Lightolier 5243 specifications Spacing Ratio =, Room

	Decorative Lumidome™ Contemporary 5243
Page 2 of 2	Ceiling or Wall Mounted Compact Fluorescent

INITIAL FOOTCANDLES

80

70

60

50

40

30

20

10

2 Light - 36/39W Quad Tube

2900 Lumens Per Lamp

RCR = 1 (60' x60'x8.5' room) RCR = 5 (12' x12'x8.5' room) RCR = 10 (6' x6'x8.5' room)

Room surface reflectances

80% Ceiling,50% Walls,20% Floor

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

Use quick calculator chart to determine the number and spacing of luminaries for a desired level of illumination.

For 3 light - 26W Quad Tube units multiply FC’s by 0.95

SPACING RATIO = 1.3

180 150 120

ACROSS 45 ALONG

90

400

60

800

1200

0 30

CERTIFIED TEST REPORT NO. 1045FR

COMPUTED BY LSI PROGRAM **TEST-LITE**

LIGHTOLIER SURFACE UTILITY FLOURESCENT LUMIDOME
CAT. 5241WH239F1 WITH TWIST LOCK ACRYLIC DIFFUSER
2-39W DULUX L SYL.LAMPS. LUMEN RATING = 2900 LMS.
	ROBERTSON BALLAST #RER2LT8-120H,120VAC
CANDLEPOWER DATA
ANGLE	CANDLEPOWER	LUMENS	ANGLE CANDLEPOWER		LUMENS
0	850		95	83	92
5	846	81	100	62
10	836		105	49	54
15	819	232	110	41
20	795		115	39	39
25	766	354	120	38
30	730		125	38	35
35	688	432	130	39
40	640		135	39	30
45	589	456	140	38
50	532		145	38	25
55	472	423	150	38
60	410		155	38	18
65	349	348	160	37
70	291		165	35	10
75	237	253	170	31
80	189		175	32	4
85	147	162	180	33
90	108
ZONAL LUMENS AND PERCENTAGES
ZONE	LUMENS	% LAMP	%LUMINAIRE
0-30	666	11.48	21.92
0-40	1097	18.92	36.11
0-60	1975	34.05	65.01
0-90	2735	47.17	90.04
40-90	1638	28.25	53.93	TESTED ACCORDING TO IES
60-90	760	13.12	25.03
90-180	302	5.22	9.96	PROCEDURES. TEST DISTANCE EXCEEDS
0-180	3038	52.39	100.00	FIVE TIMES THE GREATEST LUMINOUS
** EFFICIENCY = 52.4% **				OPENING OF LUMINAIRE.

COEFFICIENTS OF UTILIZATION ZONAL CAVITY METHOD %EFFECTIVE FLOOR CAVITY REFLECTANCE = .20

		80	70	50	30		10
		50 30 10	50 30 10	50 30 10	50 30	10	50 30 10	0
	1	.53 .50 .48	.51 .49 .47	.48 .46 .44	.45 .43 .42		.42 .41 .40	.38
RATIO	2	.46 .42 .39	.44 .41 .38	.42 .39 .37	.39 .37 .35		.37 .35 .33	.32
	4	.36 .31 .28	.35 .31 .27	.33 .29 .26	.31 .28 .26		.29 .27 .25	.23
CAVITY	3	.40 .36 .33	.39 .35 .32	.37 .33 .31	.35 .32 .29		.33 .30 .28	.27
	6	.29 .24 .21	.28 .23 .20	.26 .23 .20	.25 .22 .19		.24 .21 .18	.17
ROOM	5	.32 .27 .24	.31 .27 .23	.29 .26 .23	.28 .24 .22		.26 .24 .21	.20
	8	.23 .19 .16	.22 .18 .15	.21 .18 .15	.20 .17 .15		.19 .16 .14	.13
	7	.26 .21 .18	.25 .21.17	.24 .20 .17	.22 .19 .16		.21 .18 .16	.15
	9	.21 .17 .14	.21 .16 .14	.19 .16 .13	.19 .15	.13	.18 .15 .12	.11
	10	.19 .15 .12	.19 .15 .12	.18 .14 .12	.17 .14	.11	.16 .13 .11	.10

DETERMINED IN ACCORDANCE WITH CURRENT IES PUBLISHED PROCEDURES For 3 light - 26W Quad Tube units multiply CU’s by 0.95

Job Information	Type:
Lightolier a Genlyte 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.

© 2005 Genlyte Group LLC • B0305