HV & LV Cable Jointing Services

Powertek Utilities provides specialist cable jointing, termination and network energisation services for low-voltage (LV), high-voltage (HV) and extra high-voltage (EHV) electricity networks throughout the UK. Our qualified engineers support utility providers, developers and infrastructure organisations with safe, reliable electrical connections.

Connecting Your Infrastructure

Support for New and Existing Networks

Whether connecting a new development, extending an existing network, or upgrading infrastructure, Powertek delivers the cable jointing services needed to support safe, reliable electricity distribution. Our engineers work to industry standards and network operator requirements, ensuring quality at every stage of the project lifecycle.

Alongside new installations, we provide fault-finding and repair services to help restore existing networks and minimise disruption when problems occur.

Our Capabilities

Connections, Jointing and Terminations

We support electricity network connections, upgrades and reinforcement projects for residential, commercial and industrial developments throughout the UK.

01

Service Connections

Connecting new electricity supplies to existing networks. Our service jointing supports residential, commercial and industrial developments, providing reliable power connections for end users.
02

LV Mains Jointing

Extending and reinforcing low-voltage networks to support new developments, infrastructure projects and network upgrade programmes.
03

Link Box Installation

Installing and maintaining link boxes that provide isolation, separation and operational flexibility across low-voltage electricity networks.
04

HV & EHV Jointing

Specialist jointing and termination services for HV and EHV networks, supporting new installations, asset replacement and infrastructure upgrades.

Testing & Inspection

Checking Cable and Network Integrity

Our testing and inspection services help verify network integrity, support commissioning activities and identify potential issues before they impact operational performance.

  • Very Low Frequency (VLF) testing
  • Insulation resistance testing
  • Time Domain Reflectometry (TDR)
  • High-voltage pressure testing
  • Sheath testing
  • Impedance testing
  • Cross-talk and attenuation testing
  • Mutual capacitance testing

Fault Location & Repair

When a cable fault occurs, rapid diagnosis is essential. Our engineers use specialist diagnostic equipment to accurately identify fault locations and carry out repairs that help restore network performance with minimal disruption.

Network Energisation

Powertek carries out energisation works for new and upgraded electrical connections, ensuring systems are commissioned safely and efficiently. Continuous training from network operators and manufacturers enables our teams to work confidently across a wide range of network environments.

Related Services

Support for Your Wider Project

Explore Powertek's related services, including cable installation, civil engineering, ICP services and multi-utility infrastructure solutions.

Talk to Powertek

Discuss Your Cable Jointing Project

Whether you need a new connection, network upgrade, cable jointing services or fault repairs, contact our team to discuss your requirements and learn how Powertek can help deliver your project.