Specifications

Draper Prison Wasatch & Oquirrh Intercom & Paging System Remodel 4-21-2014
GROUNDING 260452 – 2
A. Provide exothermic welds. (Cadweld or equivalent)
2.6 BONDING JUMPERS:
A. Provide bonding jumpers with hot dip galvanized malleable or ductile iron clamps, hot dip
galvanized steel U-bolts, and tinned copper braids (OZ Gedney BJ Series or equivalent).
2.7 GROUND BUS:
A. Provide 1/4" x 4", copper ground bus complete with insulators and brackets in lengths and at
mounting heights as indicated on drawings. Furnish complete with drilled holes and lugs to
accommodate grounding conductors.
PART 3 – EXECUTION
3.1 GENERAL:
A. Install grounding systems in accordance with manufacturer's written instructions, applicable
requirements of NEC, NEMA standards, and NECA's "Standards of Installation", and in
compliance with recognized industry practices to ensure that products fulfill requirements.
3.2 CLEANING:
A. Thoroughly clean all metal contact surfaces prior to installation of clamp-on connectors.
3.3 EQUIPMENT BONDING AND GROUNDING:
A. Provide an NEC sized conductor, whether indicated or not on the drawings, in raceways as
follows:
1. Non-metallic conduits and ducts (existing – if any)
2. Device branch circuits.
3.4 ADDITIONAL GROUNDING INSTALLATION REQUIREMENTS:
A. Provide grounding bushings on all service conduit and conduits installed in concentric/eccentric
knock-outs or reducing washer at panelboards, cabinets, and gutters.
B. Provide bonding jumpers across expansion and deflection couplings in conduit runs.
C. Provide bonding wire in all flexible conduits.
END OF SECTION 260452
Bid DA14027DFCM
5/30/2014 2:08 PM p. 90