Page 1
Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
HID Downlights
8” LGHZ
Round Lens
Wet Location
Horizontal 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 yoke 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: LGHZ 100M 8RW T73 120
Series Wattage/Lamp
LGHZ
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
Color-corrected metal halide
50MHC
50W ED17
70MHC 70W ED17
100MHC 100W ED17
ELECTRICAL SYSTEM
• Galvanized steel lampholder housing.
• Medium-base porcelain socket with nickel-plated screw shell.
• Prewired encased-and-potted, 120/277 or 120/347 ballast tray module. Module
can be attached before or after mounting of mounting/plaster frame.
• 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
TRDA Tamper resistant door assembly
2
RRL
QRS
QRSTD
EC
RELOC®-ready luminaire. Provides compatibility with Lithonia
RELOC system. Access above ceiling required.
3
Quartz Restrike System
4
Quartz Restrike System with time delay
5
Emergency Circuit
WLP Lamp (shipped separately)
SF Single fuse
GSKT Foam gasketing, ships uninstalled
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. For compatible RELOC systems, refer to TECH-110.
3. Not available with QRSTD or EC.
4. Not available with QRS or EC.
5. Not available with QRS or QRSTD
LGHZ-8-ROUND-LENS
PAGE 1 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2005-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/25/13. Specifications subject to change without notice.
Page 2
8” LGHZ
Round Lens
Wet Location, Horizontal Metal Halide Lamp
DIMENSIONAL DATA
All dimensions are inches (centimeters) unless otherwise noted.
7-7/8
(20.1)
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
© 2005-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/25/13. Specifications subject to change without notice.
LGHZ-8-ROUND-LENS
PAGE 2 OF 3
Page 3
8” LGHZ
90°
Avera
g
e
1200
1500
1800
0° 10° 20° 30°
100
150
200
250
3000
Round Lens
Wet Location, Horizontal Metal Halide Lamp
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
LGHZ 100M 8RW T73
300
600
900
0° 10° 20° 30°
LGHZ 100M 8RW FFL
500
0
0
0
0
80°
70°
60°
50°
40°
90°
80°
70°
60°
50°
40°
100W ED17 LAMP, 1.1 S/MH, 7900 RATED LUMENS, TEST NO. LTL14187
From 0° AveLumens
0
1948
5
1951
1864
1587
1100
620
295
143
56
14
0
185
523
724
685
480
270
144
63
16
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
1431.7
0° - 30°
2117.2
0° - 40°
2867.4
0° - 60°
3089.9
0° - 90°
90° - 180°
0° - 180°
0.0
3089.9
*E fficiency
*39.1
18.1
26.8
36.3
39.1
0.0
pf
80%70% 50%
pc
50%30% 50% 30%50% 30%
pw
1
.42
.38
.35
.32
.29
.26
.24
.23
.21
.20
.41
.36
.32
.29
.26
.24
.22
.20
.18
.17
2
3
4
5
6
7
8
9
10
100W ED17 LAMP, 0.9 S/MH, 7900 RATED LUMENS, TEST NO. LTL14188
From 0° AveLumens
0
2945
5
2907
2525
1752
941
508
327
167
62
14
0
273
703
798
590
398
292
168
66
16
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
1773.5
0° - 30°
2364.0
0° - 40°
3053.6
0° - 60°
3303.7
0° - 90°
90° - 180°
0° - 180°
0.0
3303.7
*41.8
*E fficiency
22.4
29.9
38.7
41.8
0.0
pf
80% 70% 50%
pc
50%30% 50%30% 50%30%
pw
1
.45
.41
.38
.34
.32
.29
.27
.25
.24
.22
.44
.39
.35
.32
.29
.26
.24
.22
.21
.20
2
3
4
5
6
7
8
9
10
.44
.40
.37
.34
.31
.29
.27
.25
.24
.22
.41
.37
.34
.31
.28
.26
.24
.22
.21
.19
20%
20%
.43
.38
.35
.31
.28
.26
.24
.22
.21
.19
.40
.36
.32
.28
.26
.23
.21
.20
.18
.17
.43
.39
.36
.33
.30
.28
.26
.25
.23
.22
.40
.36
.33
.30
.28
.25
.24
.22
.20
.19
.39
.35
.31
.28
.25
.23
.21
.19
.18
.17
.42
.37
.34
.31
.28
.26
.24
.22
.21
.19
Mount
height
8
10
12
14
16
Mount
height
8
10
12
14
16
Inital fc
at be am
center
64.4
34.6
21.6
14.7
10.7
Inital fc
at be am
center
97.4
52.4
32.6
22.3
16.2
50% be am angle
57.1°
fc at
beam
Beam
6.0
8.2
10.3
12.5
14.7
edge
32.2
17.3
10.8
7.4
5.3
diameter
50% be am angle
46.8°
fc at
beam
Beam
4.8
6.5
8.2
10.0
11.7
edge
48.7
26.2
16.3
11.1
8.1
diameter
10% be am angle
91.9°
fc at
beam
Beam
11.4
15.5
19.7
23.8
27.9
edge
6.4
3.5
2.2
1.5
1.1
diameter
10% be am angle
80.0°
fc at
beam
Beam
9.2
12.6
15.9
19.3
22.7
edge
9.7
5.2
3.3
2.2
1.6
diameter
LGHZ-8-ROUND-LENS
PAGE 3 OF 3
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.
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2005-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/25/13. Specifications subject to change without notice.
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