UL 1277 XHHW-2 Unscreened Control Cable 600V
UL 1277 XHHW-2 Unscreened Control Cable is a 600V multicore industrial control/tray cable with bare annealed copper conductors, flame-retardant XLPE insulation and a black special-PVC outer sheath. This page focuses on the finished cable assembly and installation environments associated with tray/control cable service.
PRODUCT OVERVIEW
The cable combines XHHW-2 XLPE-insulated conductors with an overall special-PVC sheath in an unscreened multicore construction. The source product data lists trays, wireways, ducts, conduit, aerial use with messenger support, direct burial, wet or dry locations and outdoor cable trays where sunlight resistance is required.
For the UL 1277 landing page, the emphasis is not only the XLPE insulation on the individual conductors but the complete multicore cable as an installation product. The listed 600V / 90°C construction is available in 10 AWG and 12 AWG with scheduled core counts up to 50.
KEY FEATURES
- UL 1277 referenced electrical power/control tray-cable construction.
- 600V, +90°C product rating.
- Bare annealed copper conductors.
- Flame-retardant XLPE insulation.
- Black special-PVC outer sheath.
- Unscreened multicore construction.
- 10 AWG and 12 AWG listed sizes.
- Scheduled multicore range from 2 to 50 cores.
- Product data lists tray, wireway, duct, conduit, direct-burial, wet/dry and outdoor applications.
CABLE CONSTRUCTION
Conductor | Bare annealed copper |
Insulation | Flame-retardant XLPE (Cross-Linked Polyethylene) |
Binder Tape | Present in the listed construction; material not stated in the source data |
Ripcord | Nylon |
Metallic Screen | None |
Outer Sheath | Special PVC (Polyvinyl Chloride), black |
Core Identification | Not specified in the source product data; confirm project requirement |
UL 1277 INSTALLATION FOCUS
Focus | How It Relates to This Product |
Complete Cable Assembly | Multicore XHHW-2 insulated conductors under an overall PVC sheath |
Cable Tray / Raceway | Trays, wireways, ducts and conduit are listed in the product application |
Outdoor Use | Outdoor tray use with sunlight-resistant rating is stated |
Wet / Dry Locations | Both are stated in the source product data |
Direct Burial | Listed in the product application; confirm the marking on the offered cable |
Hazardous Locations | Class 1, Division 2 is stated in the source product data; complete installation approval must be reviewed separately |
UL 1277 VS UL 44 - WHY BOTH STANDARDS APPEAR
Standard | Primary Role on This Product |
UL 1277 | Complete multicore tray/control cable and installation category |
UL 44 | XHHW-2 thermoset-insulated conductor / cable insulation system |
The two standards are complementary rather than redundant. UL 44 explains the XHHW-2 thermoset-insulated conductor system, while UL 1277 is the more useful reference when the buyer is evaluating the finished tray/control cable and its installation category.
PRODUCT APPLICATIONS
- Oil-industry control and auxiliary circuits.
- Cable trays and wireways.
- Duct and conduit installations.
- Aerial installations when properly supported by a messenger.
- Direct burial as stated in the source product data.
- Wet or dry industrial locations.
- Outdoor cable trays where a sunlight-resistant rating is required.
- Class 1, Division 2 hazardous-location applications as stated in the source product data.
The following table reproduces the listed XHHW-2 unscreened product schedule for 10 AWG and 12 AWG multicore constructions.
| Cores | AWG | Insulation mm | Sheath mm | Overall Dia. mm | Weight kg/km | Nominal Ampacity A |
|---|---|---|---|---|---|---|
| 2 | 10 | 0.76 | 1.14 | 11.94 | 190 | 40.0 |
| 3 | 10 | 0.76 | 1.14 | 12.57 | 259 | 40.0 |
| 4 | 10 | 0.76 | 1.14 | 13.84 | 332 | 32/40 |
| 5 | 10 | 0.76 | 1.52 | 16.00 | 432 | 32.0 |
| 6 | 10 | 0.76 | 1.52 | 17.40 | 507 | 32.0 |
| 7 | 10 | 0.76 | 1.52 | 17.40 | 568 | 28.0 |
| 8 | 10 | 0.76 | 1.52 | 18.80 | 607 | 28.0 |
| 9 | 10 | 0.76 | 1.52 | 20.32 | 713 | 28.0 |
| 10 | 10 | 0.76 | 1.52 | 21.72 | 752 | 20.0 |
| 11 | 10 | 0.76 | 2.03 | 23.11 | 865 | 20.0 |
| 12 | 10 | 0.76 | 2.03 | 23.75 | 932 | 20.0 |
| 13 | 10 | 0.76 | 2.03 | 24.13 | 997 | 20.0 |
| 14 | 10 | 0.76 | 2.03 | 24.89 | 1064 | 20.0 |
| 15 | 10 | 0.76 | 2.03 | 25.65 | 1131 | 20.0 |
| 20 | 10 | 0.76 | 2.03 | 28.58 | 1463 | 20.0 |
| 25 | 10 | 0.76 | 2.03 | 32.00 | 1799 | 18.0 |
| 30 | 10 | 0.76 | 2.03 | 34.16 | 2124 | 18.0 |
| 35 | 10 | 0.76 | 2.03 | 36.32 | 2447 | 16.0 |
| 40 | 10 | 0.76 | 2.03 | 38.35 | 2770 | 16.0 |
| 45 | 10 | 0.76 | 2.03 | 40.77 | 3098 | 14.0 |
| 50 | 10 | 0.76 | 2.03 | 42.29 | 3417 | 14.0 |
| 2 | 12 | 0.76 | 1.14 | 10.67 | 140 | 30.0 |
| 3 | 12 | 0.76 | 1.14 | 11.30 | 188 | 30.0 |
| 4 | 12 | 0.76 | 1.14 | 12.32 | 238 | 24.0/30.0 |
| 5 | 12 | 0.76 | 1.14 | 13.59 | 289 | 24.0 |
| 6 | 12 | 0.76 | 1.52 | 15.49 | 366 | 24.0 |
| 7 | 12 | 0.76 | 1.52 | 15.49 | 406 | 21.0 |
| 8 | 12 | 0.76 | 1.52 | 16.76 | 432 | 21.0 |
| 9 | 12 | 0.76 | 1.52 | 18.03 | 507 | 21.0 |
| 10 | 12 | 0.76 | 1.52 | 19.18 | 530 | 15.0 |
| 11 | 12 | 0.76 | 1.52 | 19.56 | 573 | 15.0 |
| 12 | 12 | 0.76 | 1.52 | 20.19 | 619 | 15.0 |
| 13 | 12 | 0.76 | 1.52 | 20.57 | 662 | 15.0 |
| 14 | 12 | 0.76 | 1.52 | 21.21 | 708 | 15.0 |
| 15 | 12 | 0.76 | 1.52 | 21.84 | 753 | 15.0 |
| 19 | 12 | 0.76 | 1.52 | 24.26 | 975 | 15.0 |
| 20 | 12 | 0.76 | 1.52 | 25.27 | 1025 | 15.0 |
| 25 | 12 | 0.76 | 1.52 | 28.32 | 1260 | 13.5 |
| 30 | 12 | 0.76 | 1.52 | 30.23 | 1481 | 13.5 |
| 35 | 12 | 0.76 | 1.52 | 32.13 | 1700 | 12.0 |
| 37 | 12 | 0.76 | 1.52 | 32.13 | 1897 | 12.0 |
| 40 | 12 | 0.76 | 1.52 | 33.91 | 1918 | 12.0 |
| 45 | 12 | 0.76 | 1.52 | 35.81 | 2140 | 10.5 |
| 50 | 12 | 0.76 | 1.52 | 37.21 | 2354 | 10.5 |
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From Production to Delivery
From raw material preparation to final shipmen, every stage is caretuly controled to ensure consistent conductor quality, reliable pertormance,and sae delivery. Our roduction,
inspection, packaging, and logistics processes are managed in accordance with applicable standards and project requirements.
Production
Bare annealed copper conductors are insulated with flame-retardant XLPE, assembled into the required multicore construction, provided with the listed binder/ripcord arrangement and finished with the black special-PVC outer sheath.
Inspection
Inspection focuses on conductor condition, XLPE insulation thickness, sheath thickness, overall diameter, cable weight, electrical performance and consistency with the approved product schedule.
Packaging
Finished cable is wound on suitable reels or drums according to cable size, weight and ordered length. Product identification can include standard reference, AWG size, core count, length and project reference.
Shipping
Before shipment, cable identification, packing and requested technical documentation are checked against the order. Project-specific inspection or approval documents should be confirmed before production.
Frequently Asked Questions
Can this cable be installed in trays, conduit and direct burial?
Those applications are all listed in the source product data. For project approval, confirm the exact markings and listing on the offered cable, especially for direct burial, sunlight resistance and wet locations.
Does UL 1277 itself make the cable suitable for Class 1, Division 2?
The source product data states Class 1, Division 2 use, but hazardous-location suitability also depends on the complete wiring method, fittings, seals and governing electrical code. The cable marking and installation design should be reviewed together.
When should I choose the unscreened construction?
Use the unscreened version where the project does not require an overall metallic screen. If nearby electrical interference is a concern or the specification explicitly requires shielding, a screened control-cable construction should be evaluated.
How should I use the weight and diameter values?
They are important for tray loading, conduit fill, drum sizing, pulling and panel-entry design. High-core-count constructions become significantly larger and heavier, so mechanical planning should be completed together with electrical selection.
What should be included in a quotation request?
Provide AWG size, number of cores, total length and installation method. Also state required UL marking/listing, direct-burial, sunlight-resistant, wet-location or hazardous-location requirements, reel length and technical documents.
What products do you supply for the power cable industry?
We provide a wide range of cable materials and electrical products, including aluminum conductors, aluminum rods, aluminum wires, overhead conductors, medium and low voltage power cables, cable insulation materials, filling materials, shielding materials, and cable manufacturing consumables.We provide customized solutions according to different cable manufacturing requirements.
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