Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
H05V-R H07V-R PVC Insulated Building Wire
Conductor: Class 2 stranded copper, 7-61 wire concentric lay per EN 60228
Insulation: PVC, 0.6-2.6mm wall, 70°C continuous, 2,000V test
Bending: 4×D (≤6mm) / 6×D (6-12mm) / 8×D (>12mm), flex +5°C to +70°C
Range: 19 sizes 0.75-400mm², 100m/roll, 11-3,800 kg/km
Unique: Min insulation resistance @ 70°C column — critical for long conduit runs
Standard: EN 50525-2-31, BS EN 50525-2-31, HAR marked
Product Overview
H05V-R / H07V-R PVC Insulated Building Wire is a single-core Class 2 stranded copper conductor PVC insulated installation wire manufactured to the CENELEC harmonised standard EN 50525-2-31 and BS EN 50525-2-31. The -R suffix designates rigid stranded construction — 7-strand concentric lay for conductor sizes up to 25mm², 19-strand up to 95mm², 37-strand up to 185mm², and 61-strand for 240-400mm². This occupies the middle tier in the European harmonised wire strand flexibility spectrum: more flexible than solid -U wire (Class 1) but less flexible than -K wire (Class 5). H05V-R covers 0.75-1.5mm² at 300/500V; H07V-R covers 1.5-400mm² at 450/750V — the 1.5mm² cross-section being the overlap size available in both voltage classes.
The Class 2 7-strand construction gives H05V-R/H07V-R the ideal balance for conduit and trunking installations: flexible enough to pull through 90-degree conduit bends without kinking, yet structured enough to hold its shape on cable trays and ladder racks without sagging. The minimum bending radius of 4×D (≤6mm OD) to 8×D (>12mm OD) represents a graduated scale — small H05V-R signal wires (0.75mm², 2.8mm OD) bend to just 11mm radius, while the heavy 400mm² H07V-R (33.5mm OD) requires 268mm. The PVC insulation compound is rated 70°C continuous with a 2,000V test voltage and EN 60332-1-2 flame retardancy, with an operating range of +5°C to +70°C in motion and a 160°C/5s short-circuit withstand. Each roll is 100m with export wooden case and pallet — standardised packaging across the entire harmonised building wire product line.
H05V-R/H07V-R is the contractor-grade single-core installation wire for European commercial and industrial electrical projects. Unlike the solid -U wire which stays where it's terminated, and the -K flexible wire which routes through complex panel interiors, the -R stranded wire is the general-purpose workhorse — ordered by the reel for conduit pulls, cable tray runs, and equipment feeder connections where reliability and ease of installation matter more than extreme flexibility. The 7-strand concentric lay is the most cost-effective stranding pattern in the copper building wire market, offering better conductivity per kg of copper than Class 5 flexible due to the lower wire-drawing and stranding manufacturing cost.
Left Diagram — Solid Conductor (Reference):
Copper conductor — Single solid orange core — shown for comparison; H05V-R/H07V-R uses stranded (right)
PVC insulation — Blue outer ring, uniform wall thickness
Right Diagram — 7-Strand Conductor (The -R Product):
Copper conductor — Seven orange circular strands in hexagonal packing — this is the actual Class 2 stranded construction
PVC insulation — Blue outer ring, same compound and thickness as solid variant
Class 2 Stranded Copper
7-strand (≤25mm²), 19-strand (35-95mm²), 37-strand (120-185mm²), 61-strand (240-400mm²). Concentric lay per EN 60228. Cost-effective conductor for conduit pulls.
PVC Insulation 70°C
0.6-2.6mm wall by size. 70°C continuous, 160°C/5s short-circuit. 2,000V test. Flame retardant per EN 60332-1-2.
Two Voltage Tiers
H05V-R: 300/500V (0.75-1.5mm²). H07V-R: 450/750V (1.5-400mm²). 1.5mm² overlaps both — the transition size.
Graduated Bending: 4-8×D
4×D (≤6mm), 6×D (6-12mm), 8×D (>12mm). Less flexible than -K (4-6×D) but holds shape better on cable trays.
19 Sizes to 400mm²
0.75mm² (OD 2.8mm, 11 kg/km) to 400mm² (OD 33.5mm, 3,800 kg/km). Full range for signal to heavy power feeders.
Insulation Resistance Data
Unique among building wires: Min insulation resistance @ 70°C column — a critical spec for long conduit runs where leakage current matters.
Technical Characteristics
| H05V-R Nominal Voltage | 300/500V (0.75-1.0mm²) |
| H07V-R Nominal Voltage | 450/750V (1.5-400mm²) |
| Test Voltage | 2,000V AC |
| Temperature Range (in motion) | +5°C to +70°C |
| Short-Circuit Temperature | 160°C / max 5 seconds |
| Bending Radius — OD ≤ 6mm | 4 × outer diameter |
| Bending Radius — OD 6-12mm | 6 × outer diameter |
| Bending Radius — OD > 12mm | 8 × outer diameter |
Applicable Standards
| Standard | Scope |
|---|---|
| EN 50525-2-31 | CENELEC harmonised standard for single-core non-sheathed PVC insulated cables rated up to 450/750V. Primary standard covering H05V-R and H07V-R. |
| BS EN 50525-2-31 | British adoption — mandatory for UK market. BS mark required for installations under BS 7671 (IET Wiring Regulations). |
| EN 60228 | Conductor standard specifying Class 2 stranded construction — 7-strand to 61-strand concentric lay per cross-section. |
| EN 60332-1-2 | Single cable vertical flame test with 1kW flame. Fire safety requirement for all CENELEC harmonised installation wires. |
Harmonised Wire Trilogy — Complete Flexibility Spectrum
| Type | Stranding | Bending | Range | Use Case |
|---|---|---|---|---|
| H05V-U / H07V-U | Class 1 (solid, 1 wire) | 4×D | 0.5-10mm² | Fixed terminals — never moves after termination |
| H05V-R / H07V-R | Class 2 (stranded, 7-61 wires) | 4-8×D | 0.75-400mm² | Conduit pulls & cable trays — general purpose workhorse |
| H05V-K / H07V-K | Class 5 (flexible, 30-2,035 wires) | 4-6×D | 0.5-240mm² | Panel interiors — complex routing through switchgear |
Technical Specifications
Class 2 stranded plain copper per EN 60228. PVC insulation per EN 50525-2-31. Overall diameter given as maximum. Min insulation resistance measured at 70°C conductor temperature — a unique column among harmonised building wires, critical for long conduit runs. 19 sizes, 100m per roll, export wooden case.
| Type | Cross Section (mm²) | Conductor (No. × mm) | Insulation (mm) | OD Max (mm) | Insul. Res. 70°C (Ω/km) | Weight (kg/km) |
|---|---|---|---|---|---|---|
| H05V-R — 300/500V | ||||||
| H05V-R | 0.75 | 7 × 0.37* | 0.6 | 2.8 | 0.012 | 11 |
| H05V-R | 1.0 | 7 × 0.43 | 0.6 | 3.0 | — | 14 |
| H05V-R / H07V-R | 1.5 | 7 × 0.52 | 0.7 | 3.4 | 0.010 | 21 |
| H07V-R — 450/750V | ||||||
| H07V-R | 2.5 | 7 × 0.67 | 0.8 | 4.2 | 0.009 | 32 |
| H07V-R | 4 | 7 × 0.85 | 0.8 | 4.8 | 0.008 | 45 |
| H07V-R | 6 | 7 × 1.04 | 0.8 | 5.4 | 0.007 | 65 |
| H07V-R | 10 | 7 × 1.35 | 1.0 | 6.8 | 0.007 | 110 |
| H07V-R | 16 | 7 × 1.70 | 1.0 | 8.0 | 0.005 | 165 |
| H07V-R | 25 | 7 × 2.14 | 1.2 | 9.8 | 0.005 | 264 |
| H07V-R | 35 | 7 × 2.52 | 1.2 | 11.0 | 0.004 | 360 |
| H07V-R | 50 | 19 × 1.78 | 1.4 | 13.0 | 0.005 | 490 |
| H07V-R | 70 | 19 × 2.14 | 1.4 | 15.0 | 0.004 | 685 |
| H07V-R | 95 | 19 × 2.52 | 1.6 | 17.5 | 0.004 | 946 |
| H07V-R | 120 | 37 × 2.03 | 1.6 | 19.0 | 0.003 | 1,181 |
| H07V-R | 150 | 37 × 2.25 | 1.8 | 21.0 | 0.003 | 1,453 |
| H07V-R | 185 | 37 × 2.52 | 2.0 | 23.5 | 0.003 | 1,821 |
| H07V-R | 240 | 61 × 2.24 | 2.2 | 26.5 | 0.003 | 2,383 |
| H07V-R | 300 | 61 × 2.50 | 2.4 | 29.5 | 0.003 | 2,983 |
| H07V-R | 400 | 61 × 2.85 | 2.6 | 33.5 | 0.003 | 3,800 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Package | 100m per roll, export wooden case & pallet |
| Roll Marking | Manufacturer, H05V-R/H07V-R, voltage, cross-section, length, weight, batch, HAR/BS marks |
| Colour Options | Standard IEC 60446: blue, brown, black, grey, green/yellow, white, red |
| Outer Protection | Wooden case — identical packaging across all H05V/H07V series for mixed-order container loading |
| Delivery Condition | Factory-new, tested per EN 50525-2-31 / BS EN 50525-2-31 |
Typical Applications
H05V-R/H07V-R stranded wire is the general-purpose single-core building wire for European electrical contractors — the wire on every job site for conduit pulls, cable tray runs, and equipment connections:
Conduit & Trunking Pulls
Standard contractor-grade wire for pulling through conduit, trunking, and cable trays. Stranded construction pulls smoothly through 90° bends without kinking.
Equipment Feeders
Power feeder connections from distribution boards to motors, HVAC equipment, and industrial machinery. 16-400mm² range covers all building feeder sizes.
Lighting Circuit Wiring
1.5mm² and 2.5mm² H07V-R for domestic and commercial lighting circuits in conduit — the most common wire size on European building sites.
Panel Feeder Connections
Straight runs from circuit breakers to terminal blocks inside electrical panels where Class 2 stranded is easier to dress than solid wire.
EU / UK Building Projects
HAR mark + BS mark dual certification. Accepted across all CENELEC member states and the United Kingdom.
Insulation Resistance Critical
Unique 70°C insulation resistance data for long conduit runs where cumulative leakage current must be calculated per circuit design.
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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.