Gotham 8 LGF SpecSheet

Luminaire Type:
Catalog Number
(autopopulated):

Gotham Architectural Downlighting
Compact Fluorescent Downlights

8” LGF

Round Lens

Wet Location
Horizontal Triple-Tube Lamp

FEAT URES ORDERING INFORMATION

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) provided standard with
white painted flange.

• 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 three 1/2” knockouts for straight-through conduit
runs. Capacity: 8 (4 in, 4 out) No. 12 AWG conductors, rated for 90°C.

EXAMPLE: LGF 2/26TRT 8RW T73 MVOLT

ELECTRICAL SYSTEM

• Galvanized steel lampholder housing.

• Horizontally-mounted, four-pin, positive-latch, thermoplastic socket(s).

• Class P, thermally protected, high-power-factor, electronic ballast(s) mounted to
the junction box.

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

Series Number of lamps/ Wattage/Lamp Door frame Lens type Voltage Ballast

3

LGF 1

18TRT

2

26TRT

1

32TRT
42TRT

2

57TRT

8RW Regressed

white door

8SB Stepped

black baffle

T73 Tempered prismatic lens
FFL Flat fresnel lens
FOL Flat opal lens
PPC Prismatic polycarbonate

lens

MVOLT
120
277
347

(blank) Electronic ballast (standard)

ECOS Lutron

ADEZ

4

®

EcoSystem® electronic dimming

ballast. Minimum dimming level 5%.

5

Advance Mark 10® electronic dimming bal­last. Minimum dimming level 5%

Options

7

CP Chicago plenum

6

TRDA

Tamper-resistant door assembly

DS Dual switching
GMF Single, slow-blow fuse (not available with MVOLT)
GLR Single, fast-blow fuse (not available with MVOLT)
WLP 3500 K lamp (shipped separately)

ELR

Emergency battery pack with remote test switch

GSKT Foam gasketing ships uninstalled

8

NEPP

Interface for Sensor Switch® nLight® network provided with integral power supply. Refer to

TN-623-01. Not for use with emergency options.

RRL__

RELOC®-ready luminaire connectors enable a simple and consistent factory installed op­tion across all ABL luminaire brands. Refer to RRL for complete nomenclature.

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.

NSP5 D ER KIT

LGF-8-ROUND-LENS

PAGE 1 OF 3

Sensor Switch nLight secondary relay and dimming pack device used to switch and dim luminaires powered via an emergency circuit. Refer to NSP5 D ER KIT.

GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com

© 2005-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 02/11/14. Specifications subject to change without notice.

8” LGF
Round Lens

Wet Location, Horizontal Triple-Tube Lamp

DIMENSIONAL DATA NOTES

All dimensions are inches (centimeters) unless otherwise noted.

15-7/8
(40.3)

7-7/8

(20.1)

Aperture: 7-7/8 (20.1)
Ceiling Opening: 8-7/8 (22.5)
Overlap Trim: 9-1/4 (23.5)

14-1/2
(36.8)

ORDERING NOTES

1. Will also operate 26DTT 4-PIN lamp.

2. Single lamp only, Sylvania or Philips.

3. Multi-volt electronic ballast capable of operating on any voltage from 120V
through 277V, 50 or 60 Hz.

4. For additional ballast types, refer to TECH-250.

5. 120 or 277V only.

GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com

© 2005-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 02/11/14. Specifications subject to change without notice.

6. Uses Torx T20 rejection pin drive system. You may order RK1 T20DRV U Torx
driver accessory.

7. For dimensional changes refer to TECH-140. For 57W and 70W consult factory.

8. For Emergency applications order non-nLight enabled fixture and NSP5 D ER
KIT as an accessory. Refer to NSP5 D ER KIT.

LGF-8-ROUND-LENS

PAGE 2 OF 3

8” LGF

90°

100

200

300

400

500

600

700

0° 10° 20° 30°

90°

1000

pf

20%

90°

1200

1500

0° 10° 20° 30°

1200

1500

Round Lens

Wet Location, Horizontal Triple-Tube Lamp

PHOTOMETRY

Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor

LGF 1/42TRT 8RW T73

80°

70°

60°

50°

40°

0° 10° 20° 30°

LGF 1/42TRT 8RW FFL

80°

200

400

600

800

70°

60°

50°

40°

42TRT LAMP, 1.1 S/MH, 3200 RATED LUMENS, TEST NO. LTL14210

From 0° AveLumens

0

781

5

780
741
625
431
243
116

55
22

74
208
285
269
188
106

56

24

5

6

0

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

566.9

0° - 30°

835.4

0° - 40°

1129.4

0° - 60°

1215.5

0° - 90°

90° - 180°

0° - 180°

0.0

1215.5

*E fficiency

*38.0

17.7

26.1

35.3

38.0

0.0

pf
pc

80%70% 50%

pw

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

.41

1

.37

2

.34

3
4

.31

5

.28

6

.26

7

.24

8

.22

9

.20

10

.19

42TRT LAMP, 0.9 S/MH, 3200 RATED LUMENS, TEST NO. LTL14211

From 0° AveLumens

0

1023

5

1017

922
679
397
207
127

65
24

96
257
309
247
163
114

65

26

6
0

15
25
35
45
55
65
75
85
90

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

90° - 180°

0° - 180°

6

662.4

909.6

1186.5

1284.0

0.0

1284.0

*E fficiency

20.7

28.4

37.1

40.1

0.0

*40.1

pc

80% 70%50%

pw

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

1

.43

2

.39

3

.36

4

.33

5

.30

6

.28

7

.26
.24

8
9

.22
.21

10

.40
.35
.31
.28
.25
.23
.21
.19
.18
.16

.42
.37
.33
.30
.27
.25
.23
.21
.20
.18

.40

.36
.33
.30
.28
.25
.23
.22
.20
.19

.43
.39

.35
.32
.30
.27
.25
.24
.22
.21

20%

.39
.35
.31
.28
.25
.23
.21
.19
.18
.16

.41
.37
.33
.30
.27
.25
.23
.21
.20
.18

.39
.35
.32
.29
.27
.25
.23
.21
.20
.19

.41
.37
.34
.31
.29
.27
.25
.23
.22
.20

.38
.34
.30
.27
.25
.22
.21
.19
.17
.16

.40
.36
.32
.29
.27
.24
.22
.21
.19
.18

Mount
height

8
10
12
14
16

Mount
height

10

12

14

16

8

Inital fc
at be am

center

25.8

13.9

8.7

5.9

4.3

Inital fc

at be am

center

33.8

18.2

11.3

7.7

5.6

50% be am angle

56.4°
fc at

beam

Beam

diameter

edge

12.9

5.9

6.9

8.0

4.3

10.2

3.0

12.3

2.1

14.5

50% be am angle

49.7°
fc at

beam

Beam

5.1

6.9

8.8

10.6

12.5

edge

16.9

9.1

5.7

3.9

2.8

diameter

10% be am angle

91.6°
fc at

beam

Beam

diameter

edge

2.6

11.3

1.4

15.4

0.9

19.5

0.6

23.6

0.4

27.8

10% be am angle

83.7°
fc at

beam

Beam

edge

diameter

9.9

13.4

17.0

20.6

24.2

3.4

1.8

1.1

0.8

0.6

LGF 2/42TRT 8RW T73

80°

300

600

900

0° 10° 20° 30°

70°

60°

50°

40°

LGF 2/42TRT 8RW FFL

90°

80°

300

600

900

70°

60°

50°

40°

42TRT LAMP, 1.1 S/MH, 3200 RATED LUMENS, TEST NO. LTL14198

From 0° AveLumens

0

1603

5

1597
1502
1270

893
500
238
112

44
11

0

151
421
580
555
388
218
113

49
12

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

1152.6

0° - 30°

1708.0

0° - 40°

2313.3

0° - 60°

2487.5

0° - 90°

90° - 180°

0° - 180°

0.0

2487.5

*E fficiency

*38.9

18.0

26.7

36.1

38.9

0.0

pf
pc
pw

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

1
2
3
4
5
6
7
8
9

10

42TRT LAMP, 1.1 S/MH, 3200 RATED LUMENS, TEST NO. LTL14217

From 0° AveLumens

0

1621

5

1640
1638
1390

924
481
266
135

51
11

0

157
460
633
573
379
240
135

54
13

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

1250.0

0° - 30°

1823.2

0° - 40°

2442.3

0° - 60°

2643.9

0° - 90°

90° - 180°

0° - 180°

0.0

2643.9

*E fficiency

*41.3

19.5

28.5

38.2

41.3

0.0

pf
pc
pw

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

1

.45

2

.40

3

.37

4

.33

5

.30

6

.28

7

.26

8

.24

9

.22

10

.21

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.

LGF-8-ROUND-LENS

PAGE 3 OF 3

GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com

© 2005-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 02/11/14. Specifications subject to change without notice.

.43
.38
.34
.30
.27
.25
.23
.21
.19
.18

.41
.36
.32
.29
.26
.23
.21
.20
.18
.17

.44
.40
.36

.33
.30
.28
.26
.24
.22
.21

.41
.37
.34

.31
.28
.26
.24
.22
.21
.19

20%

20%

.42
.38
.33
.30
.27
.25
.23
.21
.19
.18

.40
.35
.32
.28
.26
.23
.21
.20
.18
.17

.42
.38
.35
.32
.29
.27
.25
.23
.22
.20

.40
.36
.33
.30
.28
.25
.23
.22
.20
.19

80%70% 50%

.42
.38
.34
.31
.29
.26
.24
.23
.21
.20

80% 70% 50%

.41
.37
.33
.29
.27
.24
.22
.21
.19
.18

.39
.34
.31
.28
.25
.23
.21
.19
.18
.17

Mount
height

10
12
14
16

Mount
height

8
10
12
14
16

8

Inital fc
at be am

center

53.0

28.5

17.8

12.1

8.8

Inital fc

at be am

center

53.6

28.8

18.0

12.3

8.9

50% be am angle

56.1°
fc at

beam

Beam

5.9

8.0

10.1

12.3

14.4

Beam

6.1

8.3

10.6

12.8

15.0

58.1°

edge

26.5

14.2

8.9

6.1

4.4

fc at

beam

edge

26.8

14.4

9.0

6.1

4.4

diameter

50% be am angle

diameter

10% be am angle

91.6°
fc at

beam

Beam

11.3

15.4

19.5

23.7

27.8

Beam

11.2

15.2

19.3

23.3

27.4

90.9°

edge

5.3

2.8

1.8

1.2

0.9

fc at

beam

edge

5.4

2.9

1.8

1.2

0.9

diameter

10% be am angle

diameter