SECTION 16040

BONDING & GROUNDING

PART 1 GENERAL

1.1	SUMMARY

A.	Includes But Not Limited To

1.	Furnish and install necessary conduit, conductors, clamps, and connectors for complete grounding system as described in Contract Documents.

B.	Related Sections

1.	Section 16020 - Basic Electrical Materials and Methods

1.2	QUALITY ASSURANCE

A.	Perform work in approved manner as prescribed and required by all applicable codes.

B.	Grounding methods and work shall conform to all provisions in Article 250 of the National Electrical Code and any other State and Local requirements and as shown on the plans.

PART 2 PRODUCTS

2.1 COMPONENTS

A.	Size material as shown on Drawings and in accordance with applicable codes.

B.	Grounding conductors and bonding jumper conductors shall be copper with green insulation and be continuous from terminal to terminal without splice.

C.	All service grounding connections and cable splices shall be made by exothermic process, Erico Products Inc., "Cadweld" or Burndy "Thermoweld"; or "Burndy" U.L. approved compression type. All ground/bond connections to steel building framing or reinforcement steel will be by the exothermic process.

D.	Provide grounding bushings on all feeder conduit entrances into panelboards and equipment enclosures.

2.2	APPROVED MANUFACTURERS

A.	Burndy, Norwalk, CT 06856 (203) 838-4444

B.	Erico Products Inc., 34600 Solon Rd, Cleveland, OH 44139 (216) 248-0100, FAX (800) 462-4797

PART 3 EXECUTION

3.1	INSTALLATION

A.	Identified common conductor of electrical system shall be grounded at secondary side of main transformer supplying building.

B.	Identified grounded (neutral) conductor of electrical system shall be grounded on supply side of main service disconnecting means.

C.	Grounding connection to main water supply shall be accessible for inspection and made within 6" (150 mm) of point of entrance of water line to building or ahead of dielectric, if used, on meter side.

D.	Provide concrete-encased electrode system by embedding 75'-0" minimum of #250 MCM bare copper conductor in concrete footing, 2" from bottom also bonded to re-bar infooting. Extend #250 MCM copper conductor to main panel as shown on Drawings. Provide additional driven, coperweld ground rods as indicated on the drawings to receive a 25 ohm ground.

E.	Install bonding jumpers across valves or service unions on water piping system to insure continuous ground connection at all times.

F.	Bond conduit grounding bushings to enclosures with minimum #8 AWG solid copper conductor.

G.	Connect equipment grounds to building system ground.

1.	Use same size equipment grounding conductors as phase conductors up through #10 AWG.

2.	Use NEC Table 250-95 for others unless noted otherwise in Drawings.

H.	On motors, connect ground conductors to conduit with approved grounding bushing and to metal frame with bolted solderless lug.

I.	All raceway shall have grounding conductors installed to insure continuous and permanent grounding condition.

J.	Ground cabinet of transformers to conduit and ground wires if installed. Bond transformer secondary neutral conductor to cabinet.

END OF SECTION