METALUX
®
DESCRIPTION
Type
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
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 die-formed
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. Roto-lock
lampholders ensure positive
lamp retention. 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
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.
Hinging/Latching
Positive Cam latch with baked
white enamel finish. Safetylock T-hinges allow hinging
and latching either side.
2GC8
328T8
332
Controls
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.
3-1/4"
[83mm]
2' X 4' TROFFER
3 T8 LAMPS
Specification T8 Troffer
ENERGY DATA
Input Watts:
EB Ballast & STD Lamps
328T8 (67)
332 (91)
23-3/4" [603mm]
DOOR FRAMES
MOUNTING DATA
23-3/4"
[603mm]
Luminaire Efficacy Rating
LER = FL-83
Catalog Number: 2GC8-332A
GC8
F lat, White
Steel
Location of Standard
Access Opening
GC8FA
F lat, E xtruded
White Alum inum
GC8RA
D eep, R egressed,
E xtruded Natural Alum inum
1-1/2"
[38mm]
2-11/16"
[69mm]
*Reference the lamp/ballast data in the
Technical Section for specific lamp/ballast
requirements.
1"
[26mm]
1-1/2"
[38mm]
3-1/2" [89mm]
47-15/16" [1218mm]
LAMP CONFIGURATIONS
3-1/8"
[79mm]
**Consult Pre Sales Technical Support.
***Full sized ballast cover for biaxial lamps
and emergency option may apply.
3-1/4" [83mm]
X=5-3/8"
[137mm]
X
****When ordering Flange Kit for
installation in drywall ceilings, see options
and accessories compatibility section and
ordering logic.
X
23-3/4" [603mm]
CEILING COMPATIBILITY
G
Grid/Lay-in
Standard
Yearly Cost of 1000 lumens,
3000 hrs at .08 KWH = $2.89
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
(Verify compatibility/ consult
factory.)
COOPER LIGHTING
LAMPS CONTAIN MERCURY. DISPOSE ACCORDING TO
LOCAL, STATE OR FEDERAL LAWS
Safe and convenient means of
disconnecting power.
ADF031997
2GC8
PHOTOMETRICS
2GC8-332A
Electronic Ballast
(3) F32T8 lamps
3100 lumens
Spacing criterion:
(II) 1.2 x mounting
height, (⊥) 1.4 x
mounting height
Efficiency 85%
Test Report:
2GC8-332A.IES
LER = FL-83
Yearly Cost of 1000
lumens, 3000 hrs at
.08 KWH = $2.89
Angle
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Along II
2985
2987
2947
2881
2785
2659
2500
2309
2074
1797
1491
1194
935
711
520
370
263
141
11
45°
2985
2971
2946
2906
2840
2753
2628
2470
2253
1979
1683
1368
1023
692
441
296
227
139
26
Across
2985
2981
2971
2950
2907
2837
2737
2603
2424
2166
1839
1471
1109
800
576
433
319
184
37
Coefficients of Utilization
rc
rw
RCR
0
1
2
3
4
5
6
7
8
9
10
101
89
78
69
62
55
50
45
42
38
35
101 101
86 83
73 68
63 57
55 49
48 43
43 37
38 33
34 30
31 27
29 24
99
91
83
76
70
64
59
55
51
48
45
99 99
87 84
77 72
68 62
61 54
55 48
49 42
45 38
41 34
38 31
35 28
99
81
67
57
49
42
37
33
30
27
24
20%
50%
50 30 10
30%
50 30 10
10%
50 30 10
0%
0
94
84
74
66
59
53
48
44
40
37
34
90
80
71
63
57
51
46
42
39
36
33
87
77
69
61
55
50
45
41
38
35
32
85
72
61
52
45
39
35
31
27
25
22
94
81
70
60
53
47
42
37
34
31
28
94
79
66
56
48
42
37
33
29
27
24
90
78
68
59
52
46
41
37
33
30
28
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
2371
3907
6627
7909
7909
%Lamp
25.5
42.0
71.3
85.0
85.0
Candela
Angle
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Along II
3509
3509
3454
3362
3241
3086
2908
2683
2321
1704
1126
734
408
271
212
196
150
77
5
45°
3509
3490
3451
3388
3301
3189
3045
2848
2496
1907
1373
1028
697
448
284
146
79
73
17
Across 0
3509
3501
3474
3433
3379
3306
3223
3105
2839
2163
1281
742
422
235
170
159
132
81
16
Coefficients of Utilization
Effective floor cavity reflectance
80%
70%
70 50 30 10
70 50 30 10
101
93
85
78
72
66
61
57
53
49
46
2GC8-332A156
Electronic Ballast
(3) F32T8 lamps
3100 lumens
Spacing criterion:
(II) 1.2 x mounting
height, (⊥) 1.4 x
mounting height
Efficiency 82.5%
Test Report:
2GC8332A19_156.IES
LER = FL-80
Yearly Cost of 1000
lumens, 3000 hrs at
.08 KWH = $3.00
Candela
%Fixture
30.0
49.4
83.8
99.9
100.0
Average
0-Deg
cd/sm
4706
3339
2698
2293
2595
90
76
64
55
48
41
37
33
29
26
24
Average
45-Deg
cd/sm
4489
3826
2626
1834
2558
87
76
66
57
50
45
40
36
33
30
27
87
74
63
54
47
41
36
32
29
26
24
Average
90-Deg
cd/sm
4913
4114
3036
2683
3386
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
98
91
84
78
72
67
62
58
54
51
48
98
88
79
70
63
57
52
48
44
40
37
98
85
74
65
57
51
46
41
37
34
31
98
82
70
60
52
46
41
36
33
30
27
96
89
82
76
70
65
61
57
53
50
47
96
86
77
69
62
57
51
47
43
40
37
96
83
73
64
56
50
45
41
37
34
31
20%
96
81
69
59
52
46
41
36
33
30
27
50%
50 30 10
30%
50 30 10
50
92
83
74
67
60
55
50
46
42
39
36
88
79
72
65
59
53
49
45
41
38
35
84
77
69
63
57
52
47
44
40
37
35
92
80
70
62
55
49
44
40
37
33
31
92
78
67
58
51
45
40
36
33
30
27
88
78
68
61
54
48
44
40
36
33
30
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
2762
4546
6894
7671
7671
%Lamp
29.7
48.9
74.1
82.5
82.5
%Fixture
36.0
59.3
89.9
100.0
100.0
Average
0-Deg
cd/sm
3865
2053
1029
1215
1417
88
76
66
57
50
45
40
36
32
29
27
10%
30 10
Average
45-Deg
cd/sm
4326
2875
1700
905
1343
84
75
67
59
53
48
43
39
36
33
30
84
74
64
56
50
44
40
36
32
29
27
0%
0
82
72
63
55
48
43
38
34
31
28
25
Average
90-Deg
cd/sm
4906
2075
892
985
1491
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
ADF031997
2GC8
ORDERING INFORMATION
SAMPLE NUMBER: 2GC8-332A-UNV0V-EB81-U
Rating (5)
Blank=
Standard
ATW-SW4=
Chicago
Rated
Width
2=2' Width
Trim Type
G=Grid/Lay-in (Standard) (1)
G=Concealed T
G=Slot Grid
F=Flange Trim
Series
C8=Specification T8 Troffer
Door Frame
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 (Length)
28T8=28W T8 (48")
32=32W T8 (48")
A=#12 Pattern Acrylic
A125=#12 Pattern Acrylic
(.125" Thick)
A19/156=#19 Pattern
Acrylic (.156" Thick)
PB1S=Silver Parabolic
Louver (1/2" x 1/2" x 1/2")
Option – Aluminum Flange Trim (6)
Blank=SW (Single White)
Type
Color
‘S’ Single
‘N’ Natural
‘R’ In Row
‘W’ White
‘E’ End of Row
Voltage (3)
120V=120 Volt
277V=277 Volt
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
Options
FR=Fire Rated Label
REP=Riveted End Plates
PAF=Painted After
Fabrication
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
Packaging
U=Unit Pack
PAL=Job Pack, out of carton
PALC=Job Pack, in carton
Fifth Light DALI Ballasts (7)
5LT8 =T8 DALI Program Rapid Start. Total
Harmonic Distortion < 10%. Ballast
Factor 1.0
(2)
NOTES: An EQ Grid Clip is recommended for all 9/16" ceiling systems. Standard off-center ballast compartment on
(3)
(4)
3-lamp fixtures. Products also available in non-US voltages and frequencies for international markets. Not available
(5)
when specifying emergencies, voltage must be specific. For NYC rated product, see separate specification sheets.
(6)
(7)
Specify row configuration, type in catalog number when ordering complete fixture. For a complete listing of Fifthlight
Technology products and other solutions from Cooper Controls, visit www.coopercontrol.com.
Number of Ballasts
1=1 Ballast
2=2 Ballasts
3=3 Ballasts
Specifications & dimensions subject to change without notice. Consult your Cooper Lighting Representative for
availability and ordering information.
ACCESSORIES
EQ-CLIP-U=T-BAR Safety Earthquake Clips (1)
FCTKA-24W-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.
2GC8-328T8A
2GC8-332A
Wt.
20 lbs.
20 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
ADF031997