Cut Sheet

ManualsBrandsOcal ManualsFittingsPVC CTD LT COND CONN STR 3/4IN LBLU

SECTION 26 05 33

UNDERGROUND DUCTS AND RACEWAYS FOR ELECTRICAL SYSTEMS:

CONDUIT SYSTEMS FOR USE IN CORROSIVE ENVIRONMENTS

PART 1 – GENERAL

1.1 SUMMARY

A. Section Includes: Furnishing, installation, and assembly of PVC coated

electrical rigid metal conduit (ERMC) systems and stainless steel fittings.

B. Related Sections:

1. Section 26 05 29 - Hangers and Supports for Electrical Systems

1.2 REFERENCES

A. National Electrical Manufacturers Association (NEMA):

1. NEMA RN1: Polyvinyl-Chloride (PVC) Externally Coated

Galvanized Rigid Steel Conduit and Intermediate

Metal Conduit.

B. National Fire Protection Association (NFPA):

1. NFPA 70: National Electrical Code (NEC).

C. American Society for Testing and Materials (ASTM):

1. ASTM A 239: Standard Practice for Locating the Thinnest Spot in

a Zinc (Galvanized) Coating on Iron or Steel

Articles

D. Underwriters Laboratories, Inc. (UL):

1. UL 6: Safety Standard for Rigid Metal Conduit

2. UL 514B: Safety Standard for Fittings for Conduit and Outlet

Boxes

E. American National Standards Institute (ANSI):

1. ANSI C80.1: American National Standard for Rigid Steel

Conduit-Zinc Coated

G. Steel Tube Institute of North America:

1. Guidelines for Installing Steel Conduit/Tubing

THOMAS & BETTS GUIDE SPECIFICATIONS 26 05 33 CONDUIT SYSTEMS FOR

CORROSIVE ENVIRONMENTS

Summary of content (5 pages)

PAGE 1
SECTION 26 05 33 UNDERGROUND DUCTS AND RACEWAYS FOR ELECTRICAL SYSTEMS: CONDUIT SYSTEMS FOR USE IN CORROSIVE ENVIRONMENTS PART 1 – GENERAL 1.1 1.2 SUMMARY A. Section Includes: Furnishing, installation, and assembly of PVC coated electrical rigid metal conduit (ERMC) systems and stainless steel fittings. B. Related Sections: 1. Section 26 05 29 - Hangers and Supports for Electrical Systems REFERENCES A. National Electrical Manufacturers Association (NEMA): 1. B.
PAGE 2
1.3 SUBMITTALS A. General: Submit in accordance with Section 01 33 00. B. Product Data: 1. Submit manufacturer’s descriptive literature and product specifications for each product. 2. Manufacturer’s installation literature and training guide. 3. Manufacturer’s product drawings, when applicable. 1.4 QUALITY ASSURANCE A. Manufacturer Qualifications: Products shall be free of defects in material and workmanship. B.
PAGE 3
mils in thickness continuous over the entire length of the conduit except at the threads, and be free of blisters, bubbles or pinholes. PVC shall be UL listed as a primary corrosion protection. A blue urethane coating shall be uniformly and consistently applied to the interior of conduit. This internal coating shall be a nominal 2-mil thickness. All male threads on elbows and nipples shall be protected by this same application of urethane coating. Coated couplings shall be used with coated conduit.
PAGE 4
All female ends of PVC coated conduit fittings shall have a flexible PVC sleeve which extends from the female ends of the fitting and which will overlap the PVC coating on the conduit when the fitting has been installed on the conduit. The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes up through 2”. For sizes 2” – 6”, the length of the sleeve extension(s) shall be at least 2 in. The PVC sleeve shall be a nominal thickness of 40 mils in thickness.
PAGE 5
F. STAINLESS STEEL FITTINGS: Stainless steel Liquid-Tight fittings shall be made of 304-grade stainless steel or better. G. STAINLESS STEEL STRUTS, HANGERS, ETC. Stainless steel strut, beam clamps, pipe straps, clamp back spacers, conduit clamp hangers and all thread rods shall be made of 304-grade stainless steel or better. PART 3 – EXECUTION 3.1 EXAMINATION A. 3.2 PREPARATION A. 3.3 Install in accordance with manufacturer’s printed instructions and manufacturer’s installation training.