Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
Outdoor Weather-proof PVC Insulated Wire OW
Voltage: 450/450V (single rating), test 2,500V/5min
Conductor: Hard-drawn copper, solid by diameter (2.0-5.0mm) & stranded (14-100mm²)
Insulation: Weather-proof black PVC, UV-resistant, 70°C continuous
Tensile: 1,310-39,300 N — outdoor span capable, no separate catenary needed
Range: 10 sizes — 5 solid (3.14-19.64mm²) + 5 stranded (14-100mm²)
Length: 300m coils (small solid + all stranded), 200m (large solid)
Standard: KS 3331 (Korean outdoor weather-proof wire), export wooden case
Product Overview
Outdoor Weather-proof PVC Insulated Wire OW (Wire OW) is a single-core hard-drawn copper conductor PVC insulated outdoor wire manufactured to the Korean standard KS 3331. Designed specifically for outdoor low-voltage electrical applications where the cable is exposed to weather — sunlight, rain, humidity, and temperature cycling — the black PVC insulation compound is formulated for UV resistance and moisture protection far beyond what indoor building wire PVC can provide. The conductor uses hard-drawn copper wire for electrical use, which offers higher tensile strength than annealed copper (critical for overhead spans and outdoor tension applications), at the expense of slightly higher conductivity compared to soft-annealed copper of the same purity. Rated at 450/450V (single voltage rating — unusual in the wire market where dual ratings like 300/500V or 450/750V are standard), OW wire is specifically a Korean domestic product designed for outdoor secondary distribution, service entrance, and weather-exposed wiring where standard indoor building wire would degrade within months.
OW wire is specified and manufactured differently from most building wires in one critical respect: the solid conductor line is dimensioned by conductor diameter (2.0, 2.6, 3.2, 4.0, 5.0mm) rather than by cross-sectional area (mm²). This is typical of older Korean and Japanese wire standards where the conductor was specified by its physical dimension rather than its calculated area — the cross-sectional areas shown (3.142, 5.309, 8.042, 12.57, 19.64mm²) are the mathematical πr² values derived from the stated diameters. The stranded conductor line (14-100mm²) follows conventional CSA designation. Both solid and stranded variants share the same 2500V/5min test voltage, black PVC insulation, 70°C maximum operating temperature, and tensile strength data — the inclusion of the minimum tensile load column (up to 39,300N for 100mm² stranded) reflects the outdoor/overhead application where the conductor must support its own weight plus wind and ice loading between supports without external catenary wire assistance.
The standard coil lengths follow a tiered system: 300m for smaller solid conductors (≤5.309mm²) and lighter stranded conductors (14-100mm²), tapering to 200m for larger solid conductors (8.042-19.64mm²). Export packaging is the standard wooden case and pallet across the entire product line. The weather-proof formulation gives OW wire its defining characteristic: unlike indoor PVC building wire which becomes brittle and cracks after UV exposure, OW wire's black PVC insulation maintains flexibility and dielectric integrity through years of direct sunlight and rain — making it the standard outdoor wire for Korean residential and light commercial electrical installations where conduit is not used.
Hard-Drawn Copper (Solid & Stranded)
Hard-drawn for tensile strength — critical for outdoor spans. Solid by diameter (2.0-5.0mm), stranded by CSA (14-100mm²). Higher tensile vs annealed copper.
Weather-Proof Black PVC
UV-resistant outdoor PVC compound. 70°C continuous, 2,500V/5min test. Black colour maximises UV absorption resistance — standard for outdoor wire globally.
450/450V Single Rating
Single voltage rating (not dual like 300/500 or 450/750) — Korean standard KS 3331 designation for outdoor secondary distribution wire.
Tensile Load Data Included
1,310-39,300 N tensile strength — rare for building wire, essential for outdoor overhead applications. Enables span calculations without separate catenary.
10 Sizes — Solid by Diameter
Solid: 2.0-5.0mm (3.14-19.64mm²). Stranded: 14-100mm². 300m coils (small), 200m (large solid). Export wooden case.
KS 3331 Korean Standard
Korean national standard for outdoor weather-proof PVC insulated wire. Required for Korean outdoor residential and commercial installations.
Technical Characteristics
| Rated Voltage | 450/450V |
| Test Voltage | 2,500V / 5 minutes |
| Max. Conductor Temperature | 70°C (continuous) |
| Conductor Material | Hard-drawn copper wire for electrical use |
| Insulation | Weather-proof PVC, black |
| Number of Cores | Single core |
| Package | Export wooden case & pallet |
| Standard | KS 3331 |
Applicable Standard
| Standard | Scope |
|---|---|
| KS 3331 | Korean national standard for outdoor weather-proof PVC insulated wires. Covers hard-drawn copper conductor single-core outdoor wire for secondary distribution and weather-exposed installations up to 450/450V. |
Technical Specifications
Hard-drawn copper conductor per KS 3331. Weather-proof black PVC insulation. Solid conductors specified by diameter — cross-sectional area is πr² derivative. Stranded conductors specified by nominal CSA. DC resistance at 20°C. Minimum tensile load per conductor. All 10 sizes single core.
Solid Conductor
| Conductor Dia. (mm) | Nominal Area (mm²) | Insulation (mm) | Overall Dia. (mm) | 20°C Res. (Ω/km) | Tensile Load (N) | Weight (kg/km) | Length (m) |
|---|---|---|---|---|---|---|---|
| 2.0 | 3.142 | 0.4 | 2.8 | 5.83 | 1,310 | 32 | 300 |
| 2.6 | 5.309 | 0.5 | 3.6 | 3.45 | 2,180 | 54 | 300 |
| 3.2 | 8.042 | 0.6 | 4.4 | 2.28 | 3,260 | 81 | 200 |
| 4.0 | 12.57 | 1.0 | 6.0 | 1.46 | 4,890 | 135 | 200 |
| 5.0 | 19.64 | 1.2 | 7.4 | 0.932 | 7,450 | 210 | 200 |
Stranded Conductor
| Cross Section (mm²) | Conductor (No. × mm) | Conductor OD (mm) | Insulation (mm) | Overall Dia. (mm) | 20°C Res. (Ω/km) | Tensile Load (N) | Weight (kg/km) | Length (m) |
|---|---|---|---|---|---|---|---|---|
| 14 | 7 × 1.6 | 4.8 | 1.0 | 6.8 | 1.35 | 5,620 | 160 | 300 |
| 22 | 7 × 2.0 | 6.0 | 1.2 | 8.4 | 0.849 | 8,710 | 250 | 300 |
| 38 | 7 × 2.6 | 7.8 | 1.4 | 11.0 | 0.502 | 14,500 | 410 | 300 |
| 60 | 19 × 2.0 | 10.0 | 1.4 | 13.0 | 0.313 | 23,600 | 630 | 300 |
| 100 | 19 × 2.6 | 13.0 | 1.5 | 16.0 | 0.185 | 39,300 | 1,030 | 300 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Package | Export wooden case & pallet |
| Coil Lengths | 300m (solid ≤5.309mm² + all stranded), 200m (solid ≥8.042mm²) |
| Roll Marking | Manufacturer, OW, 450/450V, KS 3331, conductor size (diameter or CSA), length, weight, batch |
| Insulation Colour | Black (weather-proof UV-resistant compound) |
| Outer Protection | Wooden case protects weather-proof PVC surface from transport abrasion |
| Delivery Condition | Factory-new, tested per KS 3331, KS mark certified, test certificate on request |
Typical Applications
OW wire is the standard outdoor electrical wire for Korean residential and light commercial installations — wherever the wire is exposed to weather without conduit protection:
Outdoor Residential Wiring
Open-air wiring on building exteriors, balconies, and outdoor walls in Korean residential construction where weather-proof insulation is required by code.
Direct Sunlight Exposure
Black UV-resistant PVC formulated for years of direct sunlight — unlike indoor PVC wire which embrittles and cracks within months of outdoor exposure.
Service Entrance Connections
Meter-to-consumer-unit outdoor wiring where weather-proof insulation eliminates the need for separate conduit in protected outdoor routing.
Overhead Span Wiring
Hard-drawn copper tensile strength (up to 39,300N) enables short outdoor spans without separate catenary wire — unique among single-core building wires.
Korean Market
KS 3331 certified — mandatory standard for outdoor weather-proof wiring in all Korean residential and commercial electrical installations.
Wet & Humid Environments
Weather-proof PVC compound resists moisture ingress and humidity degradation — suitable for tropical and monsoon climate outdoor installations.
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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.