Archive: Sep 2025

Medium Voltage EPR Cables: What Electrical Distributors Need to Know

While low-voltage and high-voltage cables each serve specific roles in power delivery, medium-voltage (MV) cables fill the critical gap in between. These cables deliver power from substations to commercial, industrial, and data center applications with efficiency, safety, and reliability.

In this post, we’ll break down what medium-voltage cables are, where they’re used, and why Classic Wire & Cable is a trusted partner for your MV cable needs.

What Is Medium Voltage EPR Cable?

Medium-voltage cables are designed to operate at voltages between 1 kV and 35 kV and are commonly used to distribute power in a wide range of environments. Classic Wire & Cable’s MV cables are constructed with copper conductors, ethylene propylene rubber (EPR) insulation, and polyvinyl chloride (PVC) jackets.

This cable construction is engineered for long-term reliability, reduced maintenance, and consistent performance across a variety of applications. It’s especially well-suited for direct burial or conduit installations in commercial and industrial settings. Here’s how each component of medium-voltage EPR cable supports long-term performance:

  • Copper conductors. Copper remains the industry standard for high-conductivity, low-resistance cable cores. The material provides excellent electrical performance and mechanical strength, particularly in demanding industrial or utility settings.
  • EPR insulation. Ethylene propylene rubber is known for its flexibility, thermal stability, and strong resistance to partial discharge. These properties make it ideal for installations that may require tight bends or exposure to moisture, chemicals, and varying temperatures. EPR also provides outstanding electrical insulation performance, supporting system longevity.
  • PVC jackets. A durable polyvinyl chloride outer jacket adds a layer of protection against environmental hazards. PVC resists UV rays, moisture, and mechanical damage, so the material is suitable for both aboveground and underground installations.

Benefits of Medium Voltage EPR Cables

Medium-voltage EPR cables offer a range of performance and operational benefits that are essential for efficient power distribution. The following advantages translate into better system performance, lower total cost of ownership, and safer operation for end-users:

  • Efficient power transmission. MV cables handle higher voltages with minimal voltage drop, ideal for moving power over moderate distances.
  • Increased reliability. Durable construction resists damage from environmental and mechanical stress, resulting in fewer outages and maintenance needs.
  • Enhanced safety. MV cable shielding helps protect nearby systems and personnel by confining the electric field and safely conducting fault currents.

Markets That Use Medium Voltage EPR Cables

The flexibility and power capacity of medium-voltage EPR cables make them a staple across a wide variety of sectors. Common use cases include:

  • Utilities and power distribution. MV cables serve as the final step in delivering power from substations to neighborhoods, businesses, and infrastructure.
  • Industrial facilities. Manufacturing plants, mining operations, and refineries rely on MV cables to operate large motors, pumps, and process equipment.
  • Commercial buildings. Hospitals, data centers, airports, and universities use MV cables for distributing power throughout large campuses and complexes.
  • Data centers. With large power demands and uptime expectations, MV cables ensure stable energy delivery to mission-critical servers.

Trust Classic Wire & Cable for Top-Quality Medium Voltage EPR Cables

When it comes to sourcing medium-voltage cables, electrical distributors need a partner who understands the stakes. Classic Wire & Cable delivers premium-quality medium-voltage EPR cables that are UL-listed and designed to meet the toughest application requirements:

Each cable is built for reliable performance, safety, long-term durability, and simplified distribution. Whether you’re supplying a utility, outfitting a commercial complex, or delivering products to a renewable energy project, Classic Wire & Cable ensures you have access to the right MV cables on time and on spec.

Medium Voltage EPR Cables From Classic Wire & Cable

Medium-voltage EPR cables are a critical component of modern power systems. For electrical distributors, understanding the features, benefits, and market applications of their products opens up new opportunities for growth and value-added services. Classic Wire & Cable is a trusted distributor of high-quality wire and cable solutions. Our value-added services include paralleling, pulling eyes, custom cuts, and same-day shipping from our strategically located distribution facilities throughout the U.S.
Ready to explore our line of medium-voltage solutions? Contact us today or request a quote to get started.