Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
Thermoplastic Fixture (TF) Wire
Conductor: Copper, solid (Class 1) & stranded (Class 2, 7-wire)
Insulation: PVC, 0.8mm, flame-retardant, oil/acid/moisture resistant
Temperature: 90°C dry continuous, -40°C to +90°C, min install -25°C
Configurations: Single conductor & two conductor, black/white
Range: AWG 18 (0.75-1.0mm²) to AWG 16 (1.2-1.25mm²)
Standard: UL 66, UL 83, UL 1581, CSA C22.2
Product Overview
Thermoplastic Fixture (TF) Wire is a 600V single-conductor (and two-conductor) copper building wire with PVC thermoplastic insulation, manufactured to UL 66 (Fixture Wire), UL 83 (Thermoplastic-Insulated Wires and Cables), and UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords). CSA C22.2 compliant for Canadian installations. TF wire is UL Listed for use in luminaires, signs, pendant fixtures, and internal wiring of electrical equipment where the conductor is protected within an enclosure or raceway. The PVC jacket is flame-retardant, moisture-resistant, and resistant to oil and acids encountered in manufacturing environments. Available with solid or stranded copper conductors in single-conductor and two-conductor configurations, with standard colors black and white (custom colors on request). With a 90°C dry-location temperature rating and working voltages up to 600V, TF wire is the standard North American fixture and machine-tool wiring solution for OEMs, lighting manufacturers, and appliance builders. Operating temperature is -40°C to +90°C with a minimum installation temperature of -25°C.
TF wire fills a specific niche in the North American electrical market: small-gauge (18-16 AWG, 0.75-1.25mm²) building wire designed for protected internal wiring applications. Unlike power distribution cables (e.g. URD, THHN) which carry current over long distances, TF wire is the final link inside the product — the wire that connects the ballast to the lamp socket, the switch to the motor, the transformer to the control board. Its PVC insulation provides the flame retardancy required inside enclosed luminaires without the bulk or cost of XLPE cross-linked polyethylene. The solid conductor variant offers easier termination in push-in connectors common in fluorescent fixture manufacturing; the stranded variant provides flexibility for routing through cramped appliance chassis. With a bending radius of 4× the overall diameter (3.2 mm minimum), TF wire can be dressed through the tightest internal pathways without kinking or insulation damage.
For equipment manufacturers specifying wire for their UL Listed end products, TF wire's UL 66 and CSA C22.2 dual certifications mean one part number covers both US and Canadian compliance. The PVC compound is specifically formulated to withstand the elevated temperatures inside luminaire housings without degradation, embrittlement, or outgassing — a critical requirement in enclosed fixture applications where wire replacement is impractical after assembly.
Solid Copper Conductor
Single solid copper strand, AWG 18 (1.0mm²) and AWG 16 (1.2mm²). Ideal for push-in connectors and automated termination in high-volume fixture manufacturing.
Stranded Copper Conductor
7-strand copper, AWG 18/7 (0.75mm²) and AWG 16/7 (1.25mm²). Flexible routing through tight appliance and luminaire chassis without kinking.
PVC Insulation (90°C)
Flame-retardant PVC, 0.8mm uniform wall thickness. Moisture, oil, and acid resistant. 90°C continuous dry, -40°C to +90°C operating, min installation -25°C.
Single & Two Conductor
Both solid and stranded variants available as single conductor or factory-bonded two-conductor for simplifying fixture wiring harness assembly.
UL 66 + CSA Listed
UL 66 (Fixture Wire), UL 83, UL 1581, CSA C22.2. Dual US/Canada certification — one part number for North American OEM compliance.
Machine-Tool & Sign Rated
Suitable for internal wiring of machine tools per NFPA 79, signs per UL 48, and luminaires per UL 1598. 600V working voltage, 4×D minimum bend radius.
Technical Characteristics
| Rated Voltage | 600V |
| Max. Conductor Temperature | +90°C (continuous, dry locations) |
| Operating Temperature | -40°C to +90°C |
| Min. Installation Temperature | -25°C |
| Min. Bending Radius | 4 × overall diameter (min 3.2 mm) |
| Insulation Material | PVC (thermoplastic), flame-retardant, moisture/oil/acid resistant |
| Standard Colors | Black, White (custom colors on request) |
| Conductor Types | Solid (Class 1) & Stranded (Class 2), copper |
Applicable Standards
| Standard | Scope |
|---|---|
| UL 66 | UL Standard for Fixture Wire. Primary standard covering TF wire construction, testing, and listing for use in luminaires and signs. |
| UL 83 | UL Standard for Thermoplastic-Insulated Wires and Cables. Covers PVC-insulated single-conductor building wire rated 600V. |
| UL 1581 | UL Reference Standard for Electrical Wires, Cables, and Flexible Cords. Physical and electrical test methods referenced by UL 66 and UL 83. |
| CSA C22.2 | Canadian Standards Association. Dual-listed for installations in Canada — one product, both North American markets. |
North American Building Wire Family
| Designation | Insulation | Temperature | Typical Use |
|---|---|---|---|
| TF (Fixture Wire) | PVC | 90°C dry | Luminaires, signs, internal appliance wiring |
| TFN (Fixture Wire Nylon) | PVC + Nylon | 90°C dry | Same as TF, with nylon jacket for mechanical protection |
| THHN (Building Wire) | PVC + Nylon | 90°C dry | General-purpose building wire, conduit and raceway |
| THWN-2 (Wet Location) | PVC + Nylon | 90°C dry/wet | Building wire rated for wet locations and outdoor conduit |
Technical Specifications
Copper conductors: solid (Class 1) and stranded (Class 2, 7 wires). PVC insulation: 0.8mm uniform wall thickness. Color: black or white, custom on request. Sizes per AWG: 18 = 0.75-1.0mm², 16 = 1.2-1.25mm². All values at 20°C.
Single Conductor — Solid
| Size (mm²) | AWG | Wire Dia. (mm) | Insulation (mm) | Overall Dia. (mm) | Weight (kg/km) |
|---|---|---|---|---|---|
| 1.0 | 18 | 1.024 | 0.8 | 2.624 | 19.26 |
| 1.2 | 16 | 1.291 | 0.8 | 2.891 | 21.33 |
Single Conductor — Stranded (7-Wire)
| Size (mm²) | AWG | Wire (No. × mm) | Insulation (mm) | Overall Dia. (mm) | Weight (kg/km) |
|---|---|---|---|---|---|
| 0.75 | 18/7 | 7 × 0.4 | 0.8 | 2.8 | 15.58 |
| 1.25 | 16/7 | 7 × 0.5 | 0.8 | 3.1 | 21.33 |
Two Conductor — Solid
| Size (mm²) | AWG | Wire (No. × mm) | Insulation (mm) | Overall Dia. (mm) | Weight (kg/km) |
|---|---|---|---|---|---|
| 1.0 | 18 | 2 × 1.024 | 0.8 | 5.248 | 31.78 |
| 1.2 | 16 | 2 × 1.291 | 0.8 | 5.782 | 43.52 |
Two Conductor — Stranded (7-Wire)
| Size (mm²) | AWG | Wire (No. × mm) | Insulation (mm) | Overall Dia. (mm) | Weight (kg/km) |
|---|---|---|---|---|---|
| 0.75 | 18/7 | 7 × 0.4 | 0.8 | 5.6 | 28.5 |
| 1.25 | 16/7 | 7 × 0.5 | 0.8 | 6.2 | 39.3 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Packaging | Plastic or wooden spools; 100m/500m/1000ft standard reels; custom lengths available |
| Drum Marking | Manufacturer, TF Wire, AWG, solid/stranded, color, length, weight, spool number, UL/CSA marks |
| Color Options | Black, White (standard); 10-color packs available; UV-resistant blue, red, green, yellow on request |
| Outer Protection | Shrink-wrapped spools for sea freight; carton boxes for small quantities |
| Delivery Condition | Factory-new, tested per UL 66 / UL 83 / UL 1581, UL Listed and CSA certified |
Typical Applications
TF Wire is the standard internal wiring solution for North American lighting and equipment manufacturers. Unlike outdoor distribution cables, TF wire is used exclusively inside protected enclosures — luminaire housings, sign cabinets, machine control panels, and appliance chassis:
Luminaire Internal Wiring
Standard fixture wire per UL 66 and UL 1598. Ballast-to-socket, driver-to-LED board, and internal junction connections in fluorescent and LED fixtures.
Sign & Display Wiring
Per UL 48 for electric signs and displays. Internal wiring of channel letters, cabinet signs, and illuminated displays.
Machine-Tool Internal Wiring
Per NFPA 79 for industrial machinery. Control panel point-to-point wiring, sensor leads, and actuator connections inside protected enclosures.
Appliance Wiring Harness
Internal wiring of commercial and residential appliances. Solid for push-in connectors; stranded for flexible routing.
OEM Manufacturing
UL Listed component for US and Canadian OEMs. One part number covers both markets under UL 66 and CSA C22.2 dual certification.
Control Panel Wiring
Internal point-to-point wiring in industrial control panels and electrical enclosures where 600V/90°C PVC insulation meets NEC requirements.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.