transformer neutral connections shall not be smaller than No. 1/0 AWG.
When work, in addition to that indicated or specified, is directed to
obtain the specified ground resistance, the provision of the contract
covering "Changes" shall apply.[ Fence and equipment connections shall not
be smaller than No. 4 AWG. Ground fence at each gate post and corner post
and at intervals not exceeding 3050 mm 10 feet. Bond each gate section to
the fence post through a 3 by 25 mm 1/8 by one inch flexible braided copper
strap and clamps.]
3.2.3
Connections
Make joints in grounding conductors and loops by exothermic weld or
compression connector. Exothermic welds and compression connectors shall
be installed as specified in Section 16302N UNDERGROUND TRANSMISSION AND
DISTRIBUTION, paragraph entitled "Grounding".
3.2.4
Ground Cable Crossing Expansion Joints in Structures and Pavements
Protect from damage by means of approved devices or methods of installation
to allow the necessary slack in the cable across the joint to permit
movement. Provide stranded or other approved flexible copper cable across
such separations.
3.2.5
Grounding and Bonding Equipment
UL 467, except as indicated or specified otherwise.
3.3
INSTALLATION OF EQUIPMENT AND ASSEMBLIES
Install and connect unit substations furnished under this section as
indicated on project drawings, the approved shop drawings, and as specified
herein.
3.3.1
Medium-Voltage Switchgear and Load Interrupter Switches
IEEE C37.20.2 and IEEE C37.20.3 as applicable.
3.3.2
Meters and Instrument Transformers
NEMA C12.1.
3.3.3
Galvanizing Repair
Repair damage to galvanized coatings caused by handling, transporting,
cutting, welding, or bolting. Make repairs in accordance with ASTM A 780,
zinc rich paint. Do not heat surfaces that repair paint has been applied
to.
3.4
FOUNDATION FOR EQUIPMENT AND ASSEMBLIES
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NOTE: Mounting slab connections may have to be
given in detail depending on the requirements for
the seismic zone in which the equipment is located.
Include construction requirements for concrete slab
only if slab is not detailed in drawings. Curbs or
raised edges may also be required around liquid
filled transformers.
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SECTION 16361N
Page 40
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