1/4 VNTC Tray Cable w/ Ground Type TC-ER (THHN PVC 600V)

1 AWG 4-Conductor VNTC (Vinyl Nylon Tray Cable) with Ground (Numbered Conductors) is a heavy-duty, industrial-grade power feeder and branch cable engineered for installation in open cable trays, structural conduits, and industrial wireways. Comprising four standalone 1 AWG stranded bare copper power conductors alongside a dedicated bare copper grounding wire, this multi-conductor assembly utilizes high-performance THHN/THWN-2 insulation cores wrapped in a rugged, sunlight-resistant Polyvinyl Chloride (PVC) outer jacket.

Engineered for industrial environments, this variation features uniform black insulation across all power legs, with each conductor uniquely identified by high-visibility, wear-resistant surface numbers (Conductor 1, Conductor 2, Conductor 3, Conductor 4) printed continuously along the core. The round profile, alphanumeric tracking system, and integrated grounding infrastructure provide maximum durability and streamlined termination, making it an ideal choice for high-capacity three-phase networks requiring a dedicated neutral, main panel distribution entries, and heavy industrial machinery sub-panels.

AMPACITY RATINGS (NEC 310.16)

• 60°C Terminal Rating: 110 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 breaker lugs restricted to 60°C constraints.

• 75°C Terminal Rating: 130 AMPS This is the standard engineering design rating. Use this value for most standard modern terminal connections and commercial distribution control setups, as most industrial equipment lugs are restricted to 75°C terminations.

• 90°C Terminal Rating: 145 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 high-amperage tray cables together in tightly packed industrial raceways.

Key Features

• Industrial Numbered Conductor Core: Eliminates traditional color-coding in favor of alphanumeric tracking (1, 2, 3, 4 printed on the insulation). This standard industrial layout reduces phase confusion on large jobsites and streamlines connections to matching numbered terminal blocks.

• High-Capacity Power Distribution (1 AWG): Sized to provide substantial power-carrying capacity with premium bare copper, making it an excellent choice for three-phase heavy machinery loops with a neutral, high-draw industrial sub-panels, and main transformer distribution connections.

• Integrated Bare Copper Ground Wire: Includes a factory-installed, dedicated bare copper grounding conductor twisted within the core, ensuring a reliable, low-impedance fault current path without the need to pull an independent grounding line.

• 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

• Main Feeders & Service Entrances: Injecting raw power from outdoor utility transformers into high-capacity indoor distribution panels, switchgear arrays, and main disconnect hubs requiring a 4-conductor layout.

• Industrial & Heavy Manufacturing Layouts: Routing high-amperage power across industrial environments, paper mills, foundries, mining sites, and petrochemical operations via open indoor or outdoor cable trays.

• Direct Burial Site Distribution: Burying underground branch and feeder circuits between commercial facilities, outer maintenance hubs, outbuildings, and municipal wastewater treatment zones.

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

Circuit Identification: Standard Industrial Numbering Method

• Conductor 1: Black Insulation printed with "1" or "ONE"

• Conductor 2: Black Insulation printed with "2" or "TWO"

• Conductor 3: Black Insulation printed with "3" or "THREE"

• Conductor 4: Black Insulation printed with "4" or "FOUR"

• Dedicated Ground: 6 AWG Stranded Bare Copper

• Note: VNTC constructions also include a continuous printed identification code on the surface of the jacket for cable type and structural standard tracking.

Technical Specifications

• Conductor Size: 14 AWG

• Number of Power Conductors: 4

• Conductor Type: Stranded Bare Copper

• Ground Wire Size: 6 AWG Stranded Bare Copper

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

• 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 1 AWG 4-conductor VNTC tray cable, installers must apply ampacity adjustment factors per NEC Article 310.15(C)(1) if more than three conductors are considered current-carrying. In a standard three-phase system where the fourth conductor serves as a neutral carrying only unbalanced current, the neutral does not count as a current-carrying conductor, and derating is not required. However, if the circuit feeds non-linear loads (such as heavy variable-frequency drives, electronic ballasts, or UPS systems), harmonic currents will manifest on the neutral, requiring it to count as a current-carrying line. Under those conditions, the 4-conductor bundle must be derated to 80% of its 90°C ampacity (145 Amps × 0.80 = 116 Amps). Final breaker sizing must always align with the terminal temperature limitations of the connected equipment (typically the 75°C rating of 130 Amps).

CABLE TYPE: 1 AWG / 4-Conductor Stranded Round THHN/PVC Type TC Tray Cable with Ground (Numbered Conductors)

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.