(P8043-21) Specification Sheet

P830-TG WITH P8043-22
Report No. 98240
No. Lamps: 1 Type Lamp: 50R20-GE Total Lumens: 410
Fixture Efficiency: 84.9%
S/MH Ratio: 0.7
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 0.3 19 3.0 1.5 9
14 0.4 16 4.1 2.1 8
12 0.6 13 6.0 3.0 6
10 1.0 10 9.7 4.8 5
8 1.8 8 18.0 9.0 4
Beam Angle - 70 Beam Angle - 38
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
543
522
488
404
296
203
138
97
64
30
11
6
4
2
1
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
101 101 101 101 98 98 98 98 94 94 94 90 90 90 86 86 86 85
96 94 92 90 94 92 90 89 89 87 86 86 84 83 83 82 81 79
92 88 84 81 90 86 83 81 83 81 79 81 79 77 79 77 75 74
87 82 78 75 85 81 77 74 79 75 73 76 74 72 75 72 71 69
83 77 72 69 81 76 72 68 74 70 68 72 69 67 71 68 66 65
79 72 67 64 78 71 67 64 70 66 63 68 65 62 67 64 62 61
75 68 63 60 74 67 63 59 66 62 59 65 61 59 64 61 58 57
72 64 59 56 71 64 59 56 63 58 55 62 58 55 61 57 55 54
69 61 56 53 68 60 56 53 59 55 52 59 55 52 58 54 52 51
66 58 53 50 65 57 53 50 57 52 49 56 52 49 55 52 49 48
63 55 50 47 62 55 50 47 54 50 47 53 49 47 53 49 47 46