104
94
84
73
62
50
38
0
70 50 30 10 70 50 30 10 50 30 10 50 30 10 50 30 10 0
80 70 50 30 10 0
RW
RC
10
9
8
7
6
5
4
3
2
1
0
Effective Floor Cavity Reflectance 0.20
ZONAL CAVITY COEFFICIENTS OF UTILIZATION
59 59 59 59 58 58 58 58 55 55 55 53 53 53 51 51 51 50
53 50 47 44 51 48 46 44 46 44 42 44 42 41 42 41 40 39
47 42 38 35 46 41 38 34 39 36 34 38 35 33 36 34 32 31
43 37 32 28 41 36 32 28 34 31 28 33 30 27 32 29 27 25
39 32 27 24 38 31 27 23 30 26 23 29 26 23 28 25 22 21
36 29 24 20 34 28 23 20 27 23 20 26 22 19 25 22 19 18
33 26 21 17 32 25 21 17 24 20 17 23 20 17 22 19 17 16
30 23 18 15 29 23 18 15 22 18 15 21 18 15 20 17 15 14
28 21 17 13 27 21 16 13 20 16 13 19 16 13 19 16 13 12
26 19 15 12 26 19 15 12 18 15 12 18 14 12 17 14 12 11
25 18 14 11 24 17 13 11 17 13 11 16 13 11 16 13 11 10