YZ Rubber Sheathed Flexible for Construction Site Tools, Mobile Equipment,

The YZ-type cable is a classic, general-purpose, medium-duty flexible power cable featuring rubber insulation and a rubber sheath. Designed for frequently moved electrical equipment and temporary power supply systems, it has a rated voltage of AC 300/500V. This product belongs to the IEC 60245 rubber-insulated cable series; its designation clearly indicates its specifications: "Y" denotes rubber insulation, and "Z" signifies a medium-duty, flexible, mobile-use structure. This distinguishes it from the light-duty YQ rubber cable and the heavy-duty, water-resistant, and reinforced YZW rubber cable.

The conductor consists of ultra-fine, multi-strand annealed copper wire compliant with Class 5 flexible conductor standards. It features heat-resistant Ethylene Propylene Diene Monomer (EPDM) core insulation and an abrasion-resistant rubber compound outer sheath. Compared to standard flexible PVC cables (such as RVV or YJVR), YZ-type rubber cables offer superior performance in terms of resistance to mechanical drag and abrasion, oil and water splashes, low-temperature embrittlement, and fatigue from repeated bending, making them suitable for harsh construction sites, factory workshops, and outdoor temporary power applications.

This product series covers 2-core, 3-core, 4-core, and 5-core configurations, with conductor cross-sections ranging from 0.75mm² to 16mm². As a mainstream global standard for cabling, it is widely used in mobile power tools, portable machinery, temporary power distribution boxes, and mobile outdoor power supply systems, earning recognition from electrical designers, installation contractors, equipment manufacturers, and power rental companies.

• YZ (Standard Type, 300/500V): Medium-duty rubber cable suitable for indoor use and occasional outdoor environments involving dry conditions or splash risks; offers basic abrasion and oil resistance.
• YZW (Enhanced Weather-Resistant & Waterproof Grade): Features a specialized weather-resistant, ozone-resistant, and waterproof outer sheath; suitable for long-term outdoor exposure, immersion in rain, and wet open-air construction sites.

• Y: EPDM (Ethylene Propylene Diene Monomer) rubber insulation, offering excellent elasticity, heat resistance, ozone resistance, and flexural recovery.
• Z: Medium-duty portable flexible structure, designed for conditions involving frequent dragging, bending, and moderate mechanical compression.
• 300/500V: Rated voltage U₀/U = 300/500V; suitable for low-power portable electrical equipment, handheld power tools, and temporary branch power circuits.
• Core Specifications: 2×0.75mm², 3×1.5mm², 3×2.5mm², 4×4mm², 5×6mm², and other common multi-core combinations.

• GB/T 5013 series: National standard for general-purpose rubber-sheathed flexible cables
• IEC 60245: International standard for rubber-insulated cables with rated voltages up to and including 450/750 V
• IEC 60228: Specification for Class 5 flexible stranded copper conductors
• Standard routine factory tests: Conductor DC resistance test, withstand voltage test, insulation integrity test, sheath abrasion and aging tests, and low-temperature bending and toughness tests
• Comprehensive certification system: ISO 9001 Quality Management System certification, CE marking, third-party type test reports, and raw material incoming inspection documentation; fully compliant with requirements for international tender submissions, technical reviews, and project safety acceptance audits

Formed by stranding multiple ultra-fine annealed copper wires at an optimized lay pitch, creating a compact, round, and flexible conductor that meets Class 5 flexibility requirements. During frequent dragging, twisting, and bending, internal stress is evenly distributed, effectively preventing individual wire breakage and intermittent circuit faults. High-purity annealed copper ensures stable conductor DC resistance, limits temperature rise under continuous rated loads, and guarantees consistent crimping performance with plug terminals and cable connectors.

The insulation layer, made of extruded EPDM rubber with uniform thickness, offers excellent elasticity, heat resistance, and resistance to ozone-induced aging. It outperforms PVC insulation in terms of operating temperature range; it does not crack or harden after prolonged, repeated bending, effectively preventing electrical leakage and short circuits caused by fatigue damage to the insulation from frequent movement. The material exhibits stable dielectric properties and withstands exposure to minor oil splashes and chemical agents common in industrial workshop environments.

Fills the voids between insulated cores to maintain the cable's overall circular cross-section, cushions against mutual compression and friction during dragging and bending, and prevents the insulation layers of internal cores from scraping against one another. Additionally, it blocks moisture ingress and stabilizes the cable's roundness, facilitating plug assembly and routing operations.

The specially formulated medium-duty rubber sheath is a key feature of YZ-type cables, offering excellent tensile strength, resistance to abrasion and scuffing, moderate oil resistance, and good low-temperature flexibility. Designed to withstand repeated dragging across concrete, crushed stone, steel plating, and workshop floors, the sheath effectively prevents cracking and internal core damage caused by frequent on-site movement. Its balanced hardness strikes an ideal compromise between flexibility and mechanical protection, making it highly suitable for portable and mobile applications.

U₀/U: 300/500V AC (50Hz); specifically designed for low-power mobile electrical equipment and temporary branch distribution circuits.

• Core Configuration: 2, 3, 4, or 5 cores
• Nominal Cross-sectional Area: 0.75mm², 1.0mm², 1.5mm², 2.5mm², 4mm², 6mm², 10mm², 16mm²
• Conductor Standard: IEC 60228 Class 5 (finely stranded, flexible annealed copper conductor)

• Maximum continuous operating temperature of conductor: 60°C
• Minimum installation temperature (cold resistance): -20°C (no brittle cracking during low-temperature bending test)
• Short-circuit withstand temperature (≤5s): 200°C
• Design service life under standard usage and routine mobile conditions: ≥15 years
• Environmental resistance: Resistant to moderate lubricating oil splashes, dust, water splashes, and corrosion from weak acid/alkali mists

• Minimum dynamic bending radius (frequent movement): ≥12 × cable outer diameter
• Minimum static bending radius (fixed installation): ≥8 × cable outer diameter

Structural application limitations: Type YZ is a medium-duty mobile rubber-sheathed cable; it is not suitable for conditions involving prolonged heavy machinery crushing, deep direct burial, or long-term underwater submersion. For environments with prolonged exposure to outdoor rainfall, Type YZW is recommended.

Its continuous current-carrying capacity meets design requirements for handheld power tools, small mobile machinery, and temporary power distribution at construction sites. Its superior mechanical durability offsets the slightly higher material cost compared to standard flexible PVC cables, significantly reducing the frequency of cable replacement in construction and industrial environments involving frequent dragging.

Standard RVV flexible PVC cables are prone to cracking, hardening, and internal conductor breakage after frequent dragging and bending. In contrast, the YZ-type construction—featuring rubber insulation and a rubber sheath—retains its elasticity over the long term and withstands repeated bending fatigue. This reduces the risk of short circuits or open circuits in mobile equipment circuits, thereby enhancing the overall safety and stability of temporary power supply systems.

The specially formulated outer sheath withstands abrasion from rough construction surfaces, occasional hydraulic fluid or lubricant splashes in machining workshops, and the rigors of low-temperature construction environments. It is suitable for indoor workshops, semi-outdoor sheds, and intermittent outdoor temporary power applications, offering a broader range of environmental adaptability compared to standard flexible PVC cables.

The product offers a full range of core specifications and cross-sectional parameters—including validated current-carrying capacity tables, standardized bending radii, and industry-standard plug/terminal compatibility. Designers are spared the need for custom structural validation, thereby shortening cycles for drawing reviews, technical clarifications, and project approvals, while minimizing the risk of errors in selection calculations.

The circular outer profile meets installation requirements for standard cable glands, strain relief devices, and industrial plug assemblies. This facilitates easy winding on cable reels, retractable cabling, and connections to portable power boxes, perfectly aligning with the standardized configuration needs of temporary power projects.

For projects requiring long-term resistance to rain, UV radiation, and ozone, the YZW weather-resistant model serves as a direct upgrade to the standard Y-series. It complies with fire safety and acceptance standards for outdoor temporary power, long-term cabling at construction sites, and connections for open-air equipment.

Mainstream specifications (such as YZ-type cables in 2×1.5mm², 3×2.5mm², and 3×4mm² sizes) remain in continuous mass production, ensuring stable unit prices and predictable delivery schedules; procurement teams can accurately lock in budgets during the tender phase, thereby mitigating the impact of raw material price fluctuations.

Although the initial purchase cost is higher than that of equivalent RVV PVC flexible cables, superior abrasion resistance extends service life on construction sites and production lines, reducing expenses related to repurchasing, on-site replacement, and maintenance labor; over a 3-to-5-year period, the total cost of ownership is significantly lower than that of low-cost PVC cable solutions.

The rubber sheath is flexible and easy to strip, facilitating on-site plug wiring, cable reel handling, and temporary routing adjustments; installation is faster than with stiffer PVC cables, shortening the setup time for temporary power facilities and effectively controlling total labor costs for electrical subcontractors.

We maintain ready-made stock of commonly used small-to-medium cross-section YZ-type cables, supporting small-batch trial orders, urgent on-site replenishment, and rapid bulk shipments to prevent construction delays caused by cable supply issues.

Compatible with standard industrial plugs, cable reels, cable glands, junction boxes, and temporary power distribution box components—eliminating the need for custom terminals or connectors—thereby streamlining Bill of Materials (BOM) management, incoming material inspections, and warehouse inventory control for project procurement teams.

• Power supply cables for handheld electric drills, angle grinders, cutters, welding auxiliary tools, and various portable power tools in construction, decoration, and machinery maintenance sectors
• Cables for retractable cable reels and mobile temporary power distribution boxes, as well as temporary on-site power distribution branch lines for construction, roadworks, and municipal renovation projects
• Internal wiring and power connections for small mobile air compressors, water pumps, vibratory hammers, small concrete mixers, and other portable construction machinery
• Wiring for mobile conveyor equipment, mobile testing instruments, and portable inspection devices on production lines, in auto repair shops, and in equipment assembly workshops
• Wiring for mobile equipment in semi-damp indoor workshops and factories, as well as power cables for mobile material handling equipment in warehouses (suitable for environments with occasional oil splashes and dust)
• Temporary power layouts for equipment rental companies, temporary power for events and exhibitions, mobile power supply for trade shows, and mobile power distribution systems for field construction sites

Project Requirements: Installation of extensive temporary power cabling for interior renovation crews; cables are frequently dragged across concrete, rubble, and stair corners, making them prone to abrasion and damage; compliance with construction safety standards and a need to reduce costs associated with frequent cable replacement.

Solution Implemented: Bulk supply of YZ-type (medium-duty rubber-sheathed) flexible rubber cables in 3×2.5mm² and 2×1.5mm² specifications, totaling 34.7 km in length.

Project Outcomes: The rubber sheathing effectively withstood damage from ground friction, resulting in a 76% reduction in cable failure and replacement rates compared to the previously used RVV PVC wiring; the site achieved a 100% pass rate in electrical safety inspections; the contractor designated YZ-type cables as the standard for temporary power in subsequent renovation phases, significantly lowering long-term material maintenance costs.

Project Requirements: Rewiring of mobile pneumatic tools, portable welding equipment, and mobile inspection stations within the production workshop; the operating environment involves occasional exposure to cutting fluid and lubricating oil splashes, alongside frequent daily movement and dragging of cables; requirements included long-term operational stability and a reduction in equipment downtime caused by cable failures.

Solution Implemented: Supply of YZ-type rubber cables in 3×1.5mm² and 4×2.5mm² specifications, totaling 19.3 km in length.

Project Outcome: The cable's moderate oil resistance proved suitable for the workshop environment, where oil splashing occurs; during four years of continuous operation, no internal core breakage or sheath cracking occurred. Downtime due to electrical faults was reduced, enhancing production continuity, and the installation successfully passed annual factory electrical safety audits.

Project Requirements: Provision of temporary power for road cutters, vibratory rollers, portable water pumps, and on-site lighting equipment. The operating environment was semi-outdoor, involving significant day-night temperature fluctuations and cold-weather construction conditions. Compliance with strict safety acceptance standards set by the municipal construction authorities was required.

Solution Implemented: A total of 22.5 km of YZ-type rubber-sheathed cables in various specifications, with an upgrade to YZW-type cables for specific critical outdoor sections.

Project Outcome: Excellent low-temperature flexibility effectively prevented sheath embrittlement and cracking during cold seasons. The cable's structural design, offering medium-duty mechanical strength, withstood the rigors of dragging operations across complex terrain. The project successfully passed the municipal construction safety acceptance inspection, leading to a long-term framework procurement partnership between the contractor and our company for future temporary power projects in infrastructure construction.

Before selecting YZ-type cables, it is necessary to evaluate the actual operating current, frequency of movement, and installation environment (e.g., indoor use, intermittent outdoor exposure, oil splashes, low-temperature conditions) to determine whether the standard YZ cable or the upgraded YZW cable is appropriate. Our technical team offers free selection comparison reports to help you mitigate risks associated with insufficient current-carrying capacity while avoiding unnecessary procurement costs caused by over-specification.

When assembling industrial plugs and cable terminals, care must be taken to avoid damaging the fine internal copper strands during the stripping of the sheath or insulation. Prior to crimping, loose copper strands must be tightly twisted together to prevent individual wires from separating, which could lead to overheating or poor contact. Additionally, a strain relief device (such as a protective sleeve or locking mechanism) should be properly installed at the cable entry point of the plug to distribute tension and prevent the internal conductors from detaching at the terminal connection.

In applications involving frequent movement, ensure the bending radius is at least 12 times the cable's outer diameter. Avoid subjecting the cable to sharp-angle bends for extended periods, and prevent heavy vehicles from running over the cable or sharp rebar from directly crushing its surface, as this could cause localized sheath rupture and damage to the insulation layer.

Type YZ medium-duty rubber-sheathed cables are suitable only for intermittent outdoor use; for long-term outdoor exposure (involving UV radiation, rain, and ozone), Type YZW weather-resistant cables must be selected. These cables are not suitable for direct burial, prolonged total submersion in water, or conditions involving continuous crushing pressure from heavy machinery.

The operating ambient temperature range is -20°C to +60°C. Avoid laying cables near high-temperature heat sources—such as welding machines, exhaust pipes, or heating equipment—for extended periods, as this accelerates rubber aging and leads to premature performance degradation.

Cable reels should be stored in a well-ventilated, dry warehouse to prevent accelerated rubber aging caused by prolonged exposure to sunlight and rain. During loading, unloading, and transport, prevent severe impacts, crushing, or tipping of the reels to avoid defects that could impair performance, such as sheath scratches, deformation, or twisting of internal conductors.

All products are manufactured in strict accordance with GB/T 5013 and IEC 60245 international standards. We provide—free of charge—a complete package of factory qualification certificates, full type-test reports, routine resistance and withstand-voltage test records, third-party inspection reports, and editable technical data sheets. This documentation fully satisfies the requirements for document review, approval submissions, and construction safety acceptance in global tender projects involving temporary power supply and mobile equipment cabling.

For these medium-duty flexible cables, we utilize specially formulated rubber compounds and certified high-purity annealed copper rods. During critical production stages—such as stranding, rubber insulation extrusion, cabling, and sheathing—we employ real-time online monitoring for outer diameter and eccentricity. This ensures stable conductor resistance, uniform insulation thickness, and consistent wear and flex-fatigue resistance across batches, thereby minimizing the risk of rejection during on-site acceptance inspections for large-volume tender orders.

We offer services such as fixed-length cutting, custom core color coding, packaging on wooden or export-grade steel reels, and bulk configuration for various YZ models (covering diverse core counts and cross-sectional specifications). Additionally, we can manufacture YZW cables with superior weather resistance to meet the technical demands of outdoor projects.

With our in-house rubber cable production facility, we eliminate intermediary markups. We support small-batch sample trials for initial project qualification and prioritize production for large-volume orders. Ample stock of standard YZ specifications ensures rapid dispatch, meeting tight delivery schedules for temporary power projects.

Our team of expert cable engineers provides current-carrying capacity calculations, total cost-of-ownership (TCO) comparisons between YZ and RVV/YZW cables, optimization consulting for temporary power wiring, remote installation guidance, and systematic after-sales quality tracking. Backed by a formal, long-term product warranty, we fully alleviate technical and quality concerns for procurement and engineering teams after orders are placed.

We possess extensive experience in cross-border supply for overseas temporary power and equipment cabling projects. Backed by robust export packaging solutions, comprehensive customs documentation capabilities, and efficient global logistics channels, we maintain a consistent supply track record for construction projects, manufacturing plants, machinery rental operations, and infrastructure temporary power projects across Southeast Asia, Central Asia, Africa, the Middle East, and Latin America. Furthermore, we are well-versed in the specific regulatory requirements—including product inspections, safety certifications, and registration protocols—governing YZ-type mobile rubber-sheathed cables in various overseas markets.