10/37 VNTC Tray Cable Type TC-ER (THHN PVC 600V)

10 AWG 37-Conductor VNTC (Vinyl Nylon Tray Cable) is an extreme-density industrial control, signaling, and power distribution cable engineered for installation in commercial wireways, open cable trays, and structural conduits. Featuring thirty-seven 10 AWG conductors twisted into a dense, nested round core, this multi-conductor Type TC (Tray Cable) assembly utilizes high-performance THHN/THWN-2 inner conductor insulation wrapped in a rugged, flame-retardant, and sunlight-resistant Polyvinyl Chloride (PVC) outer jacket.

This configuration provides an exceptionally high-capacity, moisture-resistant wiring system optimized for routing dense control bundles, automated logic circuits, multi-point sensor networks, and heavy distribution signaling arrays through demanding overhead or underground raceways where a separate structural grounding path is utilized.

AMPACITY RATINGS (NEC 310.16)

• 60°C Terminal Rating: 30 AMPS This is the baseline engineering safety rating. Use this value for final circuit sizing under normal operating conditions when connecting to legacy equipment terminals or standard breaker lugs restricted to 60°C constraints.

• 75°C Terminal Rating: 35 AMPS This is the standard engineering design rating. Use this value for modern industrial terminal configurations, as it represents the typical maximum operational ampacity for a standard 10 AWG copper conductor.

• 90°C Terminal Rating: 40 AMPS This is the maximum capacity rating. Use this value strictly as the baseline calculation factor when adjusting or derating for high ambient operating temperatures, or when bundling multiple tray cables together in packed industrial raceways.

Key Features

• Industrial Round Profile Construction: Wires are twisted inside the jacket into a dense nested layout, maximizing physical roundness and structural symmetry. This ensures uniform physical strength, balanced weight distribution, and effortless pull-ins through long conduit layouts or multi-bend raceways.

• Dual THHN / THWN-2 Conductor Insulation: Inner copper conductors are wrapped in high-dielectric PVC and topped with a rugged clear nylon skin. This dual-layer architecture ensures superior resistance to oil, gasoline, moisture, and insulation scraping during difficult installations.

• Direct Burial & Sunlight Resistant: Protected by an extruded, flame-retardant outer PVC jacket that forms an impermeable barrier against harsh ambient conditions, making it safe for open air tray runs, direct burial trenching, or wet environments.

• Highly Conductive Bare Copper: Manufactured with high-purity, soft-annealed stranded bare copper conductors to deliver optimal electrical conductivity, minimal line resistance, and sufficient physical flexibility for long pulled runs.

• Rigorous Industrial Flame Ratings: Engineered to prevent the migration of fire across open structural paths, fully certified to pass the demanding IEEE 1202 / UL 1685 vertical tray flame tests.

Common Applications

• Industrial Control & Power Signaling: Routing heavy command inputs, multi-stage relay logic tracks, motor control centers (MCCs), and high-draw automated machinery fields.

• Complex Control System Interconnects: Supplying continuous signaling and control power to multi-motor control centers (MCCs), automated assembly rows, large process control valves, and manufacturing system consoles.

• Conduit and Wireway Routing: Pulling high-density multi-circuit infrastructure connections through structural conduits, commercial utility tunnels, underground duct banks, or open-air wire mesh trays.

• Hazardous Environment Deployment: Approved under strict National Electrical Code provisions for installation within Class I, Division 2 hazardous industrial locations.

Circuit Identification: Colors or Standard Multi-Conductor Coding

CONDUCTOR COLORS:
Black, Red, Blue, Orange, Yellow, Brown, Red/Black, Blue/Black, Orange/Black, Yellow/Black, Brown/Black, Black/Red, Blue/Red, Orange/Red, Yellow/Red, Brown/Red, Black/Blue, Red/Blue, Orange/Blue, Yellow/Blue, Brown/Blue, Black/Orange, Red/Orange, Blue/Orange, Yellow/Orange, Brown/Orange, Black/Yellow, Red/Yellow, Blue/Yellow, Orange/Yellow, Brown/Yellow, Black/Brown, Red/Brown, Blue/Brown, Orange/Brown, Yellow/Brown.
(Colors repeat after 36)

Because standard ICEA color tables become incredibly repetitive and error-prone beyond 21 or 25 conductors (requiring complex multi-stripe tracer combinations), 37-conductor control assemblies are almost universally manufactured utilizing the Alphanumeric Numbering Method:

• Conductor Insulation: Uniform black, high-dielectric PVC/Nylon cores.

• Markings: Each conductor is continuously stamped with a unique, high-visibility white number (numbered sequentially from 1 through 37) printed along its entire length.

• Termination Benefit: Drastically reduces installation labor and phase tracing confusion by allowing technicians to match physical wire numbers directly to matching alphanumeric termination strips inside PLC cabinets and field enclosures.

Technical Specifications

• Conductor Size: 10 AWG

• Number of Power/Control Conductors: 37

• Conductor Type: Stranded Bare Copper

• Insulation Material: PVC with Nylon Skin (THHN/THWN-2)

• Shielding: None (Unshielded)

• Jacket Material: PVC (Polyvinyl Chloride) - Black

• Voltage Rating: 600 Volts RMS

• Maximum Temperature Rating: 90°C Dry / 90°C Wet Continuous Operating

• Flame Test Ratings: IEEE 1202, UL 1685 Vertical Tray Flame Test, FT4

• Compliance Standards: UL 1277 (Type TC), NEC Article 336, Type THHN/THWN-2 Conductors, RoHS Compliant

Technical Note: When engineering layouts with extreme high-density multi-conductor tray cables like the 10-37 VNTC, installers must apply severe ampacity adjustment factors for more than three current-carrying conductors per NEC Article 310.15(C)(1). For a cable core containing 31 to 40 conductors where all lines carry continuous current, the ampacity must be severely derated down to 40% of its baseline rating. Using the 90°C baseline calculation factor (40 Amps), the adjusted maximum ampacity drops down to 16.0 Amps.

Additionally, the installer must account for the NEC "Small Conductor" rule (NEC 240.4(D)), which mandates that the standard maximum overcurrent protection device (the circuit breaker) for a standard 10 AWG conductor cannot exceed 30 Amps under standard branch circuit constraints. However, because the intense multi-conductor core heat constraints choke the actual calculated continuous ampacity limit down to 16.0 Amps, you cannot run these lines at standard branch circuit loads on a 30-Amp or even a 20-Amp breaker; breaker sizing and load profiles must be designed strictly around a 15-Amp thermal limit to prevent core heat traps and protect structural insulation integrity if all 37 lines are active continuously.

CABLE TYPE: 10 AWG / 37-Conductor Stranded Round THHN/PVC Type TC Tray Cable (No Ground)

DISCLAIMER: The technical information provided is for general reference only. Large-scale industrial control pathways, tray layouts, and machinery connections must strictly adhere to the National Electrical Code (NEC), local building structures, and relevant industrial safety parameters. Always cross-reference the official product submittal data sheet from the chosen manufacturer prior to finalizing physical system designs or cutting structural cable lengths.

General Shipping Information

In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.

You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.

Expedited Shipping

Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).

Returns

You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.

Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.

Orders on any items with a material value of $50 or less are non-returnable.