Chemistry Building Generator
Auburn University
Engineer Project No.: 11028
Auburn Project No.: 06-140
16450
GROUNDING SYSTEM
1.0
GENERAL
1.01 SUMMARY
A. The General Provisions, Supplemental General Provisions, section 16010, and
Special Provisions apply to all Work specified in this Section.
B. This Section describes the materials and methods required to provide a
complete grounding system. Comply with other Division 16 Sections and
Drawings as applicable.
C. Furnish and install all equipment, materials, tools, and labor to provide a
complete grounding system.
D. Ground all metallic parts of the electrical system which are not intended to
carry current such as conduit, panelboards, cabinets and enclosures, etc., in
accordance with the NEC and applicable codes.
E. In non-metallic conduits, maintain continuity of equipment grounding by
installing an insulated grounding conductor and connected by an acceptable
method.
2.0
PRODUCTS
2.01 GENERAL
A. All equipment and materials provided under this Section of the Specifications
shall be new; UL listed, and bear the UL label.
B. All panel boards, etc. shall be provided with a copper equipment ground bar
bolted, brazed, or riveted to the associated enclosure or cabinet.
C. All conduit, raceways, junction boxes, pull boxes, etc. shall be made electrically
continuous by means of grounding conductors, bonding jumpers, grounding
bushings, etc. as required by the NEC and the authorities having jurisdiction.
D. Refer to other Sections for additional grounding requirements.
2.02 GROUNDING CONDUCTORS
A. All grounding electrode conductors shall be bare or green insulated copper
conductors sized per the NEC, unless noted on the Drawings. Where the
authorities having jurisdiction or local code requires grounding electrode
GROUNDING SYSTEM
16450 - 1
Chemistry Building Generator
Auburn University
Engineer Project No.: 11028
Auburn Project No.: 06-140
conductor sizing in excess of that shown on the Drawings or specified herein,
the larger size conductor shall be installed.
B. All equipment grounding conductors shall be green insulated copper
conductors sized as indicated on the Drawings. Where the authorities having
jurisdiction or local code requires equipment grounding conductor sizing in
excess of that shown on the Drawings or specified herein, the larger size
conductor shall be installed.
C. All bonding conductors shall be flexible copper bonding jumpers sized in
accordance with the NEC for grounding electrode conductors.
2.03 GROUND RODS
A. All ground rods shall be a minimum of ¾” x 10’-0” copper clad steel unless
otherwise indicated on the Drawings.
3.0
EXECUTION
3.01 INSTALLATION
A. Bonding and grounding conductors shall be sized, shall be run in conduit, and
shall be connected to various services in accordance with the requirements of
the authorities having jurisdiction and the NEC.
B. Provide grounding system for the generator as a separately derived system per
the NEC. See the drawings for more information.
C. Provide exothermic type chemical welded type connectors (Cadweld or
approved equal) for the joining of conductors to ground rods, grounding plates,
external ground bars and splicing. Provide compression and bolted type
connectors for the joining of grounding electrode conductors to the ground
bars.
D. Provide a separate green-insulated equipment grounding conductor, with
insulation of the same rating as the phase conductors, for all feeders and
branch circuits. Install the grounding conductors in the raceway with related
phase and neutral conductors. Where parallel conductors in separate
raceways occur, provide a grounding conductor in each raceway. Connect all
grounding conductors to ground terminals at each end of the run so that there
will be no uninterrupted grounding circuit from the point of ground fault back to
a point of connection of the equipment ground and system neutral.
E. Provide grounding bushings on all raceways terminating within all electrical
enclosures. Provide grounding conductors from such bushings to the frame of
the enclosure, ground bus and equipment grounding strap where one occurs.
F. Assure the electrical continuity of all metallic raceway systems, pulling up all
conduits and/or locknuts wrench-tight. Where expansion joints or telescoping
GROUNDING SYSTEM
16450 - 2
Chemistry Building Generator
Auburn University
Engineer Project No.: 11028
Auburn Project No.: 06-140
joints occur, provide bonding jumpers. Wherever flexible metallic conduit is
employed, provide a green insulated ground jumper installed in the flexible
conduit.
3.02 TESTS
A. Provide ground continuity tests at all panel boards, distribution panels, transfer
switch equipment.
END OF SECTION
GROUNDING SYSTEM
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