Lightolier 7 3/8 Triple Tube Horizontal Lamp, Page 2 of, Calculite CFL Open Downlight8037

	Calculite® CFL Open Downlight  8037
Page 2 of 2	7 3/8" Triple Tube Horizontal Lamp

42W

Quick Calculator

INITIAL FOOTCANDLES

80

70

60

50

40

30

20

10

ROOM SURFACE REFLECTANCES:

80% Ceiling; 50% Wall; 20% Floor

3200 Lumens Per Lamp

RCR= 1 (Rm. Width= 10xMtg. Ht. above work plane)

RCR= 5 (Rm. Width= 2xMtg. Ht. above work plane)

RCR=10 (Rm. Width= Mtg. Ht. above work plane)

		25		50	75		100	125	150	175	200
				AREA PER FIXTURE IN SQUARE FEET
3	4	5	6	7	8	9	10	11	12	13	14

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

This quick calculator chart determines the number and spacing of 1 It.- 42W PL-T units with clear reflector, for any level of illumination.

Spacing Ratio = 1.3

Report No.: LRL 796-1G

PREPARED BY: LIGHTING RESEARCH LABORATORY, INC

PREPARED FOR: LIGHTOLIER

DESCRIP.: 7-3/8" dia. x 7" Ht. recessed downlight

-open bottom spun semispecular reflector; tilted horizontal lamp BALLAST: LIGHTOLIER GLT423-120I.

LAMPS: 1 PLT-32W rated at 2400 LUMENS.

Spacing Ratio = 1.4

Report No.: LRL 796-1F

PREPARED BY: LIGHTING RESEARCH LABORATORY, INC

PREPARED FOR: LIGHTOLIER

DESCRIP.: 7-3/8" dia. x 7" Ht. recessed downlight

-open bottom spun semispecular reflector; tilted horizontal lamp BALLAST: LIGHTOLIER GLT423-120I.

LAMPS: 1 PLT-42W rated at 3200 LUMENS.

Candlepower Curve			CANDLEPOWER
	ZONE	0	22	45	67	90
	DEG.			CANDELAS
	90	0	0	0	0	0

0

Candlepower Curve

			CANDLEPOWER
	ZONE	0	22	45	67	90
85ϒ	DEG.		CANDELAS
	90	0	0	0	0	0

	85	0	0	1	1	1
	80	1	1	1	1	1
275	75	1	2	2	2	2
	70	2	2	3	3	3
60ϒ	65	4	4	4	4	4
	60	9	9	10	11	10
	55	70	67	71	73	69
450	50	235	247	270	282	282
	45	328	333	377	430	462
	40	437	461	534	572	604
	35	598	585	632	654	683
	30	701	656	665	728	760
725	25	746	728	748	784	788
	20	759	802	807	811	808
	15	841	893	894	892	890
	10	897	921	919	916	915
	5	889	892	895	899	902
900	0	883	883	883	883	883
	ZONE LUMENS %BARE LAMP				%LUMINAIRE
30ϒ

** EFFICIENCY = 61.3% **	0-30	681	28.4	46.3
	0-40	1069	44.6	72.7
	0-60	1463	61.0	99.5
	0-90	1470	61.3	100.0
	40-90	401	16.7	27.3
	60-90	7	0.3	0.5
	90-120	0	0.0	0.0
	90-150	0	0.0	0.0
	90-180	0	0.0	0.0
Coefficients Of Utilization	0-180	1470	61.3	100.0

150

300

450

600

750

900

1050

1200

0ϒ 5ϒ 15ϒ 25ϒ 35ϒ

** EFFICIENCY = 65.4% **

Coefficients Of Utilization

	85	1	1	1	1	1
75ϒ	80	1	1	1	1	1
	75	3	3	3	3	3
	70	3	3	3	3	3
65ϒ	65	4	4	4	4	4
	60	9	9	9	9	9
	55	93	99	80	77	78
55ϒ	50	436	409	436	398	413
	45	634	622	634	663	680
	40	737	758	800	850	850
	35	866	905	920	951	948
	30	975	964	923	1022	1049
45ϒ 25		1045	1050	1030	1066	1103
	20	1053	1070	1077	1117	1148
	15	1074	1097	1148	1141	1176
	10	1046	1076	1091	1099	1121
	5	1004	1009	1017	1021	1020
	0	1002	1002	1002	1002	1002

ZONE	LUMENS	%BARE LAMP	%LUMINAIRE
0-30	896	28.0	42.8
0-40	1465	45.8	70.0
0-60	2084	65.1	99.6
0-90	2092	65.4	100.0
40-90	627	19.6	30.0
60-90	8	0.3	0.4
90-120	0	0.0	0.0
90-150	0	0.0	0.0
90-180	0	0.0	0.0
0-180	2092	65.4	100.0

				% EFFECTIVE CEILING CAVITY REFLECTANCE
			80			70			50			30			10		0
						% WALL REFLECTANCE
		50	30	10	50	30	10	50	30	10	50	30	10	50	30	10	0
RATIO	1	.67	.65	.63	.65	.64	.62	.63	.61	.60	.60	.59	.58	.58	.58	.57	.56
	2	.61	.58	.55	.60	.57	.55	.58	.55	.54	.56	.54	.52	.54	.53	.51	.50
	3	.55	.52	.49	.55	.51	.49	.53	.50	.48	.51	.49	.47	.50	.48	.46	.45
CAVITY	4	.51	.47	.44	.50	.46	.43	.49	.45	.43	.47	.45	.42	.46	.44	.42	.41
	5	.47	.42	.39	.46	.42	.39	.45	.41	.39	.44	.41	.38	.43	.40	38	.37
	6	.43	.38	.35	.42	.38	.35	.41	.38	.35	.40	.37	.35	.39	.37	.34	.33
ROOM	7	.39	.35	.39	.35	.32	.38	.34	.32	.37	.34	.31	.37	.34	.31	.30	.25
	8	.36	.32	.29	.36	.32	.29	.35	.32	.29	.35	.31	.29	.34	.31	.29	.28
	9	.34	.30	.27	.33	.29	.27	.33	.29	.27	.32	.29	.26	.32	.29	.26	.25
	10	.31	.27	.25	.31	.27	.24	.31	.27	.24	.30	.27	.24	.30	.26	.24	.23

20% FLOOR CAVITY REFLECTANCE

				% EFFECTIVE CEILING CAVITY REFLECTANCE
			80			70			50			30			10		0
						% WALL REFLECTANCE
		50	30	10	50	30	10	50	30	10	50	30	10	50	30	10	0
	1	.72	.70	.69	.71	.69	.68	.68	.67	.66	.65	.64	.64	.63	.62	.62	.61
RATIO	2	.67	.64	.62	.66	.63	.61	.64	.62	.60	.62	.60	.59	.60	.59	.57	.56
	3	.62	.59	.56	.61	.58	.56	.60	.57	.55	.58	.56	.54	.57	.55	.53	.52
CAVITY	4	.57	.54	.51	.57	.53	.50	.55	.52	.50	.54	.51	.49	.53	.50	.49	.48
	6	.49	.45	.42	.49	.45	.42	.48	.44	.42	.47	.44	.41	.46	.43	.41	.40
	5	.53	.49	.46	.53	.49	.46	.51	.48	.46	.50	.47	.45	.49	47	.45	.44
ROOM	7	.45	.41	.38	.45	.41	.38	.44	.40	.38	.43	.40	.37	.42	.40	.37	.36
	8	.42	.37	.34	.41	.37	.34	.40	.37	.34	.40	.36	.34	.39	.36	.34	.33
	9	.38	.34	.31	.38	.34	.31	.37	.33	.31	.36	.33	.30	.36	.33	.30	.29
	10	.33	.29	.26	.33	.29	.26	.32	.28	.26	.32	.28	.25	.31	.28	.25	.24

20% FLOOR CAVITY REFLECTANCE

Job Information Type:

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. www.lightolier.com © 2008 Philips Group • A0708

Lightolier is a Philips group brand