Lightolier MBS2GPW1FT Page 2 of, Photometry, Ordering Information, Options/Accessories, Type, Iw

Mini-Beam 2' x 2' Recessed Fluorescent MBS2GPW1FT

Page 2 of 2 Direct/Indirect, Static, 1 Lamp, TT5, 55, 50 or 40 Watt

Photometry Model No. MBS2GPW1FT120BF

G2004038

MBS2GPW1FT120BF

THIS REPORT IS BASED ON PUBLISHED INDUSTRY PROCEDURES • FIELD PERFORMANCE MAY VARY FROM LABORATORY PERFORMANCE.

LER = FL - 47.8			IW - 60.9		BF - 0.92
Comparative yearly lighting energy cost per 1000 lumens = $5.02
	coefficients of utilization — zonal cavity method							(effective floor cavity reflectance 0.20)
		RF		20					20					20
		RC		80					50					30
		RW	70	50		30		50	30	10		50		30	10
		1	72	69		66		64	62	60		62		60	58
	ratio	2	65	59		55		56	52	49		54		51	48
		3	59	52		46		49	44	41		47		43	40
	cavity	4	54	46		40		43	38	34		42		37	34
		5	50	41		35		39	33	29		37		33	29
	room	6	46	37		30		35	30	26		34		29	25
		7	42	33		27		31	26	23		30		26	22
		8	39	30		24		29	24	20		28		23	20
		9	37	28		22		26	22	18		26		21	18
		10	34	25		20		24	20	16		24		19	16
	visual comfort probability
		room size				ceiling height						ceiling height
	W		L		8.5	10.0	13.0		16.0		8.5	10.0	13.0		16.0
20			20		56	64	75		86		46	55	69		83
20			30		53	57	64		74		41	44	52		66
20			40		53	55	60		66		39	41	45		53
	20		60		53	55	57		61		38	39	41		46
30			20		55	62	72		83		49	56	68		80
30			30		51	55	61		70		43	45	51		63
30			40		51	52	56		62		40	41	43		50
30			60		51	52	53		57		38	39	39		43
	30		80	lengthwise	52	53	52		56	crosswise	39	39	38		41
40			40		51	52	54		60		42	43	44		50
40			20		56	61	70		80		52	58	68		79
40			30	luminaries	52	54	59		68	luminaries	45	47	52		63
40			60		51	51	51		55		40	41	40		43
40			80		52	52	51		53		40	40	38		40
	40		100		53	53	51		53		41	40	38		39
60			30		53	55	58		66		48	50	53		63
60			40		52	52	53		58		45	45	45		50
60			60		51	51	50		53		42	42	40		43
60			80		52	51	49		51		42	41	38		40
	60		100		53	52	50		51		42	41	38		39
100			40		55	55	54		58		50	50	49		54
100			60		54	53	51		53		47	46	44		46
100			80		55	53	50		51		46	45	41		43
	100		100		55	54	50		50		47	44	40		40

Ordering Information

Explanation of Catalog Number. Example: MBS2GPW1FT120BFGLR

MB

S

2

G

P

Mini-Beam

Body Style:

Fixture

Ceiling Type:

Perforated

Direct/Indirect

S = Static

Width

Fits both

Lamp Shield

Recessed

Standard Grid

with Perforated

and

Mesh Shield

Slot Grid

MN

For Local 3

Manufacturing

For Local 3 Manufacturing, substitute

MN

for

MB

. Example: MNS2GPW1FT120BFGLR

.

W

White

Reflector

1

Lamp

Quantity

FT

	Voltage:			Options:
	120 or 277			Add appropriate
				suffix to catalog
Lamp:			Ballast:	no, ie: (GLR)
(By others)		BF = 55 watt TT5
FT = TT5		<10THD RS
		BE = 50 watt TT5
		<20THD RS
		SB = 40 watt TT5
		<20THD IS

Options/Accessories

Fusing: Internal fast-blow fusing. Suffix: GLR. Internal slow-blow fusing. Suffix: GMF.

Electrical/Wiring Options: Consult factory.

Specifications

Performance: In an installation of 1 lamp 55W luminaires in a room cavity of 1, with reflectance of 80% ceiling, 50% walls, 20% floor, the C.U. shall not be less than .69. To reduce glare the average brightness at 65° shall not exceed 3804 candelas per square meter. To control veiling reflections, luminaire output in the 30°-90° zone shall not be less than 74.8%.

Materials: Housing is die-formed 20 gauge steel.

Finish: Chassis exterior–baked white acrylic enamel. Reflector–baked flat white acrylic enamel, minimum 86% reflectance. Phosphate undercoating. Lamp Shield–baked flat white acrylic enamel.

Electrical: Thermally protected class “P” ballast C.B.M. approved, non PCB. If K.O. is within 3" of ballast, use wire suitable for at least 90°.

Labels: I.B.E.W./UL and ULc Listed.

Job Information	Type:
Lightolier a Genlyte Thomas Company		www.lightolier.com
Technical Information: (978) 657-7600 • Fax (978) 658-0595
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.
Copyright 2004 Lightolier		Section5/Folio M20-15