Specifications

P83 WITH P8072-10
Report No. 98032
No. Lamps: 1 Type Lamp: 13W QUAD CF - GE Total Lumens: 860
Fixture Efficiency: 52.1%
S/MH Ratio: 1.7
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 0.7 0.3 25
14 0.1 35 0.9 0.5 21
12 0.1 29 1.3 0.7 17
10 0.2 23 2.2 1.1 14
8 0.4 17 4.0 2.0 10
Beam Angle - 114 Beam Angle - 84
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
122
125
132
141
151
160
167
166
156
139
115
87
58
32
11
1
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
62 62 62 62 60 60 60 60 58 58 58 55 55 55 53 53 53 52
58 56 54 52 56 54 53 51 52 51 50 50 49 48 48 48 47 46
53 49 46 44 52 48 46 43 47 44 42 45 43 41 43 42 40 39
49 44 40 37 48 43 40 37 42 39 36 40 38 36 39 37 35 34
45 39 35 32 44 38 34 31 37 34 31 36 33 31 35 32 30 29
41 35 31 27 40 34 30 27 33 30 27 32 29 27 31 29 26 25
38 31 27 24 37 31 27 24 30 26 24 29 26 23 28 25 23 22
35 28 24 21 34 28 24 21 27 23 21 26 23 21 26 23 20 19
33 26 21 19 32 25 21 18 25 21 18 24 21 18 23 20 18 17
30 24 19 17 30 23 19 16 23 19 16 22 19 16 22 18 16 15
28 22 18 15 28 21 17 15 21 17 15 20 17 15 20 17 15 14