MPS Master
SECTION 26 50 00
LIGHTING
PART 1 - GENERAL
1.01
SUMMARY
A.
Section Includes: Labor, materials, equipment, and services necessary for the complete
installation of the lighting systems as shown on Drawings and Specifications.
B.
Related Sections:
1.
2.
1.02
A.
1.03
Section 26 52 00: Emergency Lighting.
Section 26 53 00: Exit Signs.
ENERGY CODE REQUIREMENTS
General Requirements: Lighting shall conform to the latest State of Minnesota and Federal
Energy Codes.
SUBMITTALS
A.
Product Data: Submit manufacturer’s data on lighting, including photometric data prepared by
a nationally recognized testing laboratory.
B.
Shop Drawings: Contractor shall provide Shop Drawings and catalog cuts for every type of
lighting fixture. Contractor shall ensure that Drawings are complete in every respect before
submitting them for approval. Submit Shop Drawings in booklet form with separate sheet for
each fixture, assembled alphabetically in luminaire “type”, with proposed fixture and
accessories clearly indicated on each sheet.
C.
Construction Documents: Contractor shall review Drawings and Specifications. Anything
called for in the Specifications, but not noted on Shop Drawings, shall remain a part of the
Contract.
D.
Approval: General design is the only approval implied by the approval stamp.
1.04
A.
1.05
A.
QUALITY ASSURANCE
Regulatory Requirements: Fixtures shall be UL approved for the use intended. Outdoor
fixtures shall be UL labeled for wet or damp locations as required for the use intended.
1.
Comply with NEC as applicable to installation and construction of lighting fixtures.
2.
Comply with UBC as applicable to installation and construction of lighting fixtures.
3.
Provide fluorescent lamp ballasts that comply with Certified Ballast Manufacturers
Association standards and carry the CBM label.
LIGHTING REBATES
General Requirements: It is the intention to apply the Xcel Energy’s lighting rebate scheme to
the Project. Electrical Contractor shall secure, on behalf of the Owner, the maximum rebate.
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SECTION 26 50 00
This shall include all negotiations, providing substantiation where required, and making all
necessary arrangements on behalf of the Owner.
1.
Contractor shall obtain all appropriate rebate forms from the local electric utility.
2.
Contractor shall coordinate with the local electric utility to complete the rebate forms as
necessary.
3.
Contractor shall submit rebate forms and associated dealer invoices required by the local
electrical utility to the Engineer for purposes of final coordination between Owner and the
local electric utility.
4.
Include a copy with Closeout Documents; refer to Section 26 00 00.
5.
The following rebates have been approved for this Project:
a.
Occupancy Sensors
PART 2 - PRODUCTS
2.01
A.
MANUFACTURERS
Acceptable Manufacturers:
1.
Light fixture shall be Columbia, Cree, Gotham, HE Williams, Lithonia, Lusio, or Rab.
2.
Fixture lamps shall be furnished and installed by Contractor, and shall be manufactured by
General Electric, North American Phillips, or Sylvania.
3.
Fluorescent lamps shall be Sylvania, Octron 800 Series, rapid start lamps or Owner
approved equal, unless otherwise noted, with minimum 80 CRI, a color temperature of
3,500 degree K, a minimum of 36,000 hours based on 12-hour ’ON‘ cycle, have a low
mercury content, and Class P certified. Fluorescent fixtures shall have ballast factor of 90
or higher, with a crest factor of 1.7 or lower, and CBM certified.
a.
Fluorescent lamp ballasts shall be solid-state electronic of full light output type except
where dimming ballasts are noted. Ballasts shall be able to withstand voltage
transients in accordance with IEEE C62.41 for normal and common modes. Ballasts
shall operate at a frequency of not less than 20KHz, and a current total harmonic
distortion less than 15 percent. Ballasts shall have an average maximum input power
consumption in accordance with ANSI 82.2 methods as noted below. Ballast shall be
compatible for use with energy saving lamps:
Lamp
Input Watts
(1) FO32
37
(2) FO32
62
(3) FO32
90
(4) FO32
114
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SECTION 26 50 00
b.
c.
d.
Ballasts shall be Advance Mark V, Magnatek, Osram, Universal or Valmount.
High Intensity Discharge (HID) lamps shall be as scheduled. HID ballasts shall have
a power factor of 90 or higher, with a crest factor of 1.7 or lower, and shall be
encapsulated with a sound limiting and heat transmitting solid non-melt fill material.
Capacitor shall be mounted separately from ballast. Complete assembly of ballast
and fixtures shall have an operating sound level by test that will not exceed an NC-45
level curve.
Light Emitting Diode (LED) systems shall have a minimum color rendering index (CRI)
of 80, color temperature of 4000 degrees K and shall be rated for 70 percent lumen
output at 50,000 hours. LED shall be manufactured by Cree, Gotham, Lumtec, Lusio,
Phillips, or Rab.
B.
Exterior Fixtures: Exterior mounted light fixtures shall have cold weather ballasts for
operating temperature at minus 30 degrees F.
C.
Lenses: All lenses for fixtures shall be pure virgin acrylic lenses with minimum thickness of
0.125 inches and a minimum weight density of 8.0 ounce per square foot, unless otherwise
noted.
PART 3 - EXECUTION
3.01
A.
INSTALLATION
General Requirements:
1.
Manufacturer's labels shall be removed from exterior of fixtures.
2.
Fixtures should be installed at a time when the work of other trades in the area is
substantially complete to avoid damage or defacement after installation.
3.
Fixtures shall not be installed on ceilings until ceiling finishes are complete, except fixtures
may be installed on exposed T-bar ceilings after T-bars are installed and before tile
installation.
4.
Where floodlighting has been indicated, Electrical Contractor shall provide for adjusting
units during evening hours to Engineer's satisfaction.
5.
Directional fixtures shall be aimed as required by Owner's representative.
6.
Electrical Contractor shall coordinate fixture locations with the ceiling installation and shall
install fixtures in a uniform pattern to tiles or exposed grids. Fixtures shall be
symmetrically spaced with rows in alignment and parallel with the building features.
Measurements shall be taken from Architectural Drawings, unless dimensions are
indicated on Electrical Drawings.
7.
Furnish lighting fixtures complete with auxiliaries required for the proper, safe, and
distortion free installation in various ceiling construction in which they appear. Determine
ceiling types from Architectural Drawings and provide compatible fixtures.
8.
Install lighting fixtures in strict accordance with manufacturer’s recommendations and
instructions.
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SECTION 26 50 00
9.
Continuous rows of fixtures shall be rigidly aligned for true in-line appearance.
10. Pendant mounted fixtures shall be installed with bottom 80 percent of ceiling height from
floor or as otherwise noted on Drawings. In cases where conditions make this impractical,
contact Engineer for direction.
11. Fixtures shall be supported independent of ductwork and piping.
12. Whenever a lighting fixture or its hanger canopy is applied to a surface mounted outlet
box, a finishing ring shall be used to conceal the outlet box.
13. Make splices in internal wiring with approved insulated ”wire nut“ mechanical connectors,
suitable for the temperature and voltage conditions to which they are subjected.
14. Where dual switching of 4-lamp and 3-lamp, 2 by 4 fluorescent fixtures is shown, the
inboard lamps shall be wired to (1) ballast and the outboard lamps are wired to a second
ballast. All other 3-lamp and 4-lamp fixtures shall have a single ballast in accordance with
the Minnesota Energy Code. All 3-lamp fixtures shall be tandem wired in accordance with
the Minnesota Energy Code.
15. Use grounding type manufactured fixture whip or flexible conduit for lighting pigtails of no
more than 6 feet in length, and use grounding type connectors for installing same. MC
cable not allowed. No more than 4 whips from one J-box feeding lights.
16. Clean all lighting fixtures upon completion of installation and provide protection from
damage during remainder of construction.
3.02
A.
FIXTURE MOUNTING
General Requirements:
1.
Surface fixtures, other than fluorescent type, shall be securely fastened to outlet box
unless otherwise indicated.
2.
Recessed fixtures, except units to be laid into an exposed grid type ceiling, shall be
supported from building structural members or from concealed steel framing channels
1 1/2 inches or larger. No fixtures shall be supported from ceiling tiles.
3.
Individually mounted fluorescent fixtures shall be supported within 12 inches of each end
of fixture.
4.
Continuous row fluorescent fixtures shall be supported within 12 inches of end of each row
and at intervals not to exceed 48 inches along entire row.
5.
Chain hung fixtures shall be permitted only where specifically noted on Drawings. Chains
shall be spaced the same as supports described under this Section. Chains shall be
heavy duty, nickel or cadmium plated, suitable for weight of specific fixture. Jack chain
shall not be used. Unless otherwise indicated, chain hung fixtures shall be provided with a
grounded receptacle and grounded portable cords and plugs to feed individual units or
continuous rows as required. Chain hung fixtures shall be located on site to clear
mechanical ducts and equipment.
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3.03
A.
B.
SUPPORTS AND FASTENING
For Fixtures Not In Exposed T-Bar Grid Ceilings: Fixture supports, or outlet boxes used to
support fixtures, shall be securely fastened to building structural members or to concealed
steel ceiling framing channels 1 1/2 inches or larger. Fixture hanging rods shall be of adequate
dimensions to support fixture and shall be not less than 3/8- inch diameter. Fixture supports
shall be fastened to structure as follows:
1.
To concrete with steel expansion anchors set into a minimum of 1 1/2 inches of concrete
or with 3/8-inch minimum diameter toggle bolts through concrete.
2.
To wood with lag screws, a minimum 1/4-inch diameter entering wood structural members
a minimum of 2 inches.
3.
To 16 gauge steel channels where used to span building bar joists, structural members or
ceiling 1 1/2-inch minimum framing channels. Steel channels shall be Steel City, No. 6029
or equal, subject to compliance with requirements of the Contract Documents, and
furnished by Electrical Contractor.
For Fixtures In Exposed T-Bar Grid Ceilings: Fixtures shall be supported as follows:
1.
Lay-in fixtures shall be supported from structure as required by ceiling system installer.
a.
3.04
A.
Provide independent supports from building steel or other structural member at all (4)
corners of the fixture up to the structure in accordance with UBC Article 47.1813. All
lay-in fixtures shall be clipped to tee with (2) tee bar clips per State Building Code.
2.
All recessed fixtures in lay-in ceilings shall have manufactured fixture whip or flexible metal
conduit connections permitting fixture to be lifted out. Maximum flexible conduit shall not
exceed 6 feet. (1) to (4) fixtures may be served by a single common outlet box securely
fastened to structure. MC or AC cable not allowed.
3.
Provide and install fixture retainers or clips for each fixture.
4.
Recessed fixtures not designed to lay-in directly on grids shall be centered on ceiling tiles
and independently supported.
5.
Surface mounted fixtures shall be centered on T-bar grids and secured to that grid with
hanger clamps, clips or other approved fasteners designed for the purpose. Unless
otherwise noted, ceiling T-bar grid system shall be supported from the structure by ceiling
system installer.
6.
Supports shall be 16 gauge steel channel installed by this Contractor to span over top of
main T-bar grids. Steel channels shall be Steel City, No. 6029 or equal, subject to
compliance with requirements of the Contract Documents. Non-main T-bar grids shall not
be used to support steel channels. Unless otherwise noted, ceiling T-bar grid system shall
be supported from structure by ceiling system installer.
SPECIAL FIXTURE COORDINATION
Storage and Mechanical/Electrical Rooms: Contractor shall verify actual fixture locations
with Architect. Fixture locations shall be revised as required to clear all equipment, ducts, and
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SECTION 26 50 00
piping.
B.
3.05
A.
3.06
A.
Gymnasium and Physical Education Areas: Contractor shall verify actual fixture locations
with Architect. Fixture locations shall be revised as required to clear all ductwork, basketball
backstops, curtains, and ceiling mounted equipment.
FIELD QUALITY CONTROL
General Requirements:
1.
After all lighting fixtures have been installed and circuited, test fixtures to confirm
compliance to the design intent. Correct all malfunctions detected and retest.
2.
At Substantial Completion, replace all lamps that have failed or are observed to be
noticeably dimmed as judged by the Architect or Engineer. Furnish spare lamps
amounting to 15 percent (but not less than one lamp in each case) of each type and size
lamp used.
GROUNDING
General Requirements: Provide tight equipment grounding connection for each lighting
fixture installation where indicated.
END OF SECTION
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