Specification Sheet

P87-AT WITH P8068-21A
Report No. 98087
No. Lamps: 1 Type Lamp: 40A19 Total Lumens: 505
Fixture Efficiency: 54.0%
S/MH Ratio: 1.4
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 35 0.6 0.3 19
14 0.1 30 0.9 0.4 16
12 0.1 24 1.3 0.7 13
10 0.2 19 2.1 1.0 10
8 0.4 14 3.9 2.0 8
Beam Angle - 104 Beam Angle - 69
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
118
117
119
148
146
131
119
105
91
78
64
32
13
4
1
0
0
0
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
65 65 65 65 63 63 63 63 60 60 60 58 58 58 55 55 55 54
61 59 57 56 59 58 56 55 56 54 53 53 52 52 52 51 50 49
57 53 51 48 55 52 50 48 51 48 47 49 47 46 47 46 45 44
53 48 45 42 52 47 44 42 46 43 41 45 42 40 43 41 40 39
49 44 40 37 48 43 40 37 42 39 36 41 38 36 40 37 35 34
46 40 36 33 45 39 35 33 38 35 32 37 34 32 36 34 32 31
42 36 32 29 42 36 32 29 35 31 29 34 31 29 33 31 28 27
40 33 29 26 39 33 29 26 32 29 26 31 28 26 31 28 26 25
37 31 26 24 36 30 26 24 30 26 24 29 26 23 28 25 23 22
35 28 24 22 34 28 24 21 27 24 21 27 24 21 26 23 21 20
33 26 22 20 32 26 22 20 25 22 20 25 22 19 24 21 19 19