Specifications

P83 WITH P8072-28
Report No. 98033
No. Lamps: 1 Type Lamp: 13W QUAD CF-GE Total Lumens: 860
Fixture Efficiency: 53.2%
S/MH Ratio: 1.8
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 0.1 46 0.6 0.3 24
14 0.1 39 0.8 0.4 21
12 0.1 32 1.2 0.6 17
10 0.2 25 1.9 1.0 14
8 0.4 19 3.6 1.8 10
Beam Angle - 119 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
109
111
114
119
125
133
139
140
137
128
115
99
79
57
36
18
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
64 64 64 64 62 62 62 62 59 59 59 57 57 57 54 54 54 53
58 56 54 52 57 55 53 51 53 51 50 51 49 48 49 48 47 46
53 49 45 42 52 48 45 42 46 43 41 44 42 40 43 41 39 38
48 43 38 35 47 42 38 35 40 37 34 39 36 33 38 35 33 32
44 38 33 29 43 37 33 29 36 32 29 34 31 28 33 30 28 27
40 33 29 25 39 33 28 25 32 28 25 31 27 24 30 27 24 23
37 30 25 22 36 29 25 21 28 24 21 27 24 21 27 23 21 20
34 27 22 19 33 26 22 19 26 22 19 25 21 18 24 21 18 17
32 24 20 17 31 24 20 16 23 19 16 23 19 16 22 19 16 15
29 22 18 15 29 22 18 15 21 17 15 21 17 14 20 17 14 13
28 20 16 13 27 20 16 13 19 16 13 19 15 13 19 15 13 12