COPPER MV-105 5kV-35kV

Copper MV-105 Cable is a specialized, medium-voltage (5kV to 35kV) electrical cable designed for high-capacity power distribution, distinguished by its superior 105°C continuous operating temperature rating. This high thermal rating allows it to handle higher ampacity loads than standard MV-90 cable. Built with robust XLPE or EPR insulation and crucial metallic shielding, MV-105 provides excellent resistance to electrical stress, moisture, oil, and UV radiation. It is widely used in demanding environments like industrial plants for main feeder lines, utility distribution, and for reliably powering large industrial motors in both outdoor and direct burial installations. Read our Copper MV-105 Buyers Guide.

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COPPER MV-105 5kV-35kV POWER CABLE

Copper MV-105 is a premium, shielded power cable engineered for primary distribution in heavy industrial, commercial, and utility environments. Rated from 5kV up to 35kV, this cable is distinguished by its 105°C continuous operating temperature rating, which allows for higher ampacity and greater resilience during emergency overloads compared to standard 90°C cables. The construction features a high-conductivity annealed copper conductor, a semi-conducting stress-control shield, and high-dielectric Tree-Retardant Cross-Linked Polyethylene (TR-XLPE) or EPR insulation. A helically applied copper tape shield provides 100% coverage for electrostatic discharge and grounding, all protected by a sunlight-resistant, flame-retardant PVC jacket. UL-listed for cable tray (TC-ER) use, Copper MV-105 is the industry standard for mission-critical power infrastructure.

Installation Note: Copper MV-105 requires precise handling during termination. Because copper is heavier than aluminum, ensure that all vertical runs in cable trays are supported with appropriate cable cleats to prevent conductor creep. The copper tape shield must be grounded—typically at one end for short runs or both ends for longer runs to mitigate circulating currents—using specialized medium-voltage termination kits. Always maintain the minimum bending radius of 12x the outer diameter to protect the integrity of the shielding tape and the TR-XLPE insulation.

Key Features
  • Superior Copper Conductivity: Utilizes soft-annealed copper conductors for maximum electrical efficiency and smaller overall cable diameters compared to aluminum.
  • 105°C Thermal Capacity: Rated for a continuous conductor temperature of 105°C, providing superior performance in high-ambient heat or heavy-load scenarios.
  • Effective Electrostatic Shielding: Features a 5-mil bare copper tape shield with a 12.5% overlap to ensure uniform electrical stress and safe grounding.
  • Advanced TR-XLPE/EPR Insulation: Specifically formulated to resist "water treeing" and electrical degradation in high-voltage subterranean or wet environments.
  • Tray Cable (TC-ER) Rated: Certified for use in cable trays and as an "Exposed Run" (in sizes 1/0 AWG and larger), simplifying industrial installations.
  • Triple-Extrusion Process: The conductor shield, insulation, and insulation shield are extruded simultaneously to prevent voids and contamination.
  • Rugged PVC Jacket: The outer jacket is oil, chemical, and sunlight resistant, meeting UL 1685 flame-spread requirements.
Common Applications
  • Data Center Primary Feeders: The preferred choice for high-reliability 5kV–35kV distribution in large-scale computing facilities.
  • Heavy Industrial Infrastructure: Powering large motors, pumps, and machinery in steel mills, paper plants, and automotive factories.
  • Petrochemical & Refinery Power: Ideal for power distribution in environments where high heat and chemical exposure are constant.
  • Substation Grid Interconnects: Routing high-voltage power from utility transformers to industrial distribution switchgear.
  • Institutional High-Voltage Loops: Providing primary power for hospital campuses, universities, and military installations.
  • Mining & Heavy Construction: Durable enough for the mechanical stresses of surface mining and massive infrastructure projects.
  • Renewable Energy Collection: Connecting solar combiner boxes or wind turbine towers to the main collection substation.

Resources & Guides

Category_Buying Guide
Copper MV-105: 5kV – 35kV Medium Voltage Power Cable
February 07, 2026
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