Specifications

P87-AT WITH P8009-60
Report No. 98184
No. Lamps: 1 Type Lamp: 50PAR30L/FL-GE Total Lumens: 610
Fixture Efficiency: 82.4%
S/MH Ratio: 0.8
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 0.2 28 1.7 0.9 11
14 0.2 24 2.4 1.2 9
12 0.4 20 3.5 1.8 8
10 0.6 16 5.6 2.8 6
8 1.0 11 10.4 5.2 4
Beam Angle - 93 Beam Angle - 44
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
316
307
284
250
213
180
153
131
113
99
86
74
63
52
41
30
20
11
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
98 98 98 98 96 96 96 96 92 92 92 88 88 88 84 84 84 83
90 86 83 80 88 84 81 79 81 78 76 78 76 74 75 73 72 70
83 76 71 66 80 75 70 65 72 68 64 69 66 62 66 64 61 59
76 68 61 56 74 66 60 56 64 59 55 62 57 54 60 56 53 51
70 61 54 49 68 60 53 48 58 52 48 56 51 47 54 50 46 45
65 55 48 43 63 54 47 42 52 46 42 51 46 42 49 45 41 39
60 50 43 38 59 49 43 38 48 42 38 46 41 37 45 41 37 35
56 46 39 34 55 45 39 34 44 38 34 43 38 34 42 37 33 32
53 42 36 31 52 42 35 31 41 35 31 40 34 31 39 34 30 29
50 39 33 28 49 39 33 28 38 32 28 37 32 28 36 31 28 27
47 37 30 26 46 36 30 26 35 30 26 35 30 26 34 29 26 24