Electrical Non-Metallic Tubing, Smurf Tube
ENT - Electrical non-metallic tubing, Smurf Tube, PENT series is made of polyvinyl chloride (PVC). The material complies with RoHS environmental requirements and the ENT PVC flexible conduit has been certified with the UL 1653 standard. It can be directly buried in concrete or used for power wiring above the ceiling. The ENT PVC flexible conduit features lightweight but has high pressure resistance. The corrugated structure allows it to be bendable moreover it is also flame resistant for level FT4. It offers excellent durability and strong protection which effectively avoid potential damage. Meanwhile it is also easy to install that shortening labor hours and saving costs. The non-metallic ENT PVC flexible conduit is made in gray printed with blue, red or yellow lines, making it easy to identify power lines (blue), fire or emergency lines (red) and communication lines (yellow).
It is widely used in building wall piping, indoor wiring, protection of power, communication and control cables in industrial places and transportation systems.
Feature
-
Material:
PVC -
Temperature Range:
-20℃~+50℃ -
IP Rating:
IP 66 -
Flexibility：
Bendable -
Flammability Rating：
FT4 -
Direct Burial：
Yes -
RoHs Compliance：
Yes -
Standard :
ANSI/UL 1653, CSA C22.2 No. 227.1 -
Certificate :
cULus (1/2, 3/4, 1) & UL (1-1/4, 1-1/2), File No. E533399
Parameter
Stick Package
| Nominal Conduit Size | Nominal Conduit Size | Part Number | ID (mm) | OD (mm) | Bending Radius (mm) | Package/Stick (ft/m) | Certificate | Mated With |
|---|---|---|---|---|---|---|---|---|
| 16 | 1/2 | PENTGB-1/2-S | 14.58~16.00 | 21.13~21.54 | 87 | 10/3 |
|
|
| 21 | 3/4 | PENTGB-3/4-S | 19.66~21.18 | 26.42~26.92 | 119 | 10/3 |
|
|
| 27 | 1 | PENTGB-1-S | 25.37~26.90 | 33.15~33.66 | 152 | 10/3 |
|
|
| 35 | 1-1/4 | PENTGB-1-1/4-S | 33.73~35.36 | 41.86~42.47 | 204 | 10/3 |
|
|
| 41 | 1-1/2 | PENTGB-1-1/2-S | 39.57~41.20 | 47.96~48.56 | 239 | 10/3 |
|
|
Coil Package
| Nominal Conduit Size | Nominal Conduit Size | Part Number | ID (mm) | OD (mm) | Bending Radius (mm) | Package/Coil (ft/m) | Certificate | Mated With |
|---|---|---|---|---|---|---|---|---|
| 16 | 1/2 | PENTGB-1/2-C | 14.58~16.00 | 21.13~21.54 | 87 | 200/61 |
|
|
| 21 | 3/4 | PENTGB-3/4-C | 19.66~21.18 | 26.42~26.92 | 119 | 100/30.5 |
|
|
| 27 | 1 | PENTGB-1-C | 25.37~26.90 | 33.15~33.66 | 152 | 100/30.5 |
|
|
| 35 | 1-1/4 | PENTGB-1-1/4-C | 33.73~35.36 | 41.86~42.47 | 204 | 500/152.5 |
|
|
| 41 | 1-1/2 | PENTGB-1-1/2-C | 39.57~41.20 | 47.96~48.56 | 239 | 300/91.5 |
|
|
Reel Package
| Nominal Conduit Size | Nominal Conduit Size | Part Number | ID (mm) | OD (mm) | Bending Radius (mm) | Package/Reel (ft/m) | Certificate | Mated With |
|---|---|---|---|---|---|---|---|---|
| 16 | 1/2 | PENTGB-1/2-R | 14.58~16.00 | 21.13~21.54 | 87 | 1500/450 |
|
|
| 21 | 3/4 | PENTGB-3/4-R | 19.66~21.18 | 26.42~26.92 | 119 | 1000/305 |
|
|
| 27 | 1 | PENTGB-1-R | 25.37~26.90 | 33.15~33.66 | 152 | 750/225 |
|
|
| 35 | 1-1/4 | PENTGB-1-1/4-R | 33.73~35.36 | 41.86~42.47 | 204 | 1000/305 |
|
|
| 41 | 1-1/2 | PENTGB-1-1/2-R | 39.57~41.20 | 47.96~48.56 | 239 | 750/225 |
|
|
What is ENT (Electrical Non-Metallic Tubing) used for?
ENT, also known as Smurf Tube, is a corrugated PVC raceway used to protect and route electrical wiring in walls, ceilings, and concrete slabs. It is commonly used in residential, commercial, and light industrial buildings for power, lighting, and low-voltage wiring.
Can PENT Series ENT be directly buried in concrete?
Yes. PENT Series ENT is rated for direct concrete encasement and can also be installed above suspended ceilings, in accordance with NEC Article 362 and CSA Section 12-1500.
What certifications does PENT Series carry?
PENT Series is certified to ANSI/UL 1653 and CSA C22.2 No. 227.1. Sizes 1/2", 3/4", and 1" carry cULus certification; sizes 1-1/4" and 1-1/2" carry UL certification, under UL File No. E533399.
What sizes and packaging options are available?
PENT Series is available in nominal sizes from 1/2" to 1-1/2", offered in stick, coil, and reel packaging to match different installation and shipping requirements. See the Parameter table above for full dimensions and packaging length options.
How does ENT differ from flexible metal conduit (FMC)?
ENT is a non-metallic PVC raceway, making it lighter, corrosion-free, and suitable for concrete-encased or damp locations, while flexible metal conduit (FMC) offers greater mechanical and EMI protection. Project specifications and local electrical codes typically determine which is required.
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