YC Heavy-Duty Rubber-Sheathed Flexible Cable 450/750 V
YC-450/750V
The heavy-duty rubber sheathed cable that Chinese plant drawings specify for mobile equipment and site power.
Rubber Flexible Cable & Welding Cable
Rubber does what PVC cannot. A PVC-sheathed cable stiffens below 0 °C and cracks after a season of ozone exposure; an elastomeric sheath stays workable from −25 °C to +60 °C, absor
Rubber does what PVC cannot. A PVC-sheathed cable stiffens below 0 °C and cracks after a season of ozone exposure; an elastomeric sheath stays workable from −25 °C to +60 °C, absorbs the tug of a hand-held tool, and survives the sparks at a welding clamp. The trade is that rubber compound costs more per metre and has to be specified by compound type, not only by size.
The range divides by duty and by code system. YC and YZ are the Chinese heavy and medium duty rubber-sheathed cables of JB/T 8735.2, and H07RN-F is the harmonised HD 22 equivalent that European buyers put on their enquiries. YH serves the welding machine, where current density rather than voltage sets the size. Voltcore runs them all on lines that extrude EPR insulation under a PCP or CPE sheath, and will change the compound to suit the oil or the ozone in your application.
5 constructions in Rubber Flexible Cable & Welding Cable
H07RN-F Harmonised Rubber Cable
H07RN-F-450/750V
The harmonised 450/750 V rubber cable European enquiries write by name, produced to HD 22 and CE marked.
YZ Medium-Duty Rubber Flexible Cable 300/500 V
YZ-300/500V
The 300/500 V rubber cord that follows a portable tool around a workshop and survives being trodden on.
YH Single-Core DC Welding Machine Cable
YH-10-185
A Class 6 copper conductor under one thick rubber covering, sized for the current the machine puts out.
YCW Weather & UV-Resistant Heavy Rubber Cable
YCW-450/750V
The heavy-duty rubber cable with a UV-stabilised CPE sheath, for plant that lives outdoors and never gets put away.
H07RN-F or YC: harmonised code or Chinese code
Both describe a 450/750 V flexible rubber cable with EPR-type insulation and an elastomeric sheath, and on a drawing they can look interchangeable. The differences are in the standard they are tested to and the temperature and flexing figures that standard demands. H07RN-F is an HD 22.4 / DIN VDE 0282-4 harmonised code; YC is produced to JB/T 8735.2 and GB/T 5013.
For a European project the harmonised code is what the specifier writes, and the H07RN-F designation carries the 450/750 V rating and the −25 °C to +60 °C service range with it. For a Chinese-designed plant or an IEC-aligned project in Africa or Southeast Asia, YC is the code on the drawing. Voltcore supplies both from the same production base and marks the sheath with the code the order needs.
- European and HD 22 projects: specify H07RN-F
- Chinese and GB/T projects: specify YC
- Both are 450/750 V with Class 5 copper
- Name the sheath compound in the enquiry: PCP, CPE or EPR
Reading a rubber cable's bending radius and flex duty
Every rubber cable carries a minimum bending radius, and the number is only useful next to the duty. A fixed installation clipped along a wall uses the static figure. A cable on a festoon, a reel or a drag chain uses the moving figure, and that one determines whether the conductor fatigue-cracks in six months or in five years.
The practical check is stranding. Class 5 to IEC 60228 is the floor for flexible handling; the lay length of the strands matters as much as their count, because a long lay puts more strain on each wire at every bend. Voltcore will shorten the lay on a construction that has to run over a sheave, and will specify a separator tape over the conductor so the insulation does not key into the strands.
- State static or moving duty, and the radius as a multiple of overall diameter
- Give the cycle rate: bends per hour and metres per minute
- Name the surface it is dragged over: steel, concrete, or a trough
- Ask for a short lay where the cable runs over a sheave or onto a reel
Why a welding cable is sized by current, not by voltage
An arc welding secondary runs at a low voltage — often under 100 V — but at several hundred amps, and it does so in short duty cycles with the cable being dragged across a steel plate. Voltage rating is almost irrelevant to the size; current carrying capacity and mechanical survival are everything. That is why a welding lead is a Class 6 conductor under a single thick rubber covering, with no separate insulation layer to trap heat.
Class 6 stranding to IEC 60228 uses finer wires and a higher count than Class 5, which is what gives the lead its limpness in the hand. Cross-sections from 10 mm² to 120 mm² cover the range from a portable 160 A set to a 600 A industrial machine, and the length matters: a 30 m lead at 300 A needs the next size up to keep the arc stable at the electrode.
- Size on the machine's maximum output current, not its voltage
- Add cross-section for every 15 m of lead beyond the machine's standard length
- Class 6 stranding gives the limp handling a welder expects
- A single rubber covering is correct for a welding lead; it is not an insulated power cable
Request pricing across Rubber Flexible Cable & Welding Cable
Include cross-section, core count, voltage grade, route length and installation method — those five determine price more than anything else on the page.
- Engineer-reviewed before pricing
- Reference drawings issued with the quotation
- Free sample up to free sample up to 5 m