Specification
Thomas and Betts Corporation 
Product Guide Specification 
ELECTRICAL NONMETALLIC TUBING (ENT) 
26 05 33.03-3 
REVISION 0 
16.  ENT Raceway shall be recognized for Through-Penetration Firestop systems as classified by 
UL to meet ICC building codes. 
17.  ENT Raceway shall meet BOCA, SBCCI, and ICBO codes for 3 hour Fire rated Floor/ceiling 
assembly. 
18.  ENT Raceway shall be recognized for use with PVC rigid nonmetallic conduit fittings. 
19.  ENT Raceway shall be rated for 90°C conductors US, and 75°C Canada. 
20.  Conductors shall easily push through the raceway (up to approximately 50 feet). 
21.  Outside Diameters of raceway shall meet IPS Dimensions 
22.  ENT Raceway shall be available in sticks, coils and reels. 
  B.  Fittings 
  1.  Fittings used withed ENT shall be listed and/or certified. 
  2.  One piece ENT Coupling, Threaded Terminator and RNC Transition Fittings shall be rated  
    concrete tight without tape. 
  3.  Vertical and 45º Stub Downs shall be made available in 1/2” through 1” trade sizes. (Molded  
    part to retain ENT for concrete pour and provides clearance for attaching fittings to ENT). 
4.  Vertical and 90º Stub Down Transition Adapter shall be made available in 1/2” through 1”  
trade sizes (Molded part to retain ENT for concrete pour and provides threaded port for 
transitioning to other conduit systems). 
5.  Quick Connect Couplings shall be available in 1/2”-1” trade sizes (Molded part which allows  
two pieces of ENT to be quickly coupled). 
6.  Quick Connect Male Threaded Adapter shall be available in 1/2”-1” trade sizes (Molded part 
which snaps onto a piece of ENT to allow it to have a male threaded end). 
7.  Quick Connect Male Snap-in Adapters shall be available in 1/2”-1” trade sizes (Molded part 
which snaps onto a piece of ENT to allow it to connect to an outlet or switch box). 
8.  Schedule 40 Male Terminal Adapter shall be available (Molded fitting which is solvent 
cemented to a piece of ENT to provide a male threaded end). 
9.  Schedule 40 Nonmetallic Couplings shall be available (Molded part which allows two pieces 
of ENT to be connected together with solvent cement). 
10.  Non-Metallic ENT Transition Adapters shall be available 
a.   Male ENT to schedule 40 & 80 PVC Conduit  
    b.   ENT to EMT 
c.   Reducers, ¾” to ½” ENT and 1” to ¾” ENT 
C.  Boxes  
  1.  Boxes used withed ENT shall be listed and/or certified. 
2.  Non-metallic Mud Boxes shall be available. 
    a.     Mud Boxes with two 1”, four ½” and six ¾” ports shall be available 
    b.   Mud Boxes with quick connect ports shall be molded out of Polycarbonate 
    c.   Mud Boxes with removable back shall be available 
d.   Mud Box types shall include; 
1)   Ceiling Box listed for fixture support up to 50 lbs. and ceiling fan support up 
to 35 lbs 
2)  One Gang 
3)  Two Gang 
4)  4 Square 
    3.  Non-Metallic Outlet and Switch Box shall be available in Single and Two Gang 
    a.   Boxes shall have eccentric knockouts 
b.   Two gang shall have dual voltage capability 
c.   Optional dual voltage divider shall be available 
    4.  Non-Metallic Box Extenders shall be available. 
    5.  Non-Metallic Plaster Rings shall be available.       
    6.  Non-Metallic Blank Covers shall be available. 
    7.  Non-Metallic 4” Octagon Ceiling Boxes shall be available  




