Lightolier SD manual Performance, Fixture Lengths & Mounting Locations, Sample Run

Lighting Systems Silhouette® SD

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Performance

CANDLEPOWER CURVE

180˚	175˚	165˚	155˚	145˚	135˚
1250
1000					125˚
		0˚	90˚
750					115˚
500					105˚
250					95˚
0					90˚
250					85˚
500					75˚
750					65˚
1000					55˚
1250
0˚	5˚	15˚	25˚	35˚	45˚
REPORT NO: LRL 299-1F
CAT NO: SD24I281WH
LAMPS: 2 F28T5
LUMENS: 2900
EFFICIENCY: 82.2%

		CANDLEPOWER								COEFFICIENTS OF UTILIZATION
ZONE	0	22	45	67	90				% EFFECTIVE CEILING CAVITY REFLECTANCE
DEG.		CANDLELAS								80			70			50
180	1091	1091	1091	1091	1091						WALL REFLECTANCE
175	1088	1089	1094	1096	1097				70	50	30	70	50	30	50	30	10
165	1051	1081	1104	1117	1111		0		82	82	82	73	73	73	55	55	55
155	1006	1029	1097	1128	1142	RATIO	1		75	71	68	66	63	60	48	46	44
135	732	810	885	967	974		3		62	54	49	54	48	43	37	33	31
145	890	942	1059	1097	1112	CAVITY	2		68	62	57	60	55	51	42	39	37
125	582	688	781	823	780		4		57	48	42	50	43	37	32	29	26
115	389	513	555	549	536		5		52	43	36	45	38	32	29	25	22
105	219	314	284	270	256	ROOM	6		47	38	32	42	34	28	26	22	19
95	47	71	71	73	75		7		44	34	28	38	30	25	23	19	17
90	10	29	47	58	61		8		40	31	25	36	27	22	21	17	15
85	21	46	64	76	80		9		37	28	22	33	25	20	19	15	13
75	71	83	102	117	120		10		35	25	19	31	22	17	17	14	11
65	113	112	125	139	143					20% FLOOR CAVITY REFLECTANCE
55	173	172	166	119	172							DISTRIBUTION
45	204	210	201	198	198			Zone
											Lumens		% Lamp		% Luminaire
35	243	246	247	238	239
25	269	270	272	272	272			0-90			979		16.9			20.5
15	281	284	286	286	282			90-180			3790		65.3			79.5
5	286	286	289	287	287			0-180			4769		82.2			100.0
0	286	286	286	286	286

Calculations are for 28 watt T5 lamps, for 54 watt T5 lamps multiply by 1.7

Quick Calculator and Ceiling Brightness

	2,000	FOOTCANDLE					20	30	50	70	100
FEET	1,000
	700
SQUARE
	500
IN	400
AREA
	300
ROOM	200
	100
	1	2	3	4	5	7	10	20	30	40 50	70	100	200
					NUMBER OF FIXTURES REQUIRED

1.Find room area on vertical axis.

2.Move across chart to footcandle curve.

3.Move down to horizontal axis and read number of fixtures required.

Suspension Length	12"	18"	24"
Footlamberts Above Fixture	209	143	110
Footlamberts Between Fixtures	20.7	21.1	23.9
Ceiling Brightness Ratio	10.1	6.8	4.6

Reflectances of 80% ceiling, 50% walls and 20% floor. Light loss factor is .85, Room size is 50' x 50',

Run Spacing 10’. Ceiling Height 9’ to 12’. Values are taken from the center of the room.

Fixture Lengths & Mounting Locations

4-Foot Joiner		5/8” (1.59cm)
		8-Foot Joiner
	48” (121.92cm)

1-1/4” (3.18cm)

96” (243.84cm)

Sample Run	8-Foot Joiner	4-Foot Joiner	8-Foot Joiner	Cable
Power Feed				Assembly
End Set	96” (243.84cm)	48” (121.92cm)	96” (243.84cm)

20’ 1/8” (609.92cm)

Mounting & Joiner Block Accessories

4.6” (11.68cm)

4” (10.16cm)

8”

(20.32cm)

4” (10.16cm)

8” (20.32cm)
4” (10.16cm)
3.4”	4”
(8.64cm)	(10.16cm)

Cable Assembly	Power Feed End Set	“L”Block with Suspension		“X” Block with Suspension		“T” Block with Suspension
SC36	SE36WH (white)	SL36WH (white)		SX36WH (white)		ST36WH (white)
	SE36AL (aluminum)	SL36AL (aluminum)		SX36AL (aluminum)		ST36AL (aluminum)
Inline block available (SI36WH or SI36AL).
			Job Information		Type:


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We reserve the right to change details of design, materials and finish.

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