3.6.4
Handholes
Handholes shall be located approximately as shown. Handholes shall be of
the type noted on the drawings and shall be constructed in accordance with
the details shown.
3.6.5
Pullboxes
Pullbox tops shall be flush with sidewalks or curbs or placed 15 mm 1/2 inch
above surrounding grades when remote from curbed roadways or sidewalks.
Covers shall be marked "Low-Voltage" and provided with 2 lifting eyes and 2
hold-down bolts. Each box shall have a suitable opening for a ground rod.
Conduit, cable, ground rod entrances, and unused openings shall be sealed
with mortar.
3.6.6
Ground Rods
A ground rod shall be installed at the manholes, handholes and pullboxes.
Ground rods shall be driven into the earth before the manhole floor is
poured so that approximately 100 mm 4 inches of the ground rod will extend
above the manhole floor. When precast concrete manholes are used, the top
of the ground rod may be below the manhole floor and a No. 1/0 AWG ground
conductor brought into the manhole through a watertight sleeve in the
manhole wall.
3.7
PAD-MOUNTED EQUIPMENT INSTALLATION
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NOTE: Provide a typical concrete pad detail for
each different piece of equipment by size range
(typical dimensions and weight). The pad detail
should depict welded wire fabric or steel
reinforcing bars, sized and spaced as required to
support the equipment. Exact pad dimensions are
equipment specific and are the responsibility of the
Contractor. Require grouting of rectangular holes
(windows) in the concrete pad if rodent intrusion is
a problem.
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Pad-mounted equipment, shall be installed on concrete pads in accordance
with the manufacturer's published, standard installation drawings and
procedures, except that they shall be modified to meet the requirements of
this document. Units shall be installed so that they do not damage
equipment or scratch painted or coated surfaces. After installation,
surfaces shall be inspected and scratches touched up with a paint or
coating provided by the manufacturer especially for this purpose.
Three-phase transformers shall be installed with [_____] phase sequence.
Primary taps shall be set at [_____].
3.7.1
Concrete Pads
3.7.1.1
Construction
Concrete pads for pad-mounted electrical equipment [may be either
pre-fabricated or] [shall be] poured-in-place. Pads shall be constructed
as indicated, except that exact pad dimensions and mounting details are
equipment specific and are the responsibility of the Contractor. Tops of
concrete pads shall be level and shall project 100 mm 4 inches above
SECTION 16375A
Page 58
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