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Thomas and Betts Corporation
Product Guide Specification
ELECTRICAL NONMETALLIC TUBING (ENT)
26 05 33.03-1
REVISION 0
Specifier Notes: This product guide specification is written according to the Construction Specifications Institute
(CSI) 3-Part Format, including MasterFormat, SectionFormat, and PageFormat, as described in The Project
Resource Manual—CSI Manual of Practice, Fifth Edition.
This section must be carefully reviewed and edited by the Architect or Engineer to meet the requirements of the
project and local building code. Coordinate this section with other specification sections and the Drawings. Delete
all “Specifier Notes” after editing this section.
Section numbers are from MasterFormat 2010 Update.
SECTION 26 05 33.03
ELECTRICAL NONMETALLIC TUBING (ENT)
Specifier Notes: Delete any information below in Parts 1, 2 or 3 which is not required or relevant for the project.
PART 1 – GENERAL
1.01 SUMMARY
A. This section includes Electrical Non-metallic Tubing (ENT), fittings, boxes and support
hardware. Fitting types for both snap and solvent cement connections with ENT. ENT is a
non-metallic, non-conductive, non-corrosive pliable raceway system.
1.02 REFERENCES
A. Underwriters Laboratories, Inc. (UL):
1. UL 514C Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers
2. UL1479 Fire Tests of Through-Penetration Firestops
3. UL1653 Electrical Nonmetallic Tubing
B. National Fire Protection Association (NFPA):
1. NFPA 70 National Electrical Code (NEC)
C. National Electrical Manufacturers Association (NEMA)
1. NEMA OS-2 Nonmetallic Outlet Boxes, Device Boxes, Covers and Box Supports
2. NEMA TC-13 Electrical Nonmetallic Tubing
D. Canadian Standards Association (CSA):
1. CSA C22.1 Canadian Electrical Code Part I (CEC)
2. CSA C22.2 No. 227.1 Electrical Nonmetallic Tubing
1.03 SUBMITTALS
A. Comply with Section 01 33 00 – Submittal Procedures.
B. Product Data:
1. Submit manufacturer’s descriptive literature and product specifications for each product.
2. Manufacturer’s product drawings.
1.04 QUALITY ASSURANCE
A. Manufacturer Qualifications: Products shall be free of defects in material and workmanship.

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