12 AWG 2-Conductor Flat VNTC (Vinyl Nylon Tray Cable) without Ground (Black/Red Conductors) is a specialized commercial and industrial branch circuit cable designed for power, lighting, control, and signaling loops. Constructed in a flat, parallel configuration rather than a traditional round profile, this Type TC (Tray Cable) variation features two standalone 12 AWG stranded bare copper conductors insulated with high-performance THHN/THWN-2 cores, encased in a form-fitting, flame-retardant Polyvinyl Chloride (PVC) outer jacket.
This specific variation utilizes Black and Red insulation for clear phase-to-phase identification. The flat cross-sectional design makes it an exceptional choice for installation environments where vertical or horizontal space is highly restricted. It lays flat in shallow cable trays, fits neatly within compact low-profile wireways, and handles easily when pulled through structural raceways. This construction is highly favored for commercial automated lighting networks, 208V/240V industrial signaling tracks, fractional horsepower motor feeds, and branch power runs where a separate structural grounding path is provided.
AMPACITY RATINGS (NEC 310.16)
60°C Terminal Rating: 20 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: 25 AMPS This is the standard engineering design rating. Use this value for most standard modern terminal blocks, control relays, and electrical distribution equipment, as most modern industrial termination lugs are rated for 75°C constraints.
90°C Terminal Rating: 30 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 tightly packed industrial raceways.
Key Features
Phase-to-Phase Circuit Identification: Features one Black and one Red conductor. This color scheme explicitly indicates a line-to-line circuit, preventing installation errors and speeding up testing and termination processes on complex industrial control panels.
Low-Profile Flat Construction: Wires are arranged parallel to one another rather than twisted, creating a thin, flat profile. This minimizes the physical footprint, eliminates unnecessary cable bulk, and maximizes space efficiency inside crowded shallow trays and 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
208V / 240V Control & Signaling Circuits: Routing continuous line-to-line control signals, heavy-duty safety interlock loops, industrial machinery alarm relays, and contactor coils.
Commercial Industrial Lighting: Wiring automated facility high-voltage overhead lighting runs, industrial LED banks, and 208V outdoor security lighting loops.
Fractional Horsepower Motor Leads: Supplying power directly to small 208V/240V single-phase field motors, exhaust fans, and commercial HVAC damper controls.
Space-Constrained Raceways: Pulling through low-profile surface raceways, under-floor wireways, shallow control cabinet troughs, and tight structural partitions.
Hazardous Environment Deployment: Approved under strict National Electrical Code provisions for installation within Class I, Division 2 hazardous industrial locations.
Circuit Identification: Black/Red Color Code
Conductor 1: Black Insulation (Line 1 / Hot Phase)
Conductor 2: Red Insulation (Line 2 / Hot Phase)
Note: Surface tracking information is continuously printed on the black outer PVC jacket for compliance auditing.
Technical Specifications
Conductor Size: 12 AWG
Number of Wires: 2
Cable Geometry: Flat (Parallel)
Conductor Type: 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 12 AWG flat tray cable, the installer must account for the NEC "Small Conductor" rule (NEC 240.4(D)). Even though the physical 90°C thermal threshold of a 12 AWG copper conductor allows it to carry 30 Amps safely, the electrical code mandates that the overcurrent protection device (the circuit breaker) cannot exceed 20 Amps under standard branch circuit conditions. However, the higher 30-Amp rating remains highly useful as a mathematical starting point when calculating derating factors for high ambient facility heat or when stacking multiple flat cables closely together in a single open-air cable tray.
CABLE TYPE: 12 AWG / 2-Conductor Flat Stranded Parallel THHN/PVC Type TC Tray Cable (Black/Red, No Ground)
DISCLAIMER: The technical information provided is for general reference only. Commercial lighting grids, industrial control loops, and tray distribution paths 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.