Lightolier SC 1BHF

PG

, Performance, Fixture Lengths & Mounting Locations, Sample Run, Type

Lighting Systems Silhouette® SC

1BHF

PG

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Performance

CANDLEPOWER CURVE

180˚	175˚	165˚	155˚	145˚	135˚
1250
1000					125˚
750				90˚	115˚
500
		0˚			105˚
250					95˚
0					90˚
					85˚
					75˚
					65˚
					55˚
0˚	5˚	15˚	25˚	35˚	45˚
REPORT NO: LRL 299-1D
CAT NO: SC24I281WH
LAMPS: 2 F28T5
LUMENS: 2900
EFFICIENCY: 82.3%

		CANDLEPOWER							COEFFICIENTS OF UTILIZATION
ZONE	0	22	45	67	90			% EFFECTIVE CEILING CAVITY REFLECTANCE
DEG.		CANDELAS							80			70			50
180	828	828	828	828	828					WALL REFLECTANCE
175	827	836	848	868	870			70	50	30	70	50	30	50	30	10
165	811	880	963	1056	1062		0	78	78	78	67	67	67	46	46	46
155	761	909	1076	1273	1329	RATIO	1	71	68	65	61	58	56	40	38	37
145	668	905	1201	1423	1466		2	65	59	55	55	51	47	35	33	31
135	540	859	1177	1363	1409	CAVITY	3	59	52	47	50	45	40	31	28	26
125	422	821	1094	1298	1264		4	54	46	40	46	39	34	27	24	22
115	268	651	918	1023	1029		5	49	40	34	42	35	30	24	21	18
105	141	479	578	557	557	ROOM	6	45	36	30	38	31	26	21	18	16
90	10	15	12	11	12		8	38	29	23	32	25	20	17	14	12
95	33	128	129	121	117		7	41	32	26	35	28	23	19	16	14
85	0	0	0	0	0		9	35	26	20	30	22	18	16	12	10
75	0	0	0	0	0		10	33	24	18	28	21	16	14	11	9
65	0	0	0	0	0				20% FLOOR CAVITY REFLECTANCE
55	0	0	0	0	0					DISTRIBUTION
45	0	0	0	0	0
35	0	0	0	0	0		Zone		Lumens		% Lamp			% Luminaire
25	0	0	0	0	0		0-90			0		0.0			0.0
15	0	0	0	0	0		90-180			4776		82.3			100.0
5	0	0	0	0	0		0-180			4776		82.3			100.0
0	0	0	0	0	0

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	165	112	85.7
Footlamberts Between Fixtures	24.7	26.3	32.2
Ceiling Brightness Ratio	6.7	4.3	2.7

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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