Page 1
Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
Incandescent Downlights
8” A
Open Reflector
A21, A23 or PS25 Lamp
FEAT URES ORDERING INFORMATION NOTES
OPTICAL SYSTEM
• Reflector: Self-flanged, semi-specular, matte-diffuse or specular reflector.
Patented Bounding Ray™ Optical Principle design (U.S. Patent No. 5,800,050)
provides lamp before lamp image and smooth transition from top of reflector to
bottom. Minimum flange matches reflector finish.
• Baffle/cone: Semi-specular clear upper reflector. Microgroove baffle with white
painted flange or specular black cone with flange that matches cone finish.
MECHANICAL SYSTEM
• 16-gauge galvanized steel mounting/plaster frame with friction support springs
to retain optical system. Accommodates up to 7/8” thick ceiling standard.
• 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 two 1/2” knockouts for straight-through conduit
runs. Capacity: 8 (4 in, 4 out) No. 12 AWG conductors rated for 90°C.
EXAMPLE: A 8AR
ELECTRICAL SYSTEM
• Die-cast aluminum lampholder housing.
• Medium-base porcelain socket with nickel-plated screw shell.
• Thermally-activated insulation detector.
LISTING
• Fixtures are UL Listed for thru-branch wiring, non-IC recessed mounting and
damp 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
Series1Aperture/Trim color Finish Lens type Options
A 8AR Clear
8PR Pewter
8WTR Wheat
8GR Gold
2
8WR
White painted
2
8MB
Black baffle
2
8WB
White baffle
2
8BC
Black cone
(blank) Semi-specular
LD Matte-diffuse
LS Specular
(blank) No lens
CGL Clear glass lens
T73 Tempered prismatic lens
SDT Stepdown transformer (277V to 120V)
SDT347 Stepdown transformer (347V to 120V; 75W max.)
SF Single fuse
3
TRW
TRBL
GSKT Foam gasketing
RRL RELOC
White painted flange
Black painted flange
®
-ready luminaire. Provides compatibility with Lithonia
RELOC system. Access above or below ceiling required.
CP Chicago plenum
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.
CTA4-8 YK Trim rentention yoke with tempered steel flat spring.
ORDERING NOTES
1. Maximum wattage: 150W A21-IF lamp; 200W A23-IF or 300W PS25-IF lamp.
2. Not available with finishes.
3. Standard on 8WR, 8MB, and 8WB.
4. For compatible RELOC systems, refer to Tech 110.
A-8-OPEN
PAGE 1 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2009-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/01/13. Specifications subject to change without notice.
Page 2
8” A
2W
Open Reflector
A21, A23 or PS25 Lamp
DIMENSIONAL DATA ELECTRICAL
All dimensions are inches (centimeters) unless otherwise noted.
H
15-7/8 (40.3)
Aperture: 7-7/8 (20.1)
13-5/8 (34.6)
Ceiling opening: 8-7/8 (22.5)
Overlap trim:9-1/4 (23.5)
Lens Recess: 3(9.8)
Height Information
egattaWW051W00
150W A 21 200 W A23300W PS 25
8A
8A
8/1-01
(25.7)
4/3-9
CB/BM
8/1-11
(28.3)
)67.52(
)87.42(
)52.82(
4/3-01
)72.72(
(29.8)
003
4/3-11
)77.92(
61/5-11
)97.82(
ENERGY
(Ca lculated in accordance eith NEMA standard LE-5A)
Annual*
Energy
LER.DOL
13
13
15
*
Comparative yearly lighting energy cost per 1000 lumens
Cost
$18.39
$17.89
$16.28
Lamps
(1) 150W A21
(1) 200W A23
(1) 300W PS25
Lamp
Lumens
2850
3800
6300
Ballast
Factor
N/A
N/A
N/A
Input
Watts
100
150
300
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2009-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev.07/01/13. Specifications subject to change without notice.
A-8-OPEN
PAGE 2 OF 3
Page 3
8” A
f20%
10 43 39 43 39 42 39
%1
1680
ρf 20%
2400
ρf20%
10 42 37 41 37 41 37
%1
ρf 20%
%1
Open Reflector
A21, A23 or PS25 Lamp
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
A 8AR (150 A21)
90
340
680
1020
1360
1700
o
0
A 8AR (200 A23)
90
600
1200
1800
3200
o
0
o
From 0° cp. Lumens
0° 1535 0
5° 1576 151
15° 1637 463
25° 1547 697
o
45
35° 852 511
45° 78 85
55° 23
65° 00
75° 00
85° 00
90° 00
o
From 0° cp. Lumens
0° 2895 0
5° 2845 266
15° 2502 713
25° 2346 1043
o
35° 1001 640
45
45° 96 104
55° 78
65° 01
75° 00
85° 00
90° 00
(1) 150A LAMP, 2780 RATED LUMENS, 1.2 S/MH, TEST NO. LTL7618
Zone Lumens %lamp
0°-30°1311 47.2
0°-40°1822 65.6
0°-60°1911 68.7
0°-90°1911 68.7
90°-180° 0 0.0
0°-180° 1911 68.7*
*Efficiency
(1) 200A LAMP, 3930 RATED LUMENS, 1.1 S/MH, TEST NO. LTL8058
Zone Lumens %lamp
0°-30° 2023 51.5
0°-40° 2663 67.8
0°-60° 2775 70.6
0°-90° 2776 70.6
90°-180°0 0.0
0°-180° 2776 70.6*
*Efficiency
ρc80% 70% 50%
ρw 50% 30% 50%30% 50%30%
1767475737271
2716870676765
3666265626360
4615761575956
5575357535552
6544953495248
7504650464945
8474347434642
9444044404340
ρc 80% 70% 50%
ρw 50% 30% 50% 30%50% 30%
1787777757473
2737072696967
3686567646563
4646063596158
5605659555854
6565255515451
7524852485148
8494549454845
9474246424642
10 44 40 44 40 43 39
50
Initial fc fc at fc at
Mount at beam Beam beam Beambeam
height center diameter edge diameter edge
8' 50.7 6.6' 25.3 9.2' 5.1
10' 27.3 9.0' 13.6 12.6' 2.7
12' 17.0 11.4' 8.5 15.9'1.7
14' 11.6 13.8' 5.8 19.3'1.2
16' 8.4 16.2'4.2 22.7' 0.8
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 95.7 5.9' 47.9 8.6' 9.6
10' 51.5 8.0' 25.711.7' 5.1
12' 32.1 10.1' 16.0 14.8' 3.2
14' 21.9 12.3' 10.9 18.0' 2.2
16' 15.9 14.4' 7.921.1' 1.6
beam angle 61.9° beam angle 80.0°
50% 10%
beam angle 56.1° beam angle 75.9°
0%
A 8AR (300 PS25)
o
From 0° cp. Lumens
840
2520
3360
4200
90
o
0
0° 4193 0
5° 4115 386
15° 37801074
25° 36461626
o
35° 17091067
45
45° 178 185
55° 13 14
65° 33
75° 00
85° 00
90° 00
A 8MB (150 A21)
o
90
240
480
720
960
1200
o
0
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.
From 0° cp. Lumens
0° 975 0
5° 989 95
15° 1076 306
25° 1148 516
o
45
35° 700 432
45° 179 143
55° 17 17
65° 19 18
75° 02
85° 00
90° 00
(1) 300PS LAMP, 6200 RATED LUMENS, 1.1 S/MH, TEST NO. LTL7631
Zone Lumens %lamp
0°-30°3086 49.8
0°-40°4154 67.0
0°-60°4352 70.2
0°-90°4355 70.2
90°-180° 0 0.0
0°-180° 435570.2*
*Efficiency
(1) 150A LAMP, 2780 RATED LUMENS, 1.3 S/MH, TEST NO. LTL7616
Zone Lumens %lamp
0°-30° 917 33.0
0°-40° 1349 48.5
0°-60° 1509 54.3
0°-90° 1529 55.0
90°-180° 00.0
0°-180° 1529 55.0*
*Efficiency
ρ
ρc80% 70% 50%
ρw 50% 30% 50%30% 50% 30%
1787676757372
2727071696967
3676466636562
4635962596158
5595558545754
6555155515350
7524751475047
8494448444744
9464245414541
ρc80% 70%50%
ρw50% 30% 50% 30%50% 30%
1605959585756
2565355535351
3524951484947
4484447444643
5444144404340
6413741374037
7383538343734
8363235323531
9333033303229
10 31 28 31 27 30 27
50
Initial fc fc at fc at
Mount at beam Beam beam Beambeam
height center diameter edge diameter edge
8' 138.66.1'69.38.8'13.9
10' 74.5 8.4' 37.3 12.0' 7.5
12' 46.5 10.6'23.215.2'4.6
14' 31.7 12.8'15.918.4'3.2
16' 23.0 15.1'11.521.6'2.3
Initial fc fc at fc at
Mount at beam Beam beam Beambeam
height center diameter edge diameter edge
8' 32.2 7.1' 16.1 10.4' 3.2
10'17.39.7' 8.7 14.1' 1.7
12' 10.812.3' 5.4 17.9'1.1
14'7.4 14.9'3.7 21.7' 0.7
16'5.3 17.4'2.7 25.5' 0.5
beam angle 58.2° beam angle 77.7°
50
beam angle 65.8° beam angle 86.8°
0%
0%
A-8-OPEN
PAGE 3 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2009-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/01/13. Specifications subject to change without notice.
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