Lightolier Calculite, Incandescent Lensed Downlight 7794QD, Page 2 of, Job Information, Type

	Calculite®	®	Incandescent Lensed Downlight 7794QD
	Calculite
	Incandescent
Page 2 of 2	Lensed Downlight			7 3/8” Aperture Horizontal Lamp Fresnel Lenslite

INITIAL FOOTCANDLES

40

35

30

25

20

15

10

5

100 Watt A-19

1750 Lumens Per Lamp

RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane) RCR = 5 (Rm. Width - 2Mtg. Ht. above work plane) RCR = 10 (Rm. Width - Mtg. Ht. above work plane)

Room Surface Reflectances:

80% Ceiling; 50% Walls; 20% Floor

25 50 75 100 125 150 175 200 225 AREA PER FIXTURE IN SQUARE FEET

3 4 5 6 7 8 9 10 11 12 13 14 15

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

Use quick calculator chart to determine spacing of luminaires for desired level of illumination.

Conversion Factors:

Spacing Ratio = 1.1

	Candlepower Summary
90	DEG	CP	ZONAL FLUX
	0	697
150	5	686	65
	15	654	185
60
	25	634	294
	35	393	247
300	45	140	108
	55	53.4	48
	65	26.3	26
450	75	8.8	9
	85	2.6	3
30	90	0
600	ZONE	LUMENS	%
	0-30	544	32.0
	0-40	791	44.5
ETL, Inc. Report No. 387916-A	0-60	947	55.5
Date: 08-12-63	0-90	985	58.0
Efficiency: 55.5%

Coefficients of Utilization

% Effective ceiling cavity reflectance

			80				70			50			30			10		0
		50	30	10				% Wall reflectance							50	30	10	0
						50	30	10	50	30	10	50	30	10
	1	.64	.62	.61	.62		.61	.60	.60	.59	.58	.58	.57	.56	.56	.55	.54	.53
ratio	2	.60	.57	.55	.59		.56	.54	.57	.355	.53	.55	.53	.52	.53	.52	.51	.50
	3	.56	.53	.51	.55		.52	.50	.54	.51	.50	.52	.50	.49	.51	.49	.48	.47
	4	.52	.49	.47	.51		.49	.46	.50	.48	.46	.49	.47	.45	.48	.46	.45	.44
cavity
	5	.49	.46	.43	.49		.45	.43	.48	.45	.43	.47	.44	.42	.46	.44	.42	.41
	6	.46	.43	.40	.46		.43	.40	.45	.42	.40	.45	.42	.40	.43	.41	.39	.39
Room
	7	.43	.40	.38	.43		.40	.38	.42	.39	.37	.42	.39	.37	.41	.39	.37	.36
	8	.41	.37	.35	.40		.37	.35	.40	.37	.35	.39	.36	.34	.39	.36	.34	.34
	9	.38	.35	.32	.38		.35	.32	.37	.34	.32	.37	.34	.32	.36	.34	.32	.31
	10	.34	.30	.28	.34		.30	.28	.33	.30	.28	.33	.30	.28	.32	.30	.28	.27

20% Floor cavity reflectance Conversion Factor:

Job Information	Type:
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.

© 2003 Genlyte Thomas Group LLC (Lightolier Division) • B0303