(P8043-21) Specification Sheet

P830-TG WITH P8043-21
Report No. 98237
No. Lamps: 1 Type Lamp: 50R20-GE Total Lumens: 410
Fixture Efficiency: 85.5%
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 2.9 1.5 10
14 0.4 16 4.0 2.0 8
12 0.6 13 5.9 3.0 7
10 0.9 10 9.5 4.7 5
8 1.8 8 17.6 8.8 4
Beam Angle - 70 Beam Angle - 39
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
534
525
492
429
303
195
135
97
64
32
9
6
4
2
1
1
1
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
102 102 102 102 100 100 100 100 95 95 95 91 91 91 87 87 87 86
97 95 93 91 95 93 91 89 90 88 87 86 85 84 83 83 82 80
93 88 85 82 91 87 84 81 84 82 80 82 80 78 79 78 76 75
88 83 79 75 86 82 78 75 79 76 73 77 75 72 75 73 71 70
84 78 73 70 82 77 72 69 75 71 68 73 70 67 72 69 67 65
80 73 68 65 79 72 68 64 71 67 64 69 66 63 68 65 63 61
76 69 64 60 75 68 63 60 67 63 60 66 62 59 65 61 59 58
73 65 60 57 72 64 60 56 63 59 56 62 59 56 61 58 56 54
69 62 57 53 68 61 56 53 60 56 53 59 56 53 58 55 53 51
66 58 54 50 65 58 53 50 57 53 50 56 53 50 56 52 50 49
64 56 51 48 63 55 51 48 55 50 47 54 50 47 53 50 47 46