16500-3
LIGHTING
Ballasts
1.
Ballasts shall be designed for continuous operation within the fixture provided
and utilizing the lamp(s) specified without overheating or any other detrimental
affects.
Ballasts shall be quiet in operation and of the lowest noise level generally
available. Fixtures shall suppress ballast noise. Ballasts considered by the
Engineer to have objectionable hum or noise shall be replaced immediately at
no additional cost.
Fluorescent Ballasts shall conform to U. L. and ANSI specifications and shall
display symbols of approval by the U. L. and of certification by the C.B.M. as
tested by the E.T.L.
The component parts of the ballast shall be designed, fabricated, and assembled
in accordance with the latest NEMA requirements. Ballasts shall be marked
"Class P" indicating approved integral ballast protection. Fluorescent ballasts
not "P" rated shall be individually fused at the ballast; fuses shall be cartridge
type, sized as recommended by the ballast manufacturer.
Ballasts shall be Electronic, high-power-factor, series-sequence type, with less
than 20% THD.
Fixtures with two lamps or multiples of two lamps shall have two-lamp
ballasts. Three-lamp ballasts shall not be used unless specified.
Ballasts for interior fixtures shall be rated for starting operation at ambient
temperatures to 50°F.
Ballasts for exterior fixtures shall be rated for starting operation at ambient
temperatures to minus 20°F. Acceptable ballast manufacturers: EBT, GE,
Magnetek, Motorola, Osram/Sylvania, or approved equal.
High intensity discharge ballasts shall be constant wattage type; have power
factor of not less than 90%; be approved by E.T.L. and C.B.M. and have a UL
label. Starting current shall not exceed operating current. Ballast shall
maintain lamp operation for voltage fluctuations of plus or minus 10% of rated
voltage. Voltage rating shall correspond to voltage of circuit to which ballast
will be connected. Ballasts for exterior fixtures shall be rated for operation at
ambient temperatures to minus 20°F. Ballasts shall have single or double
fusing per Lighting Fixture Schedule shown on Contract Drawings.
10. All ballasts shall have a minimum two (2) year material and labor guarantee.
Fixture Supports and Hangers
1.
Provide all necessary mounting brackets and boxes, suitable for the area in
which it is to be installed, as required for a complete functioning installation for
all lighting for project.
Provide all necessary hangers and supports for proper fixture installation.
Fixture supports shall be capable of supporting a minimum of two and one-half
times the load normally carried at point of support.
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