4 Core Copper Flexible Rubber Sheathed Cable for Submersible Pumps (JHS / YC / YCW Waterproof Power Cable)

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.

1. Cable Structure (From Outside to Inside)

1. Outer Sheath – Yellow Rubber / PU Jacket

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

2. Filling Layer – Black Rubber Compound

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

3. Insulated Cores – 4 Independent Conductors

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

2. Core Function Configuration

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

3. Key Material and Technical Features

High-Elastic Rubber / Polyurethane (PU)

• Excellent flexibility

• مقاوم للماء (waterproof)

• Resistant to extreme temperatures

Fine-Stranded Copper Conductor

• High conductivity

• Low resistance loss

• Long bending life without breakage

Integrated Sealing Structure

• Tight bonding between sheath and filling

• Improved waterproof and durability performance

4. Main Advantages

1. Superior Waterproof Performance

Especially for JHS cables, designed for long-term underwater use.

2. High Flexibility

Ideal for dynamic applications and complex installations.

3. Strong Mechanical Protection

Thick sheath protects against:

• Abrasion

• Impact

• External stress

4. Excellent Aging Resistance

Maintains performance in outdoor and harsh environments.

5. Stable Power Transmission

Ensures reliable operation of pumps and motors.

5. Typical Applications

Widely used in:

• Submersible pumps (deep well, sewage pumps)

• Mining drainage systems

• Agricultural irrigation

• Construction sites

• Water conservancy projects

• Marine and underwater equipment

6. Difference Between JHS, YC, and YCW Cables

7. Conclusion

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.