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16161
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ELECTRICAL GROUNDING
PARTI
GENERAL
1.01 RELATED DOCUMENTS
A.
The general provisions of the contract, including General and Supplementary
Conditions and General
Requirements (if any), apply to th€ work sp€cified in this section.
1.02
DESCRIPTION OF WORK
A.
B.
The rcquirements ol this section apply to the grounding work specifled €lsewhere in these specificalions.
The extent of grounding wor* is indicated on the drawings and by the requiraments of this section.
1.
2.
1.03
Communication and sjgnaling s)€tems grounding.
OUALTYASSURANCE
A.
1.04
Power slstem grounding.
NEC Compliance: Comply with the applicable portions of the National Electrical Code (NFPA No. 70) as
applicable to grounding of main service, branch and feeder circuib, conduit, equipment, separately derived
systems, transformers, etc.
SUBMrTALS
A.
Product Data: Submit manufacturer=s data on wlre, conduit, connectors, rods, accessories and devices
required for a complete and proper building ground system.
r.05
TESTS
A.
Measure ground resistance with earth test megger and install additional ground rods and conductors as
required until resistance to ground complles with Code requirements.
PRODUCTS
PART2
2.O1 GROUNDING SYSTEM
A.
Provid€ building grounding system consisting of 3/4' by 10' copper clad steel dfiven rods with #3/0 insulated
stranded copper interconnecling conductor and connection to water main and to building structural steel,
PART
3.OI
3
EXECUTION
POWER SYSTEM GROUNDING
A.
Main Distribution System: From ground bus main ground eleetrode, provide one copp€r insulated ground
conductor in conduit to ground bus in main seMce panel, to nButral of main panel and to non-cunent carrying
Darts as D€r NEC.
B.
Circult Grounding: Install grounding bushings, grounding studs, and gmunding jumpers at pullboxes, motors
and panelboards.
C,
Bonding Jump€rs: Provido Gresn insulation, sized coffelated with over-cun€ni device protecting the wire,
attrch to grounding bushings on mnduit, to lugs on boxes and other enclosures. Conneclion to neutral only at
service main neutral bar.
16161 -
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OCMAPS Projed No. ES-0047
Thelma R. Parks Elementary School Addition/Renovation, Oklahoma City, OK
Proiect No. N08079
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March 4,2010
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