Mar. 29, 2026
In harsh working environments such as underwater operations, mining drainage, and agricultural irrigation, power cables must provide not only stable electrical performance but also excellent waterproofing, abrasion resistance, and mechanical strength.
The 4 core copper flexible rubber sheathed cable, commonly known as JHS submersible pump cable or YC/YCW heavy-duty rubber cable, is specifically designed to meet these demanding conditions.

The outer layer is made of thick-wall, მაღალი elasticity rubber or polyurethane (PU), typically in yellow color, which is a common identification for submersible and mining cables.
Functions:
Provides excellent waterproof performance
مقاوم للتآكل (abrasion-resistant) and tear-resistant
مقاوم للأشعة فوق البنفسجية (UV-resistant) and anti-aging
Protects internal cores from harsh environments
Inside the sheath, a black filling compound is used to fill the gaps between conductors.
Functions:
Fixes internal cores and prevents movement
Absorbs mechanical stress and vibration
Improves cable roundness and structural strength
Enhances water-blocking performance, preventing water ingress
The cable contains 4 insulated cores, each identified by different colors:
Red
Black
Blue
White
Conductor Structure:
Made of fine-stranded copper wires (flexible copper conductor)
Ensures high flexibility and bending resistance
Insulation Material:
Rubber or elastomer insulation
The 4-core design is typically used in three-phase power systems:
3 cores: Phase conductors (L1 / L2 / L3)
1 core: Ground or neutral (PE / N)
Suitable for 380V three-phase submersible pumps and motors
This configuration ensures:
Stable power transmission
Electrical safety through grounding
Efficient operation of industrial equipment
Excellent flexibility
مقاوم للماء (waterproof)
Resistant to extreme temperatures
High conductivity
Low resistance loss
Long bending life without breakage
Tight bonding between sheath and filling
Improved waterproof and durability performance
Especially for JHS cables, designed for long-term underwater use.
Ideal for dynamic applications and complex installations.
Thick sheath protects against:
Abrasion
Impact
External stress
Maintains performance in outdoor and harsh environments.
Ensures reliable operation of pumps and motors.
Widely used in:
Submersible pumps (deep well, sewage pumps)
Mining drainage systems
Agricultural irrigation
Construction sites
Water conservancy projects
Marine and underwater equipment
| Type | Features | Application |
|---|---|---|
| JHS | Fully waterproof, submersible | Long-term underwater use |
| YC | General heavy-duty rubber cable | Indoor or light-duty environments |
| YCW | Waterproof & weather-resistant | Outdoor and harsh environments |
The 4 core copper flexible rubber sheathed cable is an essential solution for waterproof, durable, and flexible power transmission. With its robust structure—featuring a yellow outer sheath, filling layer, and fine-stranded copper cores—it is perfectly suited for demanding environments such as submersible pump systems.
Whether you require JHS submersible cables or YC/YCW heavy-duty rubber cables, this type of cable ensures long service life, safety, and reliable performance in the most challenging conditions.