Page 1
Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
HID Downlights
8” LGH
Round Lens
Wet Location
Vertical Metal Halide Lamp
FEAT URES ORDERING INFORMATION NOTES
OPTICAL SYSTEM
• Aluminum upper reflector coated with highly reflective white paint provides high
efficiency and an evenly illuminated aperture appearance.
• Available with tempered prismatic lens (T73), flat Fresnel lens (FFL) or flat opal
lens (FOL).
• Regressed white door (RW) or stepped black baffle (SB) are available with white
painted flange provided.
• Door is retained by self-aligning, torsion support springs, preventing gaps
between door and ceiling.
MECHANICAL SYSTEM
• 16-gauge galvanized steel mounting/plaster frame with integral brackets to
retain optical system. Maximum 1-1/2” ceiling thickness.
• 16-gauge galvanized steel mounting bars with continuous 4” vertical adjustment are shipped pre-installed. Post installation adjustment possible without
the use of tools from above or below ceiling.
• Galvanized steel junction box with hinged access covers and spring latch. Two
combination 1/2”-3/4” and four 1/2” knockouts for straight-through conduit
runs. Capacity: 8 (4 in, 4 out) No. 12 AWG conductors rated for 90°C.
EXAMPLE: LGH 150M 8RW T73 120 HEB
Series Wattage/Lamp
LGH
Metal halide
50M
70M 70W ED17
100M 100W ED17
1
50W ED17
Door frame Lens type Voltage Options
8RW Regressed white
door
8SB Stepped black
baffle
T73 Tempered
prismatic lens
FFL Flat fresnel lens
FOL Flat opal lens
150M2 150W ED17
Color-corrected metal halide
50MHC
50W ED17
70MHC 70W ED17
100MHC 100W ED17
150MHC2150W ED17
ELECTRICAL SYSTEM
• Die-cast aluminum lampholder housing.
• Medium-base porcelain socket with nickel-plated screw shell.
• Prewired encased-and-potted, 120/277 (pulse-start) or 120/347 (probe-start)
ballast tray module. Module can be attached before or after mounting of
mounting/plaster frame.
• Metal halide: 150W is standard with electronic ballast.
• Thermally-activated insulation detector.
LISTING
• Fixtures are UL Listed for thru-branch wiring, non-IC recessed mounting and wet
locations. Listed and labeled to comply with Canadian standards.
WARRANTY
• 1-year limited warranty. Complete warranty terms located at
www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx
120
277
347
CP Chicago plenum
3
TRDA
RRL
QRS
QRSTD
EC
Tamper resistant door assembly
4
RELOC®-ready luminaire. Provides compatibility with Lithonia
RELOC system. Access above ceiling required.
5
Quartz Restrike System
6
Quartz Restrike System with time delay
7
Emergency circuit
SF Single fuse
GSKT Foam gasketing, ships uninstalled
8
HEB
Electronic ballast
WLP Lamp (shipped separately)
ACCESSORIES order as separate catalog numbers (shipped separately)
SCA8
Sloped ceiling adapter. Degree of slope must be specified (10D, 15D, 20D, 25D, 30D). Ex: SCA8 10D.
ORDERING NOTES
1. Recommended for use with coated lamps.
2. California Title 20 compliant. Only available with HEB ballast.
3. Uses Torx T20 rejection pin drive system. You may order RK1 T20DRV U Torx driver accessory.
4. For compatible RELOC systems, refer to TECH-110.
LGH-8-ROUND-LENS
PAGE 1 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 10/02/13. Specifications subject to change without notice.
5. Not available with QRSTD or EC.
6. Not available with QRS or EC.
7. Not available with QRS or QRSTD.
8. 120 or 277V only.
Page 2
8” LGH
Round Lens
Wet Location, Vertical Metal Halide Lamp
DIMENSIONAL DATA
All dimensions are inches (centimeters) unless otherwise noted.
10
(25.4)
17-3/4
(45.1)
Aperture: 7-7/8 (20.1)
Ceiling Opening: 8-7/8 (22.5)
Overlap Trim: 9-1/4 (23.5)
20-1/4
(51.4)
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 10/02/13. Specifications subject to change without notice.
LGH-8-ROUND-LENS
PAGE 2 OF 3
Page 3
8” LGH
90°
100
150
200
250
90°
Average
100
150
200
250
Round Lens
Wet Location, Vertical Metal Halide Lamp
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
LGH 100M 8RW T73
500
0
0
0
0
0° 10° 20° 30°
Average
LGH 100M 8RW FFL
500
0
0
0
0
0° 10° 20° 30°
80°
70°
60°
50°
40°
80°
70°
60°
50°
40°
100W ED17 LAMP, 1.0 S/MH, 7900 RATED LUMENS, TEST NO. LTL14368
From 0° AveLumens
0
2599
5
2576
2424
2014
1395
833
446
238
91
22
0
244
680
918
871
647
405
237
103
25
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
1841.8
0° - 30°
2713.2
0° - 40°
3765.2
0° - 60°
4130.0
0° - 90°
90° - 180°
0° - 180°
0.0
4130.0
*E fficiency
*52.3
23.3
34.3
47.7
52.3
0.0
pf
80%70% 50%
pc
50%30% 50%30% 50%30%
pw
1
.56
.51
.46
.42
.38
.35
.32
.30
.28
.26
.54
.48
.42
.38
.34
.31
.28
.26
.24
.22
2
3
4
5
6
7
8
9
10
100W ED17 LAMP, 1.0 S/MH, 7900 RATED LUMENS, TEST NO. LTL14369
From 0° AveLumens
0
2837
5
2794
2641
1964
1198
731
442
220
75
18
0
265
733
896
754
568
396
220
83
20
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
1894.0
0° - 30°
2647.9
0° - 40°
3612.6
0° - 60°
3936.2
0° - 90°
90° - 180°
0° - 180°
0.0
3936.2
*E fficiency
*49.8
24.0
33.5
45.7
49.8
0.0
pf
80%70% 50%
pc
50%30% 50%30% 50%30%
pw
1
.54
.49
.44
.40
.37
.34
.31
.29
.27
.25
.52
.46
.41
.37
.33
.30
.28
.25
.23
.22
2
3
4
5
6
7
8
9
10
.55
.50
.45
.41
.37
.34
.32
.29
.27
.25
.53
.48
.43
.39
.36
.33
.31
.29
.27
.25
20%
20%
.53
.47
.42
.37
.34
.31
.28
.26
.24
.22
.51
.45
.40
.36
.33
.30
.27
.25
.23
.22
.53
.48
.44
.40
.36
.33
.31
.29
.27
.25
.51
.46
.42
.38
.35
.33
.30
.28
.26
.25
.52
.46
.41
.37
.33
.30
.28
.25
.23
.22
.49
.44
.39
.35
.32
.29
.27
.25
.23
.22
Mount
height
8
10
12
14
16
Mount
height
8
10
12
14
16
Inital fc
at be am
center
85.9
46.2
28.8
19.7
14.3
Inital fc
at be am
center
93.8
50.4
31.4
21.5
15.6
50% be am angle
54.9°
fc at
beam
Beam
diameter
edge
43.0
5.7
23.1
7.8
14.4
9.9
9.8
12.0
7.1
14.0
50% be am angle
50.9°
fc at
beam
Beam
5.2
7.1
9.0
10.9
12.8
edge
46.9
25.2
15.7
10.7
7.8
diameter
10% be am angle
92.2°
fc at
beam
Beam
diameter
edge
8.6
11.4
4.6
15.6
2.9
19.8
2.0
23.9
1.4
28.1
10% be am angle
88.1°
fc at
beam
Beam
10.6
14.5
18.4
22.3
26.1
edge
9.4
5.0
3.1
2.1
1.6
diameter
PHOTOMETRY NOTES
• Tested to current IES and NEMA standards under stabilized laboratory conditions.
• Actual performance may differ as a result of end-user environment and application.
• Consult factory or IES file for microgroove baffle, black cone or other photometric reports.
LGH-8-ROUND-LENS
PAGE 3 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 10/02/13. Specifications subject to change without notice.
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