W e NE r th EC pe 2 N ‘0 Carlon Electrical Nonmetallic Tubing (ENT) Application Handbook ®
© Carlon 2002. All rights reserved. The cover and entire contents of this handbook are fully protected and may not be reproduced in any manner without the expressed written consent of Carlon.
Introduction This pocket handbook is intended to be used as a guide for the installer of the Carlon brand of Electrical Nonmetallic Tubing (ENT) to answer general questions relating to installation procedures. For information on part numbers or pricing, please refer to to the appropriate Carlon catalog. Should the installer develop any unique installation or support methods not shown in this manual, please photograph the method with a 35mm camera only and contact your local Carlon sales representative.
Section 1 General Information and Questions about Carlon Flex-Plus Blue™ ENT ® ® Features: • UL Listed • CSA Certified • Lightweight • Nonconductive • Color-coded • Hand bendable (pliable), no sharp edges • Clean • Available in long-length coils and reels to reduce scrap • Available in 1/2 inch through 2 inch sizes • Available with a complete line of fittings and accessories that are compatible with PLUS 40®, PLUS 80® PVC Conduit and Schedule 40 fittings • Easy to work with, no special tools required • S
Questions about ENT 1. WHAT IS ENT? ENT is a pliable, nonmetallic raceway manufactured of the same material (PVC) used for rigid nonmetallic conduit. 2. IS ENT UL LISTED? Yes. See UL Listing No. E73317 for 1/2 inch through 2 inch ENT 3. IS ENT RECOGNIZED BY THE NEC? Yes. See Article 362 (Article 331 of the NEC) – Electrical Nonmetallic Tubing (see Section 10 of this manual.) 4. ARE THERE ANY OTHER NATIONAL ORGANIZATIONS THAT RECOGNIZE THE USE OF ENT? Yes.
construction and contents of a building such as furniture, wall coverings, carpeting, drapes, wood, and paper. Wool carpeting and upholstery produce deadly hydrogen cyanide gas. Wood produces carbon monoxide, a primary cause of fire deaths. These materials ignite at a much lower temperature than ENT. c.
Let’s look at the sizes: • A 200 foot coil of ENT is 22" 22" square 81/2" deep. • A 200 foot bundle of EMT is 10' long by approximately 20" in circumference. Now how easy is it for one man to carry 200 feet of EMT conduit and negotiate stairways and hallways? Try this same experiment with Carlon ENT. It’s much easier isn’t it? 9.
One Piece Quick Connect fitting Schedule 40 Male Threaded Adapter 11. WHAT KIND OF ENT FITTINGS DOES CARLON OFFER? Carlon offers a complete line of one piece quick connect fittings in sizes 1/2 inch through 1 inch. For ENT sizes 11/4 inch through 2 inch, the use of PVC Schedule 40 cemented fittings is necessary. Carlon also offers PVC cemented fittings for 1/2 inch through 1 inch. 12. HOW EASY IS IT TO PULL WIRE THROUGH ENT? Very easy! In fact, a field test showed that it required only 1.
14. WHERE CAN I USE ENT? ENT can be used in place of EMT, Rigid Galvanized Steel, AC or MC/ cable and NM cable. Just refer to Section 362.10 of NEC (see Section 10 of this manual.) ENT can be used in residential, commercial, schools, condominiums, apartments and industrial applications. On Deck Installation – Commercial Metal Stud Installation – School Wood Stud Installation – Condominium 7 w w w. c a r l o n .
On Deck Installation – Hospital 15. WHAT IF I HAVE ANY QUESTIONS THAT WERE NOT COVERED IN THIS MANUAL? • Just call Carlon at (216) 766-6532 or 1-800-321-1970 (outside of Ohio) or contact your local Carlon sales representative. • Visit our website at www.carlon.com. w w w. c a r l o n .
Section 2 Embedded ENT REFERENCE NEC SECTION 362.10 USES PERMITTED: The use of Carlon Electrical Nonmetallic Tubing and fittings shall be permitted: (6) Encased in poured concrete, or embedded in a concrete slab on grade where ENT is placed on sand or approved screenings, provided fittings identified for this purpose are used for connections. REFERENCE NEC SECTION 362.10 USES NOT PERMITTED: Electrical nonmetallic tubing shall not be used: (5) For direct earth burial. 1.
2. Ideally, one continuous length of ENT should be installed from box-to-box, but if the long lengths are not available, the run can be made using shorter lengths coupled together. 3. Carlon ENT is a pliable raceway that is not designed for flexible use in final connections to motors, A.C. units or other machinery where a flexible connection is necessary. In such instances, use Carlon® Carflex® Liquidtight Flexible Nonmetallic Conduit (ref. NEC Article 356) (see Section 10 of this manual.) 4.
Questions About ENT 1. WHAT ABOUT STUB UPS OF ENT? First, read your job specifications for any particular requirements. Then refer to Carlon suggested stub up methods shown in this section. 2. WHAT FITTINGS DO I USE WHEN INSTALLING 1/2 INCH THROUGH 1 INCH ENT IN CONCRETE? Carlon offers a complete line of one piece quick connect fittings. These fittings are suitable for damp locations and are concrete-tight when used with Carlon ENT and a flat sealing washer on the box connection end.
Stub Down into Box ENT in a Floor Slab prepared for more form work to extend conduits in the next pour. ENT and Rigid PVC Conduit Stub Ups prepared for the pour Stub Down Using Carlon’s PV Mold w w w. c a r l o n .
Fabricated ENT deck stub down 1/2" or 3/4" ENT Form board Foam sleeve Foam bushing Initial installation before form is Stripped Carlon ENT ENT One-piece coupling After Stripping ENT Stub Down (Illustration 2-1) Carlon Carflex® flexible extension for equipment connection Box shall be securely mounted to equipment Carlon Sch 40 or Sch 80 conduit length Glue Sch 40 coupling to ENT using Carlon ENT cement Finished floor Carflex connector Carlon FS or FD box Prior to pouring plug coupling to prevent entr
Wood stud Steel stud Carlon ENT Tape or tie-wrap conduits together Wood or steel base plate is installed after ENT is installed Rebar Tie-wrap ENT to rebar to prevent floating Stub Up in Walls (Illustration 2-3) Carlon E971FB floor box Temporary cap Carlon ENT Metal deck Plug and glue unused opening Stub Into Single Circuit Floor Box (Illustration 2-4) 1/4" or 3/8" plain rods drive into ground to support template 3" - 4" above top of pour 1/4" or 3/8" plywood Caddy push nuts (2 per rod) Tape E
1/2" ENT 1" ENT Tape top of ENT sleeve prior to pour to prevent entry of concrete. Sleeve can be left as long as needed or cut flush with finished floor Finished floor Use a larger piece of ENT for a sleeve. Push the smaller piece of ENT through, bend and install assembly Rebar Into slab Tie wrap Metal deck Stub Up with ENT Sleeve (Illustration 2-6) After installation of sleeve and ENT, space between ENT and the sleeve can be troweled or foamed with fireproofing compound.
Grade ENT permitted in wet locations, including concrete below grade, provided fittings identified for the purpose are used. ENT in Wet Conditions (Illustration 2-9) w w w. c a r l o n .
Section 3 Wood and Metal Stud Construction Reference NEC Section 362.10 Uses Permitted: The use of electrical nonmetallic tubing and fittings shall be permitted: (2) In any building exceeding three floors above grade, ENT shall be concealed within walls, floors, and ceilings where the walls, floors, and ceilings provide a thermal barrier of material that has at least a 15 minute finish rating as identified in listings of fire-rated assemblies. (see Section 3, Table 3-1 in this manual.
Questions about ENT 1. WHAT IS THE FINISH RATING WHERE ENT IS INSTALLED? As previously stated in this manual, when ENT is run through studs and the wall, construction provides at least a 15 minute finish rating by using materials shown in the following chart. FINISH RATINGS OF WALLS Material Fireboard, 1/2" thick with 1/2" 112,112 Gypsum sand plaster Gypsum wallboard, 1/2" thick Gypsum wallboard, 5/8" thick Laminated wallboard, 3/8", 1/2" and 5/8" thick Finish Rating Min.
For 1 inch through 2 inch ENT, it should not be installed in a 2 4 inch studded wall since it will not meet minimum code requirements. Our suggestion is that 1 inch through 2 inch ENT be installed in a 2 6 inch studded wall only. This can be drilled in the center of a 2 6 inch stud. 4. IS THERE A CONCERN WITH THE INSTALLATION OF ENT PARALLEL TO STUDS OR JOISTS? WHAT IS THE SUPPORT SPACING? a. No.
8. WHAT IF I NEED TO RUN THROUGH THE STEEL STUD AND THERE ARE NO HOLES? Carlon suggests purchasing a stud punch and put the holes where you need them. 9. WHAT IF A BUILDING THAT IS SEVEN FLOORS HIGH REQUIRES THE USE OF ENT, BUT THE NEC SAYS IT SHALL NOT EXCEED THREE FLOORS ABOVE GRADE? Section 362.10(1) covers exposed work only. “On or attached to the surface...” There is a three floor limit for exposed work. Section 362.10(2) covers concealed work. “Concealed within walls, floors and ceilings...
3 1/2" Edge of bored hole not less than 1 1/4" from nearest edge of stud ENT 1 1/4" If hole is less than 1 1/4" from nearest edge, a steel plate 1/16" thick must be used to protect ENT against driven nails or screws. ...or... Less than 1 1/4" ENT Holes through Wood Studs Ref. NEC Section 300.4(A) (Illustration 3-1) Edge of notched hole not less than 1 1/4" from nearest edge of stud 3 1/2" 1 1/4" 1/16" steel plate ENT Notches in Wood Stud Section 300.4(A). Clearance for ENT through wood studs.
13. CAN ENT BE “PRE-WIRED” PRIOR TO INSTALLATION? Yes, per Section 300.18(A) and 362.10(8), 1/2 inch through 1 inch ENT, as a listed manufactured pre-wired assembly, is now recognized by the NEC as an acceptable wiring method. Pre-wired ENT is required to be assembled by the listed manufacturer and cannot be field assembled. A special cutting tool is required to be used to prevent damage to the conductors during the cutting of the assembly. 14.
Section 4 Masonry Construction Reference NEC Section 362.10 Uses Permitted: The use of electrical nonmetallic tubing and fittings shall be permitted: (1) In any building not exceeding three floors above grade a. For exposed work, where not prohibited by 362.12(10) b. Concealed within walls, floors, and ceilings.
the ceiling, thus causing the mason to wait while the electrician completes each conduit extension. b. Installing a box with 4 - 5 feet length of rigid conduit then returning when the mason is up to the height of the conduit with another piece of rigid conduit with a coupling to attach, then again returning before the last course is installed to install the 90˚ elbow. Working with other trades is easier when using ENT rather than coming back at least twice to finish your work. 3.
Section 5 Exposed Construction Reference NEC Section 362.10: The use of electrical nonmetallic tubing and fittings shall be permitted: (1) In any building not exceeding three floors above grade. a. For exposed work, where not prohibited by 362.12(10). b. Concealed within walls, floors, and ceilings.
5. CAN I USE ENT IN A CABLE TRAY? Yes (see NEC Section 392.3(A), Section 10 of this manual.) 6. I WILL BE LIGHTING A LOADING DOCK OVERHEAD. CAN I USE ENT TO CONNECT THE OVERHEAD LIGHTS EXPOSED IN THE CANOPY? Yes. This is considered a partially protected damp location (refer to NEC Article 100 – Location.) 7. CAN I USE ENT TO CONNECT ITEMS IN HAZARDOUS LOCATIONS? Yes. But it is limited to intrinsically safe systems (see NEC Section 504.20 and 505.15). 8.
ENT Remote ballast ENT Hi bay fixture-bracket MTD Bottom of truss Exposed ENT Industrial Application (Illustration 5-1) Tie-wrap support (TYP) Hi bay fixture Hi bay fixture Carlon box ENT run in web Carlon box Exposed ENT Industrial Application (Illustration 5-2) Clamp or other support must be within 3' of any box, cabinet or other conduit MAX 3' termination ENT Threaded adapter Carlon box MAX spacing 3' Support Spacing for ENT Ref. NEC Section 362.30.
Section 6 Above a suspended ceiling Reference NEC Section 362.10(5) Permitted Uses: (5) Above suspended ceilings where the suspended ceilings provide a thermal barrier of material that has at least a 15 minute finish rating as identified in listings of fire-rated assemblies, except as permitted in Section 362.10(1)(a).
5. WHAT IF I AM RUNNING ENT, THEN FIND I MUST RUN THROUGH AN AIR-HANDLING SPACE? You run the ENT to a point before entering the air-handling plenum, change to metal conduit, run through the air-handling space with the metal conduit, and change to ENT for the balance of the run (see NEC Section 300.22 (A) through (D).
No ENT or PVC can be installed in an air-handling plenum See Sections 300.22(A)(B)(C) EMT Steel flex Warm-air return duct in plenum Warm-air return through fixtures to plenum Cool air supply Air Handling Plenum (Illustration 6-1) ENT may be used as fixture flex tails above a ceiling only where that space is not used for air handling or environmental air Box Carlon ENT Non-air handling space MAX - 6' length of 1/2" ENT with No.
Section 7 Boxes and Supports Reference NEC Article 314 Outlet, Device, Pull and Junction Boxes, Conduit Bodies, Fittings, and Manholes. 314.1. Scope. This article covers the installation and use of all boxes and conduit bodies used as outlet, junction, or pull boxes, depending on their use, and manholes and other electric enclosures intended for personnel entry. Cast, sheet metal, nonmetallic, and other boxes such as FS, FD, and larger boxes are not classified as conduit bodies.
can be used in place of the insulation to achieve a zero separation without being back to back. c. Openings around electrical penetrations through fireresistive walls, penetrations...shall be fire stopped using approved methods to maintain the fire-resistive rating. d. The total surface area of the Carlon boxes in walls or ceilings on one side of the fire-resistive assembly cannot exceed 100 square inches for any 100 square feet of wall or ceiling area. 3.
Cubic Inch Capacity of Carlon Boxes Box Size Cubic Inches Per Box 2 1/2" Deep Mud Box ( 1/2" KO’s) 2 1/2" Deep Mud Box ( 3/4" KO’s) 4" Deep Mud Box (1/2" KO’s) 4" Deep Mud Box (3/4" KO’s) 4" Deep Mud Box (1" KO’s) 6" Deep Mud Box 1 Gang Switch Box 11/2" D 2 Gang Switch Box 11/2" D 2 Gang Switch Box 23/8" D 1 Gang Plaster Ring 1/2" Rise 1 Gang Plaster Ring 5/8" Rise 1 Gang Plaster Ring 3/4" Rise 1 Gang Plaster Ring 1" Rise 1 Gang Plaster Ring 11/4" Rise 2 Gang Plaster Ring 1/2" Rise 2 Gang Plaster Ring 5/8
ENT terminated on a Switch Box ready for a poured concrete wall. (This is a Tunnel Form Method). Tunnel Forming project Carlon ENT terminated in metal* boxes roughed-in for a poured concrete wall Carlon ENT roughed-in a deck (between layers of rebar) ready for a concrete pour (tunnel form). ENT extended from stub down in wall and terminated in a Carlon Switch Box with a metal* box extension. * Refer to NEC Article 250 for grounding requirements of steel boxes.
Section 8 Field Expediency and Tips Use an inexpensive shelf bracket nailed to the plywood deck to support ENT stub ups. This installation is not in accordance with Article 300 of the NEC because ENT must be 1 1/4" from edge of stud, see NEC Section 300.4 (D), Section 10 of manual. Truck set up with reel stands for the payout of ENT on job site. 35 w w w. c a r l o n .
Reel set up on a floor to payout ENT for convenience of the installer. NOTE: Remember to always payout ENT as it lays an the reel for ease of installation. Save more time! After roughing in for two rooms to determine the best ENT routing. Pre-fab your short runs complete with the boxes, tie them together, identify them and take them to the site when you are ready for installation. Pre-fab longer runs complete with stub ups to be placed in concrete. w w w. c a r l o n .
Remodeling: Run ENT in floors and walls with a minimum disruption of existing building while completing the job with minimum expense. An outlet can be added after the wall is poured. Channel the wall, install ENT and the box, furr out and finish. Because ENT is pliable, it will follow the contour of the channel. 37 w w w. c a r l o n .
Carlon Box Drywall box-out around conduit ENT ENT installed in accordance with classified through firestop penetration system, if floor is fire-rated. 5th Floor Carlon Box Drywall box-out around conduit ENT 4th Floor 3rd Floor To Make Exposed ENT Concealed Above The 3rd Floor (Illustration 8-1) All ENT must have a ground conductor run with circuit conductor. Ref. NEC Article 250 ENT tubing with ground wire Metal junction box ENT Term Adapter ENT NOTE: All metal boxes must be grounded. Ref.
Can Be Used For Home Runs Built in adapter (2) - 1/2" & 1 3/4" Two Gang 4" x 4" x 1 3/4" A5329DE w/ 1/2" & 3/4" K.O.’s ENT Box with Adapters (Illustration 8-3) Snap-in Box Back Support can be cut to length with sidecutters Box Back Wall Support (Illustration 8-4) 39 w w w. c a r l o n .
Section 9 Tables, Charts, Etc. Tubing & Conduit Data Comparisons Table 9-1 Flex Plus Blue™ ENT ® Size O.D. I.D. WT/FT 1/2 .840 .560 .11 3/4 1.050 .760 .14 1 1.315 1.00 .22 1 1/4 1.660 1.402 .19 1 1/2 1.900 1.554 .27 2 2.375 2.030 .32 Table 9-2 SCHEDULE 40 RIGID PVC CONDUIT Size O.D. I.D. WT/FT 1/2 .840 .622 .18 3/4 1.050 .824 .23 1 1.315 1.049 .35 1 1/4 1.660 1.380 .48 1 1/2 1.900 1.610 .57 2 2.375 2.067 .
Tubing & Conduit Data Comparisons Table 9-4 EMT (Electrical Metallic Tubing) Size O.D. I.D. WT/FT 1/2 .706 .666 .29 3/4 .922 .876 .44 1 1.163 1.109 .64 1 1/4 1.510 1.449 .95 1 1/2 1.740 1.679 1.10 2 2.197 2.130 1.40 Table 9-5 RIGID GALV. CONDUIT Size O.D. I.D. WT/FT 1/2 .840 .662 .85 3/4 1.050 .824 1.13 1 1.315 1.049 1.65 1 1/4 1.660 1.380 2.28 1 1/2 1.900 1.610 2.73 2 2.375 2.067 3.63 41 w w w. c a r l o n .
Center-To-Center Spacing For ENT in Boxes or Templates Table 9-6 ENT TUBING SPACINGS ENT Size 1/2 3/4 1 1 1/4 1 1/2 2 1/2 3/4 1 1 1/4 1 1/2 2 1 3/16 1 3/8 1 5/16 1 1/2 1 1/2 1 3/4 1 3/4 2 1 15/16 2 1/8 2 3/16 2 3/8 1 7/16 1 5/8 1 5/8 1 7/8 1 7/8 2 1/8 2 1/16 2 1/4 2 5/16 2 1/2 1 3/4 2 2 2 1/4 2 3/16 2 3/8 2 1/2 2 3/4 2 1/4 2 1/2 2 7/16 2 5/8 2 3/4 3 2 9/16 2 3/4 2 7/8 3 1/4 3 1/8 3 3/8 Light figures for each size ENT are minimum spacing in inches.
Minimum Number of Conductors in Conduit or Tubing Table 9-7 Type THHN, THWN, THWN-2 FEP, FEPB PFA, PFAH, TFE PFA, PFAH, TFE PFA, PFAH, TFE, Z Z XHH, XHHW, ZHHW-2, ZW Conductor Size (AWG/kcmil) 1/2 3/4 ENT Trade Size (in.
Minimum Size Equipment Grounding Conductors for Grounding Raceway & Equipment Table 9-8 Size Rating or setting of automatic overcurrent device in circuit ahead of equipment conduit, etc., not exceeding (amperes) Copper Wire No. Aluminum or Copper-Clad Aluminum Wire No.
PVC Chemicals Resistance chart Table 9-9 ACIDS Acetic, 10% Acetic, glacial Benzene sulfonic Benzonic Boric Butyric Chloroacetic Chromic, 10% Chromic, 50% Citric Fatty Acids (C6 & up) Fluosilicic Formic Hydrobromic Hydrochloric Hydrocyanic Hydrofluoric Hypochlorous Lactic Maleic Nitric, 5% Nitric, 20% Nitric, 40% Oleic Oxalic Perchloric Phosphoric Picric Stearic Sulfuric, 50% Sulfuric, 70% Sulfuric, 93% Oleum Mixed Acids, 28% HNO3 55% H2SO4 ALKALIES Ammonium hydroxide Calcium hydroxide Potassium hydroxide So
Section 10 Article 362 and Associated Articles Note: All references to the National Electrical Code are based on the 2002 edition. Article 362 – Electrical Nonmetallic Tubing: Type ENT I. GENERAL 362.1 Scope. This article covers the use, installation, and construction specifications for electrical nonmetallic tubing (ENT) and associated fittings. 362.2 Definition. Electrical Nonmetallic Tubing (ENT).
Exception: Where a fire sprinkler system(s) is installed in accordance with NFPA 13-1999, Standard for the Installation of Sprinkler Systems, on all floors, ENT is permitted to be used within walls, floors, and ceilings, exposed or concealed, in buildings exceeding three floors above grade. FPN: A finish rating is established for assemblies containing combustible (wood) supports.
362.12 Uses Not Permitted. ENT shall not be used in the following: (1) In hazardous (classified) locations, except as permitted by 504.20 and 505.
362.26 Bends – Number in One Run. There shall not be more than the equivalent of four quarter bends (360 degrees total) between pull points, for example, conduit bodies and boxes. 362.28 Trimming. All cut ends shall be trimmed inside and outside to remove rough edges. 362.30 Securing and Supporting. ENT shall be installed as a complete system as provided in Article 300 and shall be securely fastened in place and supported in accordance with 362.30(A) and (B).
300.4 Protection Against Physical Damage. Where subject to physical damage, conductors shall be adequately protected. (A) Cables and Raceways Through Wood Members. (1) Bored Holes. In both exposed and concealed locations, where a cable or raceway-type wiring method is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than 32 mm (11⁄4 in.) from the nearest edge of the wood member.
(2) Nonmetallic-Sheathed Cable and Electrical Nonmetallic Tubing. Where nails or screws are likely to penetrate nonmetallic-sheathed cable or electrical nonmetallic tubing, a steel sleeve, steel plate, or steel clip not less than 1.6 mm (1⁄16 in.) in thickness shall be used to protect the cable or tubing. (C) Cables Through Spaces Behind Panels Designed to Allow Access.
Exception: Steel plates, sleeves, or the equivalent shall not be required to protect rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or electrical metallic tubing. (F) Insulated Fittings.
shall be installed complete between outlet, junction, or splicing points prior to the installation of conductors. Where required to facilitate the installation of utilization equipment, the raceway shall be permitted to be initially installed without a terminating connection at the equipment. Prewired raceway assemblies shall be permitted only where specifically permitted in this Code for the applicable wiring method. 300.19 Supporting Conductors in Vertical Raceways. (A) Spacing Intervals – Maximum.
(B) Support Methods. One of the following methods of support shall be used. (1) By clamping devices constructed of or employing insulating wedges inserted in the ends of the raceways. Where clamping of insulation does not adequately support the cable, the conductor also shall be clamped.
The provisions of this section apply to the installation and uses of electrical wiring and equipment in ducts, plenums, and other air-handling spaces. FPN: See Article 424, Part Y1 for Duct Heaters. (A) Ducts for Dust, Loose Stock, or Vapor Removal. No wiring systems of any type shall be installed in ducts used to transport dust, loose stock, or flammable vapors.
Exception: This section shall not apply to the joist or stud spaces of dwelling units where the wiring passes through such spaces perpendicular to the long dimension of such spaces. (1) Wiring Methods.
(2) A smooth inner surface with integral reinforcement within the conduit wall, designated as Type LFNC-B (3) A corrugated internal and external surface without integral reinforcement within the conduit wall, designated as Type LFNC-C LFNC is flame resistant and, with fittings, is approved for the installation of electrical conductors. FPN: FNMC is an alternative designation for LFNC. 356.10 Uses Permitted.
Article 314 — Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Manholes I. SCOPE AND GENERAL 314.1 Scope. This article covers the installation and use of all boxes and conduit bodies used as outlet, device, junction, or pull boxes, depending on their use, and manholes and other electric enclosures intended for personnel entry. Cast, sheet metal, nonmetallic, and other boxes such as FS, FD, and larger boxes are not classified as conduit bodies.
inside the box and beyond any cable clamps. Except as provided in 300.15(C), the wiring shall be firmly secured to the box or conduit body. Where raceway or cable is installed with metal boxes or conduit bodies, the raceway or cable shall be secured to such boxes and conduit bodies. (C) Nonmetallic Boxes and Conduit Bodies. Nonmetallic Boxes and Conduit Bodies shall be suitable for the lowest temperature-rated conductor entering the box.
314.21 Repairing Plaster and Drywall or Plaster-board. Plaster, drywall, or plasterboard surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than 3 mm (1⁄ 8 in.) at the edge of the box or fitting. 314.22 Exposed Surface Extensions. Surface extensions from a flush-mounted box shall be made by mounting and mechanically securing an extension ring over the flush box. Equipment grounding and bonding shall be in accordance with Article 250.
(C) Mounting in Finished Surfaces. An enclosure mounted in a finished surface shall be rigidly secured thereto by clamps, anchors, or fittings identified for the application. (D) Suspended Ceilings. An enclosure mounted to structural or supporting elements of a suspended ceiling shall be not more than 1650 cm3 (100 in.3) in size and shall be securely fastened in place in accordance with either (D)(1) or (D)(2). (1) Framing Members.
than the largest trade size of the conduit or electrical metallic tubing. (F) Raceway Supported Enclosures, with Devices, Luminaires (Fixtures), or Lampholders. An enclosure that contains a device(s) or supports a luminaire(s) [fixture(s)], lampholder, or other equipment and is supported by entering raceways shall not exceed 1650 cm3 (100 in.3) in size. It shall have threaded entries or have hubs identified for the purpose.
(f) At the luminaire (fixture) or lampholder end, the conduit(s) is threaded wrench-tight into the box, conduit body, or integral wiring enclosure, or into hubs identified for the purpose. Where a box or conduit body is used for support, the luminaire (fixture) shall be secured directly to the box or conduit body, or through a threaded conduit nipple not over 75 mm (3 in.) long. (G) Enclosures in Concrete or Masonry.
314.25 Covers and Canopies. In completed installations, each box shall have a cover, faceplate, lampholder, or luminaire (fixture) canopy, except where the installation complies with 410.14(B). (A) Nonmetallic or Metal Covers and Plates. Nonmetallic or metal covers and plates shall be permitted. Where metal covers or plates are used, they shall comply with the grounding requirements of Section 250.110. FPN: For additional grounding requirements, see Section 410.
(C) Floor Boxes. Boxes listed specifically for this application shall be used for receptacles located in the floor. Exception: Where the authority having jurisdiction judges them free from likely exposure to physical damage, moisture, and dirt, boxes located in elevated floors of show windows and similar locations shall be permitted to be other than those listed for floor applications. Receptacles and covers shall be listed as an assembly for this type of location.
(C) Tap Conductors. Tap conductors of a type suitable for the temperature encountered shall be permitted to run from the luminaire (fixture) terminal connection to an outlet box placed at least 300 mm (1 ft.) from the fixture. Such tap conductors shall be in suitable raceway or Type AC or MC cable of at least 450 mm (18 in.) but not more than 1.8 m (6 ft) in length. Article 504 504.20 Wiring Methods.
Article 552 – Park Trailers 552.48 Wiring Methods. (G) Protected. Metal-clad, Type AC, or nonmetallicsheathed cables and electrical nonmetallic tubing shall be permitted to pass through the centers of the wide side of 2 4 wood studs. However, they shall be protected where they pass through 2 2 wood studs or at other wood studs or frames where the cable or tubing would be less than 32 mm (11⁄4 in.) from the inside or outside surface.
system shall be so arranged, with approved smoke detection devices, that upon the detection of fire or products of combustion in the underfloor space the circulation of air will cease. (4) Openings in raised floors for cables protect cables against abrasions and minimize the entrance of debris beneath the floor.
Section 11 Miscellaneous TEMPORARY POWER Use the permanent ENT wiring and permanent fixtures for temporary lighting (above) or use permanent ENT, wiring and permanent fixtures for temporary lighting (below). 69 w w w. c a r l o n .
Section 12 ™ Flex-Plus Blue ENT ® ELECTRICAL NONMETALLIC TUBING – COILS LR83580 E73317 Listed for use with 90ºC conductors Wt. Per Coil Part No. Size O.D. 100 Ft. Length Standard Carlon Blue* – for Power Conductors 1/2" .840 11 200 12005-200 3/4" 1.050 14 100 12007-100 12008-100 1" 1.315 22 100 Yellow** – Recommended for Communications Conductors 1/2" .840 11 200 12005Y-200 3/4" 1.050 14 100 12007Y-100 12008Y-100 1" 1.315 20 100 Red** – Recommended for Fire-Protective Signaling Conductors 1/2" .
ELECTRICAL NONMETALLIC TUBING – REELS E73317 LR83580 Listed for use with 90ºC conductors Part No. Size Standard Carlon Blue 1/2" 12005AK-001 3/4" 12007AA-001 12008-750 1" 12009-750 11/4" 12010-750 11/2" 12011-500 2" Yellow 1/2" 1205AKY-001 3/4" 1207AAY-001 12008Y-750 1" Red 1/2" 1207AAR-001 3/4" 1207AKR-100 12008R-750 1" O.D. Wt. Per 100 Ft. Reel Length .840 1.050 1.315 1.660 1.990 2.375 11 14 20 19 27 32 1500 1000 750 750 750 500 .840 1.050 1.315 11 14 20 1500 1000 750 .840 1.050 1.
ONE PIECE QUICK CONNECT FLEX-PLUS® BLUE™ FITTINGS AND ACCESSORIES ▲ E86720 Except where noted by LR92248 ONE PIECE QUICK CONNECT COUPLING Part No. Size Pkg. Qty. 1/2" 150 A240D 3/4" 100 A240E A240F 1" 50 Patent Pending Patent Pending Patent Pending ONE PIECE QUICK CONNECT THREADED MALE ADAPTERS Part No. Size Pkg. Qty. 1/2" 150 A243D 3/4" 100 A243E A243F 1" 50 ONE PIECE QUICK CONNECT SNAP-IN TERMINATOR ADAPTERS Part No. Size Pkg. Qty.
QUICK CONNECT OUTLET AND SWITCH BOXES (IN CARLON BLUE) E42728 *Suitable for masonry walls Part No. Size Single Gang – 16 cu. in. A58381D 3 2 1/2 3 (1/2" KO’s) A58381E 3 2 1/4 3 (3/4" KO’s) Pkg. Qty. 25 25 4 Inch Square Boxes – 20 cu. in. 100 A52151D 4 4 11/2 (1/2" KO’s) 100 A52151E 4 4 11/2 (3/4" KO’s) A52151DE 4 4 11/2 (1/2" & 3/4" KO’s) 100 4 Inch Square Boxes – 30.3 cu. in.
SQUARE COVERS (IN CARLON BLUE) Square Covers for Outlet and Switch boxes E42728 Part No. Rise Single Gang 1/2" A410 5/8" A411 3/4" A412 A413 1" A414 11/4" Two Gang A400 A420 A421 A422 Blank 1/2" 5/8" 3/4" Cu. in. Pkg. Qty. 3.5 4.2 5.0 6.6 8.1 100 50 50 40 30 – 6.1 7.4 8.8 100 75 50 50 BOX BACK WALL SUPPORT Part No. A540DS Size 1/2" Knockout Pkg. Qty.
ROUND PLASTER RING (IN CARLON BLUE) E42728 Round Covers for Octagon Ceiling Boxes Part No. Rise Cu. in. 1/2" 3.2 A471 5/8" 4.0 A472 Pkg. Qty. 100 100 ROUND BLANK COVERS (IN CARLON BLUE) Part No. Rise Cu. in. Pkg. Qty. E460R-CAR Blank – 35 A470D Blank – 100 w/ 1/2" KO CONDUIT CUTTERS Item Small Conduit Cutter Tool length 8" Part No. CC120B Std. Pkg. Std. Pkg. Qty. Wt.
ENT CEMENT Part No. Size VC9993 VC9992 Pt. - Brush Top Qt. - Brush Top Std. Ctn. Qty. 24 12 See ENT cementing instructions below. CONCRETE ENCASEMENT GUIDELINES Carlon’s new quick connect one piece fittings are approved for concrete-tight installations. For sizes larger than 1" the use of standard Carlon solvent weld fittings with the proper ENT Cement is recommended. 1. ENT should be tied to rebar at 2-3 foot intervals to prevent flotation. Suitable materials include wire, tie wraps, and tape. 2.
ENT Specifications GUIDE SPECIFICATION FOR ENT • Electrical Nonmetallic Tubing (ENT) is designed to replace EMT, flexible metal conduit or other raceway systems in accordance with Article 362 of the National Electrical Code, other applicable sections of the Code and local codes. • Any ENT used shall be listed to the requirements of UL 1653 and meets NEMA TC-13. • ENT shall be recognized by The National Evaluation Service, Inc. for use in fire resistive construction.
• Recognized for use in 1-hour fire resistive nonload bearing wall assemblies per NER-290 and ER-5644 • Recognized for use in a fire resistive ceiling assembly (up to 3 hours) per NER-290 and ER-5644 • Recognized for Through-Penetration Firestop systems as classified by UL to meet BOCA, SBCCI and ICBO codes • Nonconductive/noncorrosive pliable raceway system • Packaged in sticks, coils and reels • Available in three colors: Blue, Yellow and Red for color coding • Complete line of fittings & accessories spec
TYPICAL APPLICATIONS: • Residential: Low or high rise – multi or single family • Commercial: Low or high rise – office, shopping malls, retail, hotel/motel, restaurant, etc. • Nursing Homes/Hospitals in nonpatient care areas only • Schools, classrooms, dormitories, offices • Fire Alarm Systems • Recreational vehicles and parks • Marinas and boatyards • Information Technology equipment • Other uses per the current NEC 79 w w w. c a r l o n .
In USA, contact: 25701 Science Park Drive Cleveland, Ohio 44122 1-800-3-CARLON (1-800-322-7566) In Ohio, (216) 464-3400 Fax: (216) 766-6444 TDD/Hearing Impaired Access (216) 831-5918 www.carlon.
