Complete Compiled Specification.pdf - Peck Ormsby Construction

Starters shall be two-speed type or explosion-proof type where required.
Provide a heater index bound in the mechanical section of the O & M manuals for all starters furnished on the
project.
MOTORS:
Motors shall be furnished and installed under the applicable Mechanical Sections of the Specifications.
Each motor shall be provided with a nameplate for the electrical characteristics shown on the Drawings or as
otherwise noted.
Motors shall be constructed and rated to deliver full nameplate capacity at the project altitude.
Horsepower shall be at least equal to that shown on the drawings. Where equipment is submitted and approved
for the installation which requires larger motor sizes than shown, the wire and starter sizes shall be increased
and means provided for operation and control suitable for the larger motors with no increase in cost to the
Owner.
Unless otherwise specified, or required for controller sequencing, all motors over 5 HP shall be premium
efficiency type, and all fractional HP single phase motors 1/2 HP & under shall be permanent split capacitor
(PSC) type.
Premium efficiency motors shall be based on CEE premium efficiency criteria for OPD motors at 1800 RPM.
HORSEPOWER NEMA PREMIUM EFFICIENCY
5 89.5%
7.5 91.0%
10 91.7%
15 93.0%
20 93.0%
25 93.6%
30 94.1%
40 94.1%
50 94.5%
Motors for V-belt drives shall be provided with cast iron or steel base, with slide rail and adjustable screw device
and shall be isolated by rubber-in-shear devices.
Motors shall have sufficient capacity to start and operate the machine it drives without exceeding the motor
nameplate rating at the speed specified or at any speed and load which may be obtained by the drive actually
furnished.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009
BASIC MATERIALS & METHODS 15050-16