Specification Sheet

P87-AT WITH P8068-28
Report No. 98102
No. Lamps: 1 Type Lamp: 65BR30 FL Total Lumens: 770
Fixture Efficiency: 91.0%
S/MH Ratio: 0.9
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 0.3 29 2.6 1.3 12
14 0.4 25 3.6 1.8 10
12 0.5 21 5.3 2.6 9
10 0.8 16 8.4 4.2 7
8 1.6 12 15.7 7.8 5
Beam Angle - 95 Beam Angle - 49
Quick Calculator Charts
0 100 200 300 400 500
0
6
12
18
24
30
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
6
12
18
24
30
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
474
464
437
398
354
311
274
241
209
173
132
84
46
26
17
11
5
1
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
108 108 108 108 106 106 106 106 101 101 101 97 97 97 93 93 93 91
101 98 95 93 99 96 93 91 92 90 88 89 87 86 86 84 83 81
94 89 84 80 92 87 82 79 84 80 77 81 78 75 78 76 74 72
88 80 74 69 86 79 73 69 76 72 68 74 70 67 72 68 66 64
82 73 66 61 80 72 65 61 69 64 60 67 63 59 66 62 59 57
76 66 59 54 74 65 59 54 64 58 54 62 57 53 60 56 53 51
71 61 54 49 69 60 53 49 58 53 48 57 52 48 56 51 48 46
66 56 49 44 65 55 49 44 54 48 44 53 47 43 51 47 43 42
62 52 45 40 61 51 45 40 50 44 40 49 44 40 48 43 39 38
59 48 41 37 57 47 41 37 46 41 37 45 40 36 45 40 36 35
55 45 38 34 54 44 38 34 43 38 34 42 37 34 42 37 33 32