14/20 VNTC Tray Cable Type TC-ER (THHN PVC 600V)

14 AWG 20-Conductor VNTC (Vinyl Nylon Tray Cable) is a heavy-duty industrial control, signaling, and power distribution cable engineered for installation in commercial wireways, open cable trays, and structural conduits. Featuring twenty 14 AWG conductors twisted into a dense, nested round core, this multi-conductor cable utilizes high-performance THHN/THWN-2 inner conductor insulation wrapped in a rugged, sunlight-resistant Polyvinyl Chloride (PVC) outer jacket. This configuration provides a high-density, moisture-resistant wiring system optimized for routing complex control bundles, automated logic circuits, multi-point sensor networks, and multi-circuit utility feeds through demanding overhead or underground raceways.

AMPACITY RATINGS (NEC 310.16)

• 60°C Terminal Rating: 15 AMPS This is the baseline engineering safety rating. Use this value for final circuit sizing under normal operating conditions when connecting to standard equipment terminals or legacy breaker lugs restricted to 60°C constraints.

• 75°C Terminal Rating: 20 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 14 AWG copper conductor under normal code constraints.

• 90°C Terminal Rating: 25 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: The twisted-conductor architecture maximizes physical roundness and structural symmetry, providing 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 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 & Signaling: Routing digital command inputs, massive multi-point PLC loops, multi-stage relay logic tracks, and automated sensor returns in manufacturing plants, wastewater treatment zones, and assembly environments.

• Lighting & Power Control Networks: Supplying continuous power to complex automation lines, multi-wire branches requiring numerous dedicated indicator and control lines, emergency lighting pathways, and industrial machinery sub-circuits.

• 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: Standard 20-Conductor Phasing (ICEA Method 1, Table E-2)

• Conductor 1: Black

• Conductor 2: Red

• Conductor 3: Blue

• Conductor 4: Orange

• Conductor 5: Yellow

• Conductor 6: Brown

• Conductor 7: Red with Black Stripe (Tracer)

• Conductor 8: Blue with Black Stripe (Tracer)

• Conductor 9: Orange with Black Stripe (Tracer)

• Conductor 10: Yellow with Black Stripe (Tracer)

• Conductor 11: Brown with Black Stripe (Tracer)

• Conductor 12: Black with Red Stripe (Tracer)

• Conductor 13: Blue with Red Stripe (Tracer)

• Conductor 14: Orange with Red Stripe (Tracer)

• Conductor 15: Yellow with Red Stripe (Tracer)

• Conductor 16: Brown with Red Stripe (Tracer)

• Conductor 17: Black with Blue Stripe (Tracer)

• Conductor 18: Red with Blue Stripe (Tracer)

• Conductor 19: Blue with Red Stripe (Tracer)

• Conductor 20: Orange with Blue Stripe (Tracer)

• Note: VNTC constructions typically include a continuous printed identification code or numbering system on the surface of the jacket for circuit tracking.

Technical Specifications

• Conductor Size: 14 AWG

• Number of Power Conductors: 20

• 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 high-density multi-conductor tray cables like the 14-20 VNTC, installers must apply ampacity adjustment factors for more than three current-carrying conductors per NEC Article 310.15(C)(1). For a 20-conductor cable where all lines carry continuous current, the ampacity must be derated to 50% of its baseline rating. Using the 90°C baseline (25 Amps), the adjusted ampacity calculation drops to 12.5 Amps. This derating must be closely balanced against the total continuous load of the circuit to ensure compliance and avoid overcurrent trip faults or excessive heat generation within the dense cable core.

CABLE TYPE: 14 AWG / 20-Conductor Stranded Round THHN/PVC Type TC Tray Cable

DISCLAIMER: The technical information provided is for general reference only. Large-scale industrial power distribution paths, 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.