Specification Sheet

P87-AT WITH P8068-28
Report No. 98103
No. Lamps: 1 Type Lamp: 150PAR38 Total Lumens: 2200
Fixture Efficiency: 71.3%
S/MH Ratio: 0.5
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 2.0 13 19.7 9.8 7
14 2.7 11 27.1 13.6 6
12 4.0 9 39.8 19.9 5
10 6.4 7 63.8 31.9 4
8 11.9 5 118.6 59.3 3
Beam Angle - 52 Beam Angle - 30
Quick Calculator Charts
0 100 200 300 400 500
0
12
24
36
48
60
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
16
32
48
64
80
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
3588
3561
3096
2033
1002
545
363
277
235
192
142
83
37
16
10
7
4
2
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
85 85 85 85 83 83 83 83 79 79 79 76 76 76 73 73 73 71
81 79 77 76 79 77 76 75 75 73 72 72 71 70 70 69 68 67
77 74 71 69 76 72 70 68 70 68 66 68 66 65 66 65 64 62
73 69 66 63 72 68 65 62 66 64 61 64 62 60 63 61 59 58
70 65 61 58 69 64 61 58 63 60 57 61 59 56 60 58 56 55
67 61 57 54 66 61 57 54 59 56 54 58 55 53 57 55 53 52
64 58 54 51 63 57 54 51 56 53 51 55 52 50 54 52 50 49
61 55 51 48 60 55 51 48 54 50 48 53 50 48 52 49 47 46
59 52 48 46 58 52 48 46 51 48 45 51 48 45 50 47 45 44
56 50 46 44 56 50 46 44 49 46 43 49 45 43 48 45 43 42
54 48 44 42 54 48 44 42 47 44 42 47 44 41 46 43 41 40