SECTION 16112 CONDUIT FITTINGS

This spec was part of the Des Plaines, IL River WRF project that bid Feb 26, 2015.


SECTION 16112 CONDUIT FITTINGS


PART 1 GENERAL

1.1 RELATED REQUIREMENTS

A. Applicable requirements of Division 0 and Division 1 shall govern work in this Section.

1.2 SCOPE

A. Provide conduit fittings to form a complete raceway system as specified herein.

1.3 QUALITY ASSURANCE

A. Reference National Electrical Contractors Association (NECA) - Standard of Installation


PART 2 PRODUCTS

2.1 MATERIAL

A. Fittings shall be steel or malleable iron and shall be zinc galvanized, or cadmium plated.

B. Fittings shall be aluminum or die cast if used with aluminum conduit.

C. Do not use running threads.

D. Do not use set screw or indentor type fittings.

2.2 CONNECTORS AND COUPLINGS

A. Galvanized Rigid Conduit
1. Threaded.
2. Liquid tight.
3. Insulated throat.

B. Polyvinyl Chloride (PVC)
1. Schedule 40 or 80, to match conduit.

C. PVC Coated Galvanized Rigid Conduit
1. Full weight 40 mil PVC jacket.
2. PVC gasketed for mating surfaces.
3. Same as for Rigid Conduit.


D. Rigid Aluminum Conduit

1. Threaded
2. Liquid tight.

E. Liquidtight Flexible Metal Conduit
1. Liquid tight.
2. Suitable for grounding.
3. Suitable for wet locations.
4. Tapered threaded hub.
5. Non-metallic materials.

F. Flexible Metal Conduit
1. Threaded.
2. Grounding type.
3. Insulated throat.
4. Two screw clamp type with locknuts.
5. Externally Secured.

2.3 EXPANSION FITTINGS

A. Expansion fittings:  Copper bonding jumper, Crouse Hinds Type XJ.

B. Expansion/deflection fittings:  Copper bonding jumper, Crouse-Hinds Type XD.

2.4 CONDUIT BODIES

A. Galvanized or cadmium plated.

B. Threaded hubs.

C. Removable cover, with gasket.

D. Corrosion-resistant screws.

2.5 SEALS

A. Wall entrance seals. Link Seal type as manufactured by Thunderline Corporation.

B. Explosion-proof seals.  Appleton type EYS, SFM, or equal.


PART 3 EXECUTION

3.1 INSTALLATION

A. Install electrical fittings in accordance with the manufacturer's written instructions and with recognized industry practices to ensure that fittings serve intended purposes.

B. Rigidly secure connectors at cabinets and boxes with galvanized lock nut and bushing. Use appropriate connectors on NEMA 3R (weatherproof) and NEMA 4 (spray-tight) enclosures to maintain their ratings.  NOTE: Conduit penetrations to NEMA 3R and

NEMA 4 enclosures shall be made on the bottom (or the sides, if the bottom access is insufficient) – do not penetrate the top of the enclosure.

C. Seal conduits that run through different temperature or atmospheric conditions to prevent moisture or gases from entering electrical equipment and devices.

D. Install wall entrance seal where conduits or direct burial conductors pass through foundation walls below grade.

E. Install conduit expansion fittings complete with bonding jumper in following locations:
1. Conduit runs which cross a structural expansion joint.
2. Conduit runs where movement perpendicular to axis of conduit may be encountered.

F. Locate conduit bodies so as to assure accessibility of electrical wiring.

G. Install fittings designed for use with flexible liquid-tight conduit to ensure continuity of ground throughout the fittings and conduit and prevent entrance of moisture.




END OF SECTION