METALUX
®
DESCRIPTION
GC8 is a premium grade specification lensed troffer series. This
innovative, high quality luminaire is dedicated to the latest T8 lamp and
micro electronic ballast technology for optimal performance and energy
efficiency. The GC8 is compatible with all of today’s popular ceiling
systems and is available with a number of options and accessories for
application versatility.
Catalog #
The GC8 series features efficiency, quality and performance. The series
is an excellent choice for commercial office spaces, schools, hospitals
or retail merchandising areas.
Prepared by
Type
Project
Date
Comments
SPECIFICATION FEATURES
Construction
Electrical
Frame/Shielding
Rigid housing is die formed of
code gauge prime cold rolled
steel and features full length dieformed stiffeners and unibody
endplate for added strength.
Side flanges are hemmed.
Innovative design provides
superior lens brightness
uniformity and visual comfort.
Micro ballast cover*** reduces
ballst shadow for superior lens
brightness uniformity and is
easily removed without tools.
Die formed captive lampholder
brackets fully enclose
lampholder wiring permitting
easy lampholder replacement.
Unibody endplates are securely
attached with interlocking tabs
and screws. Four auxiliary
fixture end suspension points
provided. Ample KOs are
provided for continuous row
wiring. Endplates have integral
Grid-lock feature for safety and
convenience.
Ballasts are CBM/ETL Class “P”
and are positively secured by
mounting bolts. Rotor-lock T8
lampholders. Biaxial models use
2G11 base lampholders with
double-edge wiping action
pressure-lock contacts and
horizontally oriented lamp
support clips. UL/CUL listed.
Suitable for damp locations.**
Die formed, heavy gauge, flat
steel door with reinforced
mitered corners and baked
white enamel finish. Flat and
regressed aluminum doors also
available. Positive light seals.
Light stabilized, acrylic
prismatic lens. Standard #12
pattern. Numerous additional
shielding options available.
Finish
Controls
Multistage, iron phosphate
pretreatment ensures maximum
bonding and rust inhibition.
Housing and ballast cover
finished with new 90% reflective
white enamel for superior
performance. “PAF” Painted
After Fabrication option also
available.
Fifth Light ballast options are
offered for both 0-10V
continuous dimming and DALI
applications. Combine with
energy-saving products like
occupancy sensors, daylighting
controls, and lighting relay
panels from Cooper Controls
(www.coopercontrol.com) to
maximize energy savings.
Hinging/Latching
2GC8
317
3BX40
3U1-5/8
2' X 2' TROFFER
3 LAMPS
Specification T8 Troffer
Positive Cam latch with baked
white enamel finish. Safety-lock
T-hinges allow hinging and
latching either side.
ENERGY DATA
3-1/4"
[83mm]
Input Watts:
EB Ballast & STD Lamps
317 (56), 3BX40 (98), 3U1-5/8 (88)
ES Ballast & STD Lamps
317 (68), 3BX40 (125), 3U1-5/8 (105)
23-3/4" [603mm]
LAMP CONFIGURATIONS
MOUNTING DATA
3U1-5/8
317
1"
[26mm]
23-3/4"
[603mm]
Luminaire Efficacy Rating
LER = FL-63
Catalog Number: 2GC8-317
2-11/16"
[69mm]
1-1/2"
[38mm]
X=5-3/8"
[137mm]
Yearly Cost of 1000 lumens,
3000 hrs at .08 KWH = $3.81
3-1/4" [83mm]
3-1/4" [83mm]
X
X=1-5/8"
[41mm]
X
23-3/4" [603mm]
X
X
X
5-3/8"
5-3/8"
[137mm] [137mm]
23-3/4" [603mm]
DOOR FRAMES
GC8
F lat, White
Steel
2-3/4" [70mm]
5-3/4" [146mm]
GC8FA
F lat, E xtruded
White Alum inum
*Reference the lamp/ballast data in the
Technical Section for specific lamp/ballast
requirements.
**Consult Pre Sales Technical Support.
GC8RA
D eep, R egressed,
E xtruded Natural Alum inum
23-15/16" [610mm]
***Full sized ballast cover for biaxial lamps
and emergency option may apply.
****When ordering Flange Kit for
installation in drywall ceilings, see options
and accessories compatibility section and
ordering logic.
CEILING COMPATIBILITY
G
Grid/Lay-in
Standard
G
Concealed T
G
Slot Grid
F
Flange Trim
With Supporting
Swing Gates
Ceiling
Type
Trim
Type
Exposed Grid
Concealed T
Slot Grid
Flange
G
G
G
F
LAMPS CONTAIN MERCURY. DISPOSE ACCORDING TO
LOCAL, STATE OR FEDERAL LAWS
Safe and convenient means of
disconnecting power.
(Verify compatibility/ consult
factory.)
COOPER LIGHTING
ADF041298
2GC8
PHOTOMETRICS
2GC8-317A
Electronic Ballast
(3) F17/SPX35
T8 lamps
1300 lumens
Spacing criterion:
(II) 1.2 x mounting
height, (⊥) 1.3 x
mounting height
Efficiency 75.5%
Test Report:
2GC8317A.IES
LER = FL-63
Yearly Cost of 1000
lumens, 3000 hrs at
.08 KWH = $3.81
Angle
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Along II
1213
1210
1191
1161
1120
1064
994
905
804
683
553
435
335
250
186
143
107
56
0
Across ⊥
1213
1215
1211
1202
1184
1156
1106
1040
960
851
708
559
404
284
213
171
125
63
0
45°
1213
1209
1198
1180
1151
1111
1056
980
884
760
620
486
347
229
154
121
102
60
0
Coefficients of Utilization
rc
rw
RCR
0
1
2
3
4
5
6
7
8
9
10
Effective floor cavity reflectance
80%
70%
70 50 30 10
70 50 30 10
90
83
76
70
64
59
55
51
47
44
42
90
79
70
62
55
50
45
41
38
35
32
90
76
65
56
49
43
39
35
31
29
26
90
74
61
52
44
39
34
30
27
24
22
88
81
74
68
62
58
53
50
46
43
41
88
78
69
61
54
49
44
40
37
34
32
88 88
75 72
64 60
56 51
49 44
43 38
38 34
34 30
31 27
28 24
26 22
20%
50%
50 30 10
30%
50 30 10
50
84
74
66
59
53
47
43
39
36
33
31
80
72
64
57
51
46
42
38
35
32
30
77
69
61
55
49
45
41
37
34
32
29
84
72
62
54
48
42
38
34
31
28
26
84
70
59
50
43
38
34
30
27
24
22
80 80
70 68
60 58
53 49
46 43
41 38
37 33
33 30
30 27
28 24
25 22
Luminance Data
Zone
0-30
0-40
0-60
0-90
0-180
Angle
in Deg
45
55
65
75
85
%Lamp
23.7
38.7
64.1
75.5
75.5
%Fixture
31.4
51.3
84.8
100.0
100.0
90
Across ⊥
1344
1344
1336
1320
1297
1270
1241
1199
1115
861
489
282
164
94
69
67
54
31
0
45°
1344
1339
1324
1298
1263
1219
1163
1094
982
748
511
393
268
168
95
59
34
26
0
0
Coefficients of Utilization
Zonal Lumen Summary
Lumens
960
1569
2594
3059
3059
Candela
2GC8-317A156
Electronic Ballast
Angle
Along II
(3) F17/SPX35
0
1344
T8 lamps
5
1340
1300 lumens
10
1319
15
1283
Spacing criterion:
20
1234
(II) 1.2 x mounting
25
1172
height, (⊥) 1.4 x
30
1102
mounting height
35
1015
40
905
Efficiency 72.6%
45
700
Test Report:
50
435
55
267
2GC8317A19_156.IES
60
158
LER = FL-60
65
91
70
65
Yearly Cost of 1000
75
63
lumens, 3000 hrs at
80
52
.08 KWH = $4.00
85
29
Candela
Average
0-Deg
cd/sm
3394
2665
2078
1941
2258
10%
30 10
Average
45-Deg
cd/sm
3776
2977
1904
1643
2419
77
67
59
51
45
41
36
33
30
27
25
77
66
56
49
42
37
33
29
27
24
22
0%
0
76
64
55
47
41
36
31
28
25
23
21
Average
90-Deg
cd/sm
4228
3424
2361
2321
2540
rc
rw
RCR
0
1
2
3
4
5
6
7
8
9
10
Effective floor cavity reflectance
80%
70%
70 50 30 10
70 50 30 10
86
80
74
69
64
59
55
51
48
45
42
86
77
69
62
56
51
46
42
39
36
33
86
75
65
57
50
45
40
36
33
30
28
86
72
61
53
46
40
36
32
29
26
24
84
78
72
67
62
57
53
50
47
44
41
84
76
68
61
55
50
45
41
38
35
33
84
73
64
56
50
44
40
36
33
30
27
84
71
61
52
46
40
36
32
29
26
24
20%
50%
50 30 10
30%
50 30 10
50
81
73
65
59
53
48
44
40
37
34
32
77
70
63
57
52
47
43
39
36
34
31
74
67
61
55
50
46
42
38
36
33
31
81
71
62
55
49
44
39
35
32
30
27
81
69
59
51
45
40
36
32
29
26
24
77
68
60
53
48
43
39
35
32
29
27
Zonal Lumen Summary
Luminance Data
Zone
0-30
0-40
0-60
0-90
0-180
Angle
in Deg
45
55
65
75
85
Lumens
1058
1743
2649
2940
2940
%Lamp
26.1
43.0
65.4
72.6
72.6
%Fixture
36.0
59.3
90.1
100.0
100.0
Average
0-Deg
cd/sm
3478
1636
757
855
1169
77
67
58
51
45
39
35
32
29
26
24
10%
30 10
74
66
59
52
47
42
38
34
31
29
27
Average
45-Deg
cd/sm
3717
2407
1397
801
1048
74
65
57
50
44
39
35
31
28
26
24
0%
0
73
64
55
48
43
38
34
30
27
25
22
Average
90-Deg
cd/sm
4278
1727
781
910
1250
Visit our web site at www.cooperlighting.com
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX 770.486.4801
2/24/16
ADF041298
2GC8
ORDERING INFORMATION
SAMPLE NUMBER: 2GC8-317A-UNV-EB81-U
Rating (6)
Blank=
Standard
ATW-SW4=
Chicago
Rated
Width
2=2' Width
Trim Type
G=Grid/Lay-in (1)
(Standard)
G=Concealed T
G=Slot Grid
F=Flange Trim
Series
C8=Specification T8 Troffer
Standard=Flat White Steel Door
(Leave Blank)
FA=Flush White Extruded Aluminum
c/w Spring Latch
RA=Regressed White Extruded
Aluminum
FAN=Flush Natural Anodized
Extruded Aluminum
RAN=Regressed Natural Anodized
Extruded Aluminum
FAB=Flush Black Extruded Aluminum
RAB=Regressed Black Extruded
Aluminum
(1)
Number of
Lamps (2)
3 Lamps
(Not included)
Wattage
17=17W T8 (24")
U1-5/8=31W T8 (24")(10)
BX40=40W Biax (24")
Shielding
A=#12 Acrylic Pattern
A125=#12 Pattern Acrylic (.125"
Thickness)
A19/156=#19 Pattern Acrylic
(.156" Thickness)
PB1S=1/2" x 1/2" x 1/2" Silver
Parabolic Louver (Styrene)
Option – Aluminum Flange Trim (7)
Blank=SW (Single White)
Type
Color
‘S’ Single
‘N’ Natural
‘R’ In Row
‘W’ White
‘E’ End of Row
Voltage (3)
347V=347 Volt
UNV=Universal Voltage 120-277 (4)
Options
GL=Single Element Fuse
GM=Double Element Fuse
Lamps=Lamps Installed
Flex=Flex Installed
EL=Emergency Installed
(2)
NOTES: An EQ Grid Clip is recommended for all 9/16" ceiling systems. Standard off-center ballast compartment
(3)
(4)
on 3-lamp fixtures. Products also available in non-US voltages and frequencies for international markets. Not
(5)
(6)
available when specifying emergencies, voltage must be specific. Consult Pre Sales Technical Support. For NYC
(7)
rated product, see separate specification sheets. Specify row configuration, type in catalog number when ordering
(8)
(9)
complete fixture. Not available in UNV voltages. Must specify voltage. For a complete listing of Fifthlight
(10)
Technology products and other solutions from Cooper Controls, visit www.coopercontrol.com.
Fifthlight ballast option
not available.
Specifications & dimensions subject to change without notice. Consult your Cooper Lighting Representative for
availability and ordering information.
Ballast Type
EB8 =T8 Electronic Start.
Total Harmonic Distortion < 10%
EB8 /PLUS= T8 Electronic Start.
Total Harmonic Distortion < 10%.
High Ballast Factor > 1.15.
ER8 = T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%
High Performance T8 Ballasts
HB8 =T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
Standard Ballast Factor .86 – .88
HB8 L=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
Low Ballast Factor .77 – .82
HB8 N=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
Normal Ballast Factor 1.0
HB8 H=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
High Ballast Factor 1.15 – 1.20
HR8 T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
Standard Ballast Factor .86 – .88
HR8 DIM=T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
Step Dimming. Ballast Factor .88
HR8 L=T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
Low Ballast Factor .71 – .79
HR8 H=T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
High Ballast Factor 1.15 – 1.20
Options
LAO=Less Access
Opening(5)
FR=Fire Rated Label
REP=Riveted End Plates
PAF=Painted After
Fabrication
Packaging
U=Unit Pack
PAL=Job Pack, out of carton
PALC=Job Pack, in carton
Fifth Light DALI Ballasts (9)
5LT8 =T8 DALI Program Rapid Start.
Total Harmonic Distortion < 10%.
Ballast Factor 1.0
Number of Ballasts
1=1 Ballast
2=2 Ballasts
3=3 Ballasts
ACCESSORIES
EQ-CLIP-U=T-BAR Safety Earthquake Clips (1)
FCTKA-22W-U=Field Installed Flange Kit
FCTK
A – 24
R W – U
Trim Kit
Field
Convertible
22=2' x 2'
24=2' x 4'
N=Natural
W=White
Blank=Single
R=In Row
E=End Row
U=Unit Pack
Aluminum
SHIPPING INFORMATION
Catalog No.
Wt.
2GC8-3U1-5/8A
2GC8-317A
12 lbs.
12 lbs.
Visit our web site at www.cooperlighting.com
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX 770.486.4801
2/24/16
ADF041298