/ 450/750V
Flexible PVC Insulated Building Wire
Model: BVR / H07V-K
Flexible PVC insulated building wire suitable for internal wiring, control panels, and applications requiring easy installation and bending.
- Voltage Rating
- 450/750V
- Number of Cores
- Array
- Cross Section
- 0.5–240 mm²
- Conductor
- Copper
- Armoring
- Unarmored
- MOQ
- ≥ 500 m
Downloads
Specifications
Technical Specifications & Performance
Construction
- Model / Series
- BVR / H07V-K
- Voltage Rating
- 450/750V
- Conductor Material
- Copper
- Conductor Class
- Class 1 Solid
- Cross Section
- 0.5–240 mm²
- Number of Cores
- Array
- Insulation
- PVC
- Sheath
- None
- Armoring
- Unarmored
- MOQ
- ≥ 500 m
Performance
- Max. Conductor Temp.
- 70°C
- Min. Bending Radius
- 6 × Cable Outer Diameter
About This Product
BVR / H07V-K Flexible Building Wire for Fixed Protected Installation
Flexible PVC Insulated Building Wire is a single-core, non-sheathed building wire with a fine-stranded flexible copper conductor and PVC insulation. In the Chinese market it is commonly specified as BVR: copper conductor, PVC insulated, flexible building wire. In IEC and European export projects the closest common designations are 60227 IEC 02 and H07V-K for 450/750V fixed wiring with Class 5 flexible conductor; smaller control and panel sizes may be specified as H05V-K at 300/500V.
This product sits between rigid building wire and general flexible panel wire. Compared with BV / H07V-U, BVR / H07V-K bends more easily through crowded conduit, distribution boards, meter boxes, and equipment enclosures. Compared with RVV / H05VV-F, it has no common sheath and is not intended to be used as a portable cord. The correct use is fixed, protected wiring: pulled through conduit, installed in trunking, routed inside switchboards, or used for building distribution where flexibility makes installation easier.
Jinda manufactures this family for global contractors, wholesalers, switchboard builders, and OEM project buyers. Typical standards include GB/T 5023.3, IEC 60227-3, EN 50525-2-31, and IEC 60228 Class 5. Standard supply covers common building-wire colours, printed legends, 100 m coils for distribution sizes, and drums for larger cross-sections. For projects where the words “flexible building wire” appear in the enquiry, the first technical check is whether the buyer means BVR / H07V-K single-core fixed wiring, not RVV sheathed flexible cord.
Wire Structure
Class 5 Copper Flexibility with Simple PVC Insulation
Flexible PVC insulated building wire has only two layers: a Class 5 flexible copper conductor and a PVC insulation layer. The surrounding conduit, trunking, or enclosure supplies the mechanical protection. This simple construction is why the wire is economical, easy to pull, and easy to terminate in fixed wiring systems.
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1
Conductor — IEC 60228 Class 5 Flexible Copper
Fine-stranded annealed copper conductor gives the wire its installation flexibility. It is easier to bend than BV / H07V-U solid building wire and easier to route through crowded distribution boards or short conduit runs. Bare copper is standard; tinned copper can be quoted for special equipment or humid-environment projects.
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2
Insulation — 70°C PVC Compound
PVC insulation provides electrical separation, colour identification, and ordinary flame-retardant performance for protected indoor fixed wiring. Standard conductor operating temperature is 70°C. Heat-resistant 90°C PVC or LSZH single-core alternatives should be specified when the project requires higher temperature or low-smoke halogen-free behaviour.
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3
Colour Coding — Building-Circuit Identification
Colours are selected by destination market and project rules. Green-yellow is reserved for protective earth where applicable; blue is commonly used for neutral in IEC markets; brown, black, grey, red, yellow, and other colours are supplied according to contractor drawings and distributor stock plans.
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4
No Outer Sheath — Use Only in Protected Routes
BVR / H07V-K is not a sheathed cable. It should be installed in conduit, trunking, distribution boards, panel ducts, equipment enclosures, or other protected systems. For exposed cable trays, outdoor runs, buried routes, portable cords, or moving equipment, choose a sheathed cable with the required mechanical and environmental rating.
Key Features
The Building-Wire Version of Class 5 Flexibility
BVR / H07V-K keeps the simple economics of single-core PVC building wire while adding the installation benefits of a flexible conductor. It is especially useful when rigid wire is difficult to pull, bend, or terminate neatly.
Easier Pulling and Routing Than BV
The Class 5 conductor makes BVR easier to pull through conduit bends and easier to dress inside switchboards than solid BV. It is a practical choice for renovation work, compact meter boxes, distribution boards, and installations with frequent direction changes.
450/750V Fixed-Wiring Rating
Mainstream BVR / 60227 IEC 02 / H07V-K is specified at 450/750V for low-voltage building and equipment wiring when installed in protected routes. H05V-K is available for smaller 300/500V wiring where that harmonised code is requested.
Colour-Coded for Site Installation
Red, yellow, blue, green, black, brown, grey, white, and green-yellow colours can be supplied for local wiring conventions. Clear colour planning is important because building projects often order many coils of the same cross-section in different circuit colours.
International Model Cross-Reference
China projects often write BVR. IEC projects may write 60227 IEC 02. European or harmonised purchasing lists often write H07V-K. All refer to the same basic idea: a single-core PVC insulated flexible conductor for protected fixed wiring.
Economical Alternative to Sheathed Cable
Where the installation already provides conduit or trunking protection, a single-core flexible building wire is often more economical and easier to manage than a multi-core sheathed cable. Each conductor can be pulled and identified separately.
Distributor-Friendly Packing
Common building sizes can be packed in 100 m coils or cartons with colour labels and metre marking. Larger sections are supplied on drums. Private-label printing is available for wholesalers and project distributors.
How to Choose
Six Checks Before Ordering BVR / H07V-K
Flexible building wire is easy to mis-specify because buyers use terms like flexible wire, panel wire, building wire, and PVC wire interchangeably. These six decisions keep the quotation aligned with the real installation.
Confirm fixed protected installation
Use BVR / H07V-K when the conductor will be fixed inside conduit, trunking, a distribution board, or equipment enclosure. Do not use it as an exposed flexible lead, extension cord, drag-chain cable, outdoor cable, or direct-burial cable. Flexibility here means easier installation, not dynamic service.
Choose BVR instead of BV when flexibility matters
BV / H07V-U uses a solid or rigid conductor and is economical for straight conduit runs. BVR / H07V-K costs more but is easier to pull, bend, and terminate in compact spaces. Choose BVR for short-radius routes, renovation jobs, densely packed distribution boards, and applications where installers need a more workable conductor.
Size the conductor by circuit design
Common project sizes include 1.5 mm² for lighting and controls, 2.5 mm² for many socket and branch circuits, 4 and 6 mm² for larger loads, and 10 mm² or above for distribution-board links and protective bonding. Final sizing must follow local code, load current, grouping, ambient temperature, voltage drop, and fault-loop requirements.
Define colour and quantity by circuit
Confirm the colour schedule before production. Green-yellow should be reserved for protective earth where applicable, blue is commonly neutral in IEC markets, and phase colours vary by country. Large building projects should order by size, colour, and floor or zone to simplify site distribution.
Specify the correct printed standard
China-market orders usually request BVR with GB/T 5023.3 or IEC 60227 marking. Export customers may request 60227 IEC 02 or H07V-K to EN 50525-2-31. For wholesalers, the sheath legend should match the market label and certificate package, not just the factory’s internal code.
Plan termination accessories
Because the conductor is Class 5 flexible, screw terminals often require bootlace ferrules or suitable crimp lugs. Confirm the ferrule style, lug type, and terminal compatibility during project design. Treating Class 5 conductor like solid BV at the terminal can create loose strands and unreliable connections.
Applications
Where Flexible Building Wire Is Better Than Rigid BV
BVR / H07V-K is selected when the project still needs single-core protected fixed wiring, but the installer needs a conductor that is easier to bend, pull, and terminate than solid building wire.
Distribution Boards & Meter Boxes
Flexible single cores for phase links, neutral links, protective earth conductors, and compact routing inside consumer units, sub-distribution boards, metering cabinets, and low-voltage panels.
Renovation and Retrofit Wiring
Useful when existing conduit has bends or limited pulling space. The flexible conductor can reduce installation difficulty compared with solid BV while still remaining a fixed protected wiring product.
Commercial Electrical Rooms
Branch-circuit and panel wiring in offices, hotels, retail spaces, schools, hospitals, and public buildings where conduit and trunking systems protect the conductors.
Equipment and Panel Internal Links
Short fixed links inside HVAC units, pump control boxes, elevator accessory panels, lighting control boxes, and equipment enclosures where a flexible single core simplifies assembly.
Not appropriate for: Portable appliance cords, extension leads, exposed outdoor runs, direct burial, cable chains, continuously moving equipment, fire-survival circuits, solar PV strings, data or signal transmission, and installations requiring a common outer sheath. For those applications choose RVV / H05VV-F, flexible control cable, rubber cable, LSZH wire, fire-resistant cable, or another purpose-built cable family.
Technical Data
BVR / 60227 IEC 02 / H07V-K Reference Range
Reference values for 450/750V flexible PVC insulated building wire with IEC 60228 Class 5 copper conductor. DC resistance values are IEC 60228 limits at 20°C. Final outer diameter and weight vary by standard, insulation thickness, colour, and factory drawing.
| Nominal Section | Common Model | Voltage Grade | Conductor Class | Max DC Resistance at 20°C | Typical Use |
|---|---|---|---|---|---|
| 1 x 1.5 mm² | BVR / 60227 IEC 02 / H07V-K | 450/750 V | Class 5 flexible copper | 13.3 Ω/km | Lighting, controls, panel links |
| 1 x 2.5 mm² | BVR / 60227 IEC 02 / H07V-K | 450/750 V | Class 5 flexible copper | 7.98 Ω/km | Socket branches, distribution boards |
| 1 x 4 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 4.95 Ω/km | Larger branch circuits |
| 1 x 6 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 3.30 Ω/km | Feeders, PE conductors |
| 1 x 10 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 1.91 Ω/km | Distribution-board links |
| 1 x 16 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 1.21 Ω/km | Main board links, bonding |
| 1 x 25 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 0.780 Ω/km | Large PE and equipment links |
| 1 x 35 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 0.554 Ω/km | Switchboard flexible links |
| 1 x 50 to 240 mm² | BVR / H07V-K | 450/750 V | Class 5 flexible copper | 0.386 to 0.0801 Ω/km | Large panels and bonding |
Resistance values are IEC 60228 Class 5 copper conductor limits at 20°C. Ampacity is not shown as a universal fixed value because current rating depends on conduit fill, grouping, ambient temperature, installation method, insulation temperature, and local electrical code.
Typical references: GB/T 5023.3, IEC 60227-3, 60227 IEC 02, EN 50525-2-31, IEC 60228 Class 5, and IEC 60332-1-2 where single-wire flame propagation testing is specified.
Comparison
BVR Is Flexible Building Wire, Not Flexible Cord
The word “flexible” creates confusion. In BVR / H07V-K, flexible means Class 5 conductor for easier fixed installation. It does not mean the wire is suitable for movement, exposure, or portable equipment.
| Attribute | BVR / H07V-K | BV / H07V-U | RV / H05V-K | RVV / H05VV-F |
|---|---|---|---|---|
| Construction | Single-core flexible PVC insulated building wire | Single-core rigid PVC insulated building wire | Single-core flexible PVC insulated wire | Multi-core PVC insulated and sheathed flexible cable |
| Conductor | Class 5 flexible copper | Class 1 solid copper | Class 5 flexible copper | Usually Class 5 flexible copper |
| Main use | Fixed building wiring where flexibility helps installation | Standard fixed building wiring | Panel wire, equipment internal wire | Indoor appliance cords and light flexible leads |
| Outer sheath | No | No | No | Yes |
| Typical voltage | 450/750 V | 450/750 V | 300/500 V or 450/750 V | 300/500 V |
| When to avoid | Exposed, moving, outdoor, or portable use | Tight routes needing Class 5 flexibility | Projects that specifically require building-wire marking | Single-core conduit wiring where sheath is unnecessary |
Choose BVR / H07V-K when
The project needs single-core fixed wiring but the route is too tight, dense, or awkward for solid BV. Distribution boards, meter boxes, retrofit conduit, and short equipment links are common examples.
Choose another product when
Choose BV / H07V-U for lower-cost rigid building wiring, RV / H05V-K for general panel wire, RVV / H05VV-F for indoor sheathed flexible leads, and rubber / PUR / LSZH / fire-resistant cable when the environment demands those properties.
Frequently Asked Questions
Common Questions About Flexible Building Wire
Is BVR the same as H07V-K?
They are equivalent in construction concept: single-core PVC insulated flexible copper conductor for protected fixed installation. BVR is the common Chinese designation, while H07V-K is the European harmonised designation for 450/750V Class 5 PVC insulated single-core wire. The exact printed marking and certification should match the destination market.
What is the difference between BV and BVR?
BV uses a solid or rigid conductor and is the standard low-cost building wire for fixed routes. BVR uses a fine-stranded flexible conductor, so it bends and routes more easily. BVR is useful in distribution boards, meter boxes, renovation conduit, and compact installations, but it may require ferrules or suitable lugs at terminals.
Can BVR be used as an extension cord?
No. BVR / H07V-K has no outer sheath and is not designed for portable cord use. For extension cords or appliance leads, choose a multi-core sheathed flexible cable such as RVV / H05VV-F for indoor ordinary use, or rubber cable for heavier outdoor service.
Does Class 5 flexibility mean it can move continuously?
No. Class 5 conductor means the wire is flexible enough for easier installation and termination. It does not make the wire suitable for cable chains, robot arms, moving gantries, or frequent bending in service. Dynamic motion requires a cable specifically designed and tested for repeated flexing.
Do I need ferrules for BVR / H07V-K?
In many screw terminals, yes. Ferrules or crimp lugs prevent strand damage and keep the conductor shape stable under terminal pressure. Always follow the terminal manufacturer’s instructions and the project standard. For high-current links, use correctly rated lugs and a calibrated crimping tool.
What information should I include in an enquiry?
Please provide model, voltage grade, cross-section, conductor material, colour list, quantity by colour, packing length, printed legend, certification standard, and destination market. A clear example is: BVR / H07V-K 1 x 4 mm², 450/750V, Class 5 bare copper, red / blue / green-yellow, 100 m coils, EN 50525-2-31 and IEC 60227 documents required.
Installation & Handling Tips
Six Practices for Reliable BVR / H07V-K Wiring
The main risk with flexible building wire is treating it like either solid BV or a portable flexible cord. The practices below keep the installation safe and inspectable.
Use ferrules or lugs where required
Fine strands should not be crushed directly under unsuitable screws. Use bootlace ferrules for terminal blocks or crimp lugs for larger links, following the terminal and lug manufacturer’s instructions.
Do not leave it exposed
BVR / H07V-K has no sheath. Every run should be protected by conduit, trunking, panel duct, an enclosure, or another approved wiring system. Exposed single-core runs are vulnerable to abrasion and accidental contact.
Apply conduit-fill and grouping derating
Flexible wire is easier to pull, but overfilled conduit still causes heat build-up and insulation stress. Follow local conduit-fill rules and derate current-carrying capacity for grouped circuits and high ambient temperatures.
Strip without cutting strands
Use a calibrated stripper for Class 5 conductor. Cutting even a small number of strands reduces effective cross-section and creates weak points near terminals. Inspect stripped ends before crimping.
Keep colour rules consistent
Do not mix colour conventions within one project. Reserve green-yellow for protective earth where applicable and follow the project drawings for neutral, phase, DC, and control colours. Correct colour stock prevents installation delays.
Avoid repeated bending after termination
BVR is flexible for installation, but repeated movement at a termination can fatigue strands. Provide strain relief, keep routes fixed after commissioning, and use a true flexible cable if the conductor will move in service.
Safety note: Final conductor size, current rating, conduit fill, colour coding, termination method, and protective-device coordination must follow the applicable national electrical code and project specification. Flexible building wire improves installation handling, but it does not remove the need for proper engineering calculation and inspection.
Manufacturing Capability
Why Source From Jinda Cable
Behind every drum we ship sits a 38-year track record, five production bases under one MES system, and a documentation discipline that gets cables through customs without delays.
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Every cable tested twice before shipping
Since 1987, our two-stage QC has been refined to a science: routine test on the production line, then full electrical and mechanical re-test before packing. Across 50+ export markets, our return rate stays under 0.3%.
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Five production bases, 470,000 m², synced via MES
Tianjin, Liaoning, Heilongjiang, Shandong, and Xian — each base runs under one unified MES system. Same recipe, same protocols, same traceability, regardless of which plant ships your order.
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3,000+ SKUs, custom configurations welcome
Standard sizes ship from inventory. Special voltage grades, color-coding, drum lengths, or armor configurations are routine — submit your spec and our team will quote the lead time honestly.
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Trusted by EPC contractors in 50+ countries
We supply utilities, mining operators, port authorities, and large industrial OEMs across Europe, the Americas, Southeast Asia, the Middle East, and Africa.
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Full paperwork shipped with every order
Every shipment includes factory test report, certificate of origin (COO), packing list, and bill of lading (B/L). Customer-nominated witness testing can be arranged before shipment.
Our Track Record
98.7%
On-time shipment rate (last 24 months)
< 0.3%
Return rate across export markets
25 days
Typical sea freight Tianjin → Rotterdam
100%
Shipments with routine test report attached
Logistics & Delivery
Packaging, Shipping & Documentation
What we handle on our side from production floor to the port of loading. Product-specific installation guidance is supplied with the datasheet that accompanies each order.
Packaging
- Wooden or steel drums per IEC 62004
- Coil packaging available for small cross-sections
- Standard drum lengths plus custom lengths on request
- Each drum labeled with type, voltage, cross-section, length, batch
- Waterproof wrapping for export shipments
- Cable ends sealed against moisture ingress
- Private-label / OEM packaging available under NDA
Shipping
- FCL / LCL sea freight, air freight on request
- Trade terms: EXW, FOB, CFR, CIF, DDP
- Ports of loading: Tianjin / Qingdao / Shanghai
- Typical sea freight to Rotterdam: 25 days
- Lead time confirmed at order acknowledgement
- Container loading photos sent before sailing
Documentation
- Factory routine test report (per applicable standard)
- Commercial invoice and packing list
- Certificate of origin (CO) — China Council, FORM A, FORM E available
- Bill of lading (B/L) — original or telex release
- Third-party inspection by SGS / BV / TÜV on request
- Customer-nominated witness testing arranged before shipment
Get in Touch
Request a Quote for
Flexible PVC Insulated Building Wire
What You'll Receive
- Technical quotation with itemized FOB / CIF pricing
- Sample factory test report from a previous shipment
- Realistic lead time including raw-material procurement
- Direct contact with the assigned sales engineer
Email
info@jindacablegroup.comResponse Time
Within 1 business day
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