Specification Sheet

P66-EBFB WITH P8031-31FB
Report No. 98179
No. Lamps: 2 Type Lamp: 26W CF QUAD-GE Total Lumens: 3400
Fixture Efficiency: 25.2%
S/MH Ratio: 0.9 (0˚) 1.0 (90˚)
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 0.4 26 3.6 1.8 13
14 0.5 22 5.0 2.5 11
12 0.7 18 7.3 3.6 9
10 1.2 14 11.6 5.8 7
8 2.2 10 21.7 10.8 5
Beam Angle - 87˚ Beam Angle - 51˚
Quick Calculator Charts
0 100 200 300 400 500
0
6
12
18
24
30
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
8
16
24
32
40
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
655 655
616 649
584 646
546 609
469 566
390 517
321 432
241 356
163 284
100 203
55 125
34 80
27 49
14 24
2 6
1 1
1 1
0 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
30 30 30 30 29 29 29 29 28 28 28 27 27 27 26 26 26 25
28 27 27 26 28 27 26 26 26 25 25 25 25 24 24 24 23 23
27 25 24 23 26 25 24 23 24 23 22 23 22 22 22 22 21 21
25 23 22 20 24 23 21 20 22 21 20 21 20 20 21 20 19 19
23 21 20 18 23 21 19 18 20 19 18 20 19 18 19 18 18 17
22 19 18 17 21 19 18 16 19 17 16 18 17 16 18 17 16 16
21 18 16 15 20 18 16 15 17 16 15 17 16 15 17 16 15 14
19 17 15 14 19 16 15 14 16 15 14 16 14 13 16 14 13 13
18 15 14 13 18 15 14 13 15 14 12 15 13 12 15 13 12 12
17 14 13 12 17 14 13 12 14 13 12 14 12 11 14 12 11 11
16 14 12 11 16 13 12 11 13 12 11 13 12 11 13 12 11 10
P66-EBFB