Gotham 10 LGH SpecSheet

Luminaire Type:
Catalog Number
(autopopulated):

Gotham Architectural Downlighting
HID Downlights

10” 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 150MHC 10RW T73 120 HEB

Series Wattage/Lamp

LGH

Metal halide

2

150M
175M3175W ED28

250M3 250W BT28

1

150W ED17

Door frame Lens type Voltage Ballast Options

10RW Regressed

white door

10SB Stepped

black baffle

T73 Tempered

prismatic lens

FFL Flat fresnel lens
FOL Flat opal lens

Color-corrected
metal halide

2

150MHC

150W ED17

250MHC3250W BT28

ELECTRICAL SYSTEM

• Die-cast aluminum lampholder housing.

• Mogul-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. Metal halide: 175W &
250W must specify pulse start ballast module (SCWA).

• 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

4

120
277
347

(blank)

5

SCWA

6

Electronic

HEB

Probe start
Pulse start

CP Chicago Plenum

7

TRDA
RRL

Tamper resistant door assembly

8

RELOC®-ready luminaire. Provides
compatibility with Lithonia RELOC system.
Access above ceiling required.

9

QRS
QRSTD
EC

Quartz Restrike System

9

Quartz Restrike System with time delay

9

Emergency circuit

DC129Emergency circuit, 12-volt, 35W DCB lamp

ships separately

SF Single fuse
GSKT Foam gasketing, ships uninstalled
WLP Lamp (shipped separately)

ACCESSORIES order as separate catalog numbers (shipped separately)

SCA10

Sloped ceiling adapter. Degree of slope must be specified (10D, 15D, 20D, 25D, 30D). Ex: SCA10 10D.

ORDERING NOTES

1. Recommended for use with coated lamps.

2. California Title 20 compliant. Only available with HEB ballast.

3. Must specify SCWA to be EISA compliant.

4. 347V only.

5. Required for 175M and above.

LGH-10-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.

6. 120 or 277V only.

7. Uses Torx T15 rejection pin drive system.

8. For compatible RELOC systems, refer to TECH-110.

9. Not available in combination with each other.

10” LGH
Round Lens

Wet Location, Vertical Metal Halide Lamp

DIMENSIONAL DATA

All dimensions are inches (centimeters) unless otherwise noted.

14-1/4

20-1/8

(36.2)

(51.1)

Aperture: 9-3/4 (24.8)
Ceiling Opening: 10-1/2 (26.7)

23-3/4

Overlap Trim: 10-7/8 (27.6)

(60.3)

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.

LGH-10-ROUND-LENS

PAGE 2 OF 3

10” LGH

0° 10° 20° 30°

90°

1200

2400

3600

4800

6000

pf

20%

0° 10° 20° 30°

90°

pf

20%

0° 10° 20° 30°

90°

1300

2600

3900

5200

6500

0° 10° 20° 30°

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 250M 10RW T73

LGH 250M 10SB T73

1100

2200

3300

4400

5500

80°

70°

60°

50°

40°

80°

70°

60°

50°

40°

250W BT28 LAMP, 1.1 S/MH, 21500 RATED LUMENS, TEST NO. LTL14542P

From 0° AveLumens

0

6798

5

6756
6490
5758
4382
2791
1446

698
233

59

0

641
1827
2634
2729
2150
1314

702

271

66

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

6102.3

0° - 30°

7831.2

0° - 40°

11295.3

0° - 60°

12334.3

0° - 90°

90° - 180°

0° - 180°

0.0

12334.3

*E ciency

*57.4

23.7

36.4

52.5

57.4

0.0

pf
pc

80%70% 50%

pw

50%30% 50% 30% 50%30%

1

.62

2

.55

3

.50

4

.45

5

.41
.38

6

.34

7

.32

8

.29

9

.27

10

.60
.52
.46
.41
.37
.33
.30
.27
.25
.23

.60

.54
.49
.44
.40
.37
.34
.31
.29
.27

20%

250W BT28 LAMP, 1.1 S/MH, 21500 RATED LUMENS, TEST NO. LTL14543P

From 0° AveLumens

0

5816

5

5784
5471
4798
3575
2057

853
247

12

2
0

548
1539
2194
2221
1588

782

260

29

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°

90° - 180°

0° - 180°

2

4280.5

6501.4

8871.0

9162.4

0.0

9162.4

*E ciency

19.9

30.2

41.3

42.6

0.0

*42.6

80% 70% 50%

pc

50% 30% 50% 30% 50% 30%

pw

1

.46

.45
.40
.36
.32
.29
.26
.24
.22
.20
.19

.45
.41
.38
.34
.32
.29
.27
.25
.23
.21

2

.42

3

.38

4

.35

5

.32

6

.29

7

.27

8

.25

9

.23

10

.22

.59
.51
.45
.41
.36
.33
.30
.27
.25
.23

.44
.39
.35
.32
.29
.26
.24
.22
.20
.19

.58
.52
.47
.43
.39
.36
.33
.31
.28
.27

.44
.40
.37
.34
.31
.28
.26
.24
.23
.21

.57
.50
.44
.40
.36
.32
.29
.27
.25
.23

.43
.38
.35
.31
.28
.26
.24
.22
.20
.19

Mount
height

8
10
12
14
16

Mount
height

8
10
12
14
16

Inital fc
at be am

center

224.7

120.9

75.3

51.4

37.3

Inital fc

at be am

center

192.3

103.4

64.4

44.0

31.9

50% be am angle

59.3°
fc at

beam

Beam

6.3

8.5

10.8

13.1

15.4

edge

112.4

60.4

37.7

25.7

18.7

diameter

50% be am angle

58.3°
fc at

beam

Beam

diameter

edge

6.1

8.4

10.6

12.8

15.0

10% be am angle

Beam

diameter

12.3

16.8

21.2

25.7

30.2

10% be am angle

Beam

diameter

96.1

51.7

32.2

22.0

16.0

96.4°

11.7

15.9

20.2

24.4

28.7

beam

93.4°

fc at

edge

22.5

12.1

7.5

5.1

3.7

beam

fc at

edge

19.2

10.3

6.4

4.4

3.2

LGH 250M 10RW FFL

LGH 250M 10SB FFL

1200

2400

3600

4800

6000

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-10-ROUND-LENS

PAGE 3 OF 3

250W BT28 LAMP, 1.0 S/MH, 21500 RATED LUMENS, TEST NO. LTL14544P

From 0° AveLumens

80°

0
5

70°

15
25

60°

35
45

50°

55
65
75

40°

85
90

6211
6058
5610
4675
3466
2322
1269

586
182

43

0

572
1570
2142
2169
1784
1149

589

208

49

Zone Lumens % Lamp

4283.7

0° - 30°

6452.8

0° - 40°

9386.0

0° - 60°

10231.5

0° - 90°

90° - 180°

0° - 180°

0.0

10231.5

*E ciency

*52.5

22.0

33.1

48.2

52.5

0.0

80% 70% 50%

pc

50% 30%50% 30% 50% 30%

pw

1

.56

.55

.55

2

.51

.48

3

.46

.42

4

.41

.38

5

.38

.34

6

.34

.30

7

.32

.28

8

.29

.25

9

.27

.23

10

.25

.21

.50
.45
.41
.37
.34
.31
.29
.27
.25

.54
.47
.42
.37
.33
.30
.27
.25
.23
.21

.53
.48
.43
.40
.36
.33
.31
.28
.26
.24

.52
.46
.41
.36
.33
.30
.27
.25
.23
.21

250W BT28 LAMP, 1.0 S/MH, 21500 RATED LUMENS, TEST NO. LTL14545P

.44
.39
.35
.31
.28
.26
.23
.21
.20
.18

.44
.40
.37
.34
.31
.28
.26
.24
.22
.21

20%

.43
.38
.34
.31
.28
.25
.23
.21
.20
.18

.43
.39
.36
.33
.30
.28
.26
.24
.22
.21

90°

From 0° AveLumens

80°

70°

60°

50°

40°

0

5
15
25
35
45
55
65
75
85
90

6242
6064
5500
4497
3270
2040

933
285

15

2
0

570
1538
2061
2040
1565

852

294

30

2

Zone Lumens % Lamp

4169.0

0° - 30°

6208.6

0° - 40°

8625.6

0° - 60°

8951.4

0° - 90°

90° - 180°

0° - 180°

0.0

8951.4

*E ciency

*41.6

19.4

28.9

40.1

41.6

0.0

pf

80%70% 50%

pc

50%30% 50%30% 50%30%

pw

1

.45

2

.41

3

.37

4

.34

5

.31

6

.29

7

.26

8

.24

9

.23

10

.21

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.

.42
.37
.34
.30
.27
.25
.23
.21
.19
.18

Mount
height

8
10
12
14
16

Mount
height

10

12

14

16

8

Inital fc

at be am

center

205.3

110.4

68.8

47.0

34.1

Inital fc
at be am

center

206.3

111.0

69.2

47.2

34.2

50% be am angle

54.5°
fc at

beam

Beam

edge

diameter

102.6

5.7

55.2

7.7

34.4

9.8

23.5

11.9

17.0

13.9

50% be am angle

52.8°
fc at

beam

Beam

5.5

7.4

9.4

11.4

13.4

edge

103.2

55.5

34.6

23.6

17.1

diameter

10% be am angle

95.2°
fc at

beam

Beam

diameter

edge

20.5

12.1

11.0

16.4

6.9

20.8

4.7

25.2

3.4

29.6

10% be am angle

92.5°
fc at

beam

Beam

11.5

15.7

19.9

24.0

28.2

edge

20.6

11.1

6.9

4.7

3.4

diameter