Calculite
®
Incandescent Open Downlight 782/7782
Page 1 of 2 4 1/2” Aperture A19/A21/A23/MB19 Ellipsoidal Reflector
Job Information Type:
Job Name:
Cat. No.:
Lamp(s):
Notes:
Lightolier a Genlyte Thomas Company www.lightolier.com
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division) • A0902
Features
1. Socket Cup: Die-cast aluminum cup effectively dissipates heat and assures
lamps maintain proper optical alignment to reflector. Snaps onto reflector
neck for easy tool-less installation. Can be adjusted without tools from
inside or outside of fixture to accommodate different lamp sizes. Contains
medium base porcelain socket with nickel plated screw shell wired and No
18 SF1 leads to J-Box.
2. Mounting Brackets: Adjust vertically from inside of fixture. Durable 16
ga. steel construction. Use with standard 3/4" or1 1/2" lathing channels (by
others), or Lightolier accessory mounting bars.
3. Retaining Springs: Precision tooled springs secure aperture mounting
frame for quick tool-less installation.
4. Reflector: Specular clear Alzak
®
upper reflector, retained by spring latches
for inspection and maintenance, top relampable.
5. Junction Box: 14 ga. steel, 4" x 3 1/2" x 2" box.
6. Thermal Protector: Meets NEC and UL requirements. Insulation must be
kept 3" away from fixture sides and wiring compartments and must not be
placed above fixture in a manner which will entrap heat.
7. Aperture Cone: 16 ga. Specular Alzak
®
aluminum,or optical black multi-
groove. Available with white or polished flange or with removable white
molded trim ring (field paintable).
8. Multi-Groove Baffle: One piece seamless aluminum. Sharply detailed
concentric rings with "sawtooth" profile, optical black finish.
9. Mounting Collar: Die-formed steel painted in baked black enamel.
Other Reflector Finish Options
Comfort Clear Diffuse CCD
Specular Black BK
Specular Gold GD
Black Multi-Groove MG
(MG is only available with molded trim ring.)
Flange Options
White W
Polished Flange P
Flangeless Leave Blank (molded trim ring)
Accessories and Options
18" Mounting Bars 1950 (set of 2)
27" Mounting Bars 1951 (set of 2)
T-Bar Anchor Clips 1956 (set of 4, for 1950 & 1951 bars)
Wood Joist Mtg. Bars 7994 (set of 2)
Sloped Ceiling Adapters 7920 (see SCA specification sheet)
Step Down Transformer 7997 (see separate specification sheet)
Chicago Air Plenum LC (add suffix to Frame-in Kit)
Electrical
UL Listed for maximum of 8 No. 12, 75°C through branch circuit conductors, or
60°C supply conductors for end of run.
Labels
UL Listed for damp locations, I.B.E.W.
Alzak
®
is a registered trademark of ALCOA.
Molded
Trim Ring
Flush Trim
(Molded
trim ring removed)
White or
Polished Flange
Top View
Ceiling Cutout: 5 1/16” Dia.
Reflector Trims Frame-In Kit Lamp
782CLW Specular Clear finish with white flange 7782 A19 100W
782CLP Specular Clear finish with polished flange MB19 100W
782CL Specular Clear finish with molded trim ring (flangeless) A21 150W
782 Add suffix for other finishes (see options) A23 150W
Calculite
®
Incandescent Open Downlight 782/7782
Page 2 of 2 4 1/2” Aperture A19/A21/A23/MB19 Ellipsoidal Reflector
Lightolier a Genlyte Thomas Company www.lightolier.com
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division) • A0902
Job Information Type:
80% Ceiling; 50% Walls; 20% Floor
Room Surface Reflectances:
100W A19
1700 Lumens Per Lamp
RCR = 10 (Rm. Width - Mtg. Ht. above work plane)
RCR = 5 (Rm. Width - 2 x Mtg. Ht. above work plane)
RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)
CENTER TO CENTER DISTANCE OF FIXTURES IN FEET
AREA PER FIXTURE IN SQUARE FEET
INITIAL FOOTCANDLES
3 4 5 6 7 8 9 10 11 12 13 14
20 40 60 80 100 120 140 160 180
5
10
15
20
25
30
35
40
80% Ceiling; 50% Walls; 20% Floor
Room Surface Reflectances:
150W A23
2700 Lumens Per Lamp
RCR = 10 (Rm. Width - Mtg. Ht. above work plane)
RCR = 5 (Rm. Width - 2 x Mtg. Ht. above work plane)
RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)
CENTER TO CENTER DISTANCE OF FIXTURES IN FEET
AREA PER FIXTURE IN SQUARE FEET
INITIAL FOOTCANDLES
3 4 5 6 7 8 9 10 11 12
25 50 75 100 125
10
20
30
40
50
60
200
400
90
60
30
600
800
COEFFICIENTS OF UTILIZATION
%
EFFECTIVE CEILING CAVITY REFLECTANCE
80 70 50 30 10 0
ROOM CAVITY RATIO
20% FLOOR CAVITY REFLECTANCE
50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
.43 .42 .41 .42 .41 .40 .40 .40 .39 .39 .38 .38 .38 .37 .37 .36
.40 .39 .38 .40 .38 .37 .38 .37 .37 .37 .37 .36 .36 .36 .35 .34
.38 .36 .35 .38 .36 .35 .37 .35 .34 .36 .35 .34 .35 .34 .33 .33
.36 .34 .33 .36 .34 .33 .35 .33 .32 .34 .33 .32 .33 .32 .31 .31
.34 .32 .31 .34 .32 .30 .33 .31 .30 .32 .31 .30 .32 .31 .30 .29
.32 .30 .29 .32 .30 .29 .31 .30 .29 .31 .30 .28 .30 .29 .28 .28
.30 .28 .27 .30 .28 .27 .30 .28 .27 .29 .28 .27 .29 .28 .26 .26
.29 .27 .25 .29 .27 .25 .28 .26 .25 .28 .26 .25 .28 .26 .25 .25
.27 .25 .24 .27 .25 .24 .27 .25 .23 .26 .25 .23 .26 .24 .23 .23
.26 .24 .22 .25 .23 .22 .25 .23 .22 .25 .23 .22 .25 .23 .22 .21
1
2
3
4
5
6
7
8
9
10
% WALL REFLECTANCE
COEFFICIENTS OF UTILIZATION
%
EFFECTIVE CEILING CAVITY REFLECTANCE
80 70 50 30 10 0
ROOM CAVITY RATIO
20% FLOOR CAVITY REFLECTANCE
50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
.52 .51 .50 .51 .50 .49 49 .48 .48 .47 .47 .46 .46 .45 .45 .44
.49 .47 .46 .48 .47 .45 .47 .46 .45 .45 .44 .44 .44 .43 .43 .42
.47 .45 .43 .46 .44 .43 .45 .43 .42 .44 .42 .41 .43 .41 .41 .40
.44 .42 .40 .44 .42 .40 .43. .41 .40 .42 .40 .39 .41 .39 .39 .38
.42 .39 .38 .41 .39 .38 .40 .39 .37 .40 .38 .37 .39 .38 .37 .36
.40 .37 .36 .39 .37 .35 .39 .37 .35 .38 .36 .35 .37 .36 .35 .34
.38 .35 .33 .37 .35 .33 .37 .35 .33 .36 .34 .33 .36 .34 .33 .32
.35 .33 .31 .35 .33 .31 .35 .33 .31 .34 .32 .31 .34 .32 .31 .30
.34 .31 .29 .33 .31 .29 .33 .31 .29 .32 .31 .29 .32 .30 .29 .29
.32 .29 .28 .32 .29 .28 .31 .29 .28 .31 .29 .28 .31 .29 .27 .27
1
2
3
4
5
6
7
8
9
10
% WALL REFLECTANCE
Conversion Factor: For 150W A21 units, multiply C.U.’s by 0.9
200
400
90
60
30
600
800
E.T.L, INC. REPORT NO. 385348-A
11-14-62
EFFICIENCY: 46.5%
E.T.L, INC. REPORT NO. 385349-1
12-06-62
EFFICIENCY: 38.5%
DEG CP ZONAL FLUX
2 1/2 825 20
7 1/2 900 64
12 1/2 980 116
17 1/2 880 185
22 1/2 880 185
27 1/2 710 180
32 1/2 530 156
37 1/2 282 94
42 1/2 117 43
47 1/2 38.4 16
52 1/2 11.4 5
DEG CP ZONAL FLUX
2 1/2 555 13
7 1/2 665 48
12 1/2 745 88
17 1/2 755 124
22 1/2 685 144
27 1/2 595 151
32 1/2 427 126
37 1/2 197 66
42 1/2 59.0 22
47 1/2 16.2 7
52 1/2 3.2 1
ZONE LUMENS % LAMP
0-30 568 33.5
0-40 760 44.5
0-60 790 46.5
SPACING RATIO = 1.3 SPACING RATIO = 1.2
Candlepower Summary
Candlepower Summary
ZONE LUMENS % LAMP
0-30 727 27.0
0-40 977 36.0
0-60 1042 38.5
Use quick calculator chart to determine spacing of luminaires for desired level of
illumination. Conversion Factors: 150W A21; F.C. X 1.3
Use quick calculator chart to determine spacing of luminaires for desired level of
illumination.
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