Specification Sheet

P68-EBFB WITH P8031-28FB
Report No. 98214
No. Lamps: 2 Type Lamp: 18W CF QUAD-GE Total Lumens: 2500
Fixture Efficiency: 38.7%
S/MH Ratio: 1.0 (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 0.3 27 3.5 1.7 13
14 0.5 23 4.8 2.4 11
12 0.7 19 7.1 3.5 9
10 1.1 15 11.3 5.7 7
8 2.1 11 21.1 10.5 5
Beam Angle - 90˚ Beam Angle - 53˚
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
637 637
627 632
610 617
573 586
518 539
454 473
380 406
303 343
226 273
158 200
108 144
83 111
71 83
51 59
33 39
21 25
11 15
3 6
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
46 46 46 46 45 45 45 45 43 43 43 41 41 41 40 40 40 39
43 42 40 39 42 41 40 39 39 38 37 38 37 36 36 36 35 34
40 37 35 34 39 37 35 33 35 34 32 34 33 32 33 32 31 30
37 34 31 29 36 33 31 29 32 30 28 31 29 28 30 29 28 27
35 31 28 26 34 30 28 26 29 27 25 29 27 25 28 26 25 24
32 28 25 23 32 28 25 23 27 25 23 26 24 22 26 24 22 22
30 26 23 21 30 25 23 21 25 22 20 24 22 20 24 22 20 19
28 24 21 19 28 23 21 19 23 20 19 22 20 19 22 20 18 18
27 22 19 17 26 22 19 17 21 19 17 21 19 17 20 18 17 16
25 20 18 16 25 20 18 16 20 17 16 19 17 16 19 17 16 15
24 19 16 15 23 19 16 15 19 16 15 18 16 14 18 16 14 14
P68-EBFB