33kV Cable Jointing Contractors UK | R&D Cable Jointing Ltd
Based in Kent — Working Nationwide
33kV HV Cable Jointing Specialists

33kV Cable Jointing

33kV cable jointing for renewables, infrastructure and primary network connections across the UK. Tighter controls, higher consequence — we integrate with your programme and deliver without drama.

R&D Cable Jointing provides 33kV cable jointing for renewables, infrastructure and private networks across the UK. We support planned programmes and repair works with site-ready delivery, manufacturer procedure compliance, and clear coordination with your project team. Based in Kent and working nationwide, we regularly support projects across London, Kent, Hertfordshire, Surrey, Suffolk, Cambridgeshire and Bedfordshire.

33kV Jointing for Renewables and Critical Infrastructure

33kV systems typically come with tighter controls, higher consequence and more coordination across civils, cable routes, substations and commissioning. We integrate with your programme and focus on safe, clean workmanship delivered without drama.

  • 33kV straight joints — XLPE insulated cables, cold shrink and push-on systems
  • 33kV fault repairs — joint failure and cable section replacement
  • Indoor and outdoor 33kV terminations
  • New 33kV circuits and connections for solar farms, wind, BESS and grid infrastructure
  • Multi-phase build and phased energisation support
  • Testing and commissioning coordination

Sectors We Support at 33kV

Our 33kV jointing experience covers a range of sectors and network types:

  • Solar farms and ground-mounted PV — inter-array cables and grid connection points
  • Battery Energy Storage Systems (BESS) — HV connections and substation interfaces
  • Wind energy — onshore connection infrastructure
  • Grid infrastructure and primary network reinforcement
  • Industrial and commercial private 33kV networks
  • Data centre HV infrastructure

How We Deliver 33kV Cable Jointing

  1. Scope confirmation — cable type, joint type, location constraints and outage windows confirmed upfront.
  2. RAMS and controls — method statements aligned to your permits, site rules and working arrangements.
  3. Controlled jointing — manufacturer procedures followed, consistent build-up and clean handling throughout.
  4. Checks and readiness — jointing records completed, testing coordination and energisation support where required.
  5. Clear handover — sign-off support and snag close-out.

Areas: Essex, London, Kent, Hertfordshire, Surrey, Suffolk, Cambridgeshire, Bedfordshire and nationwide. Contact us with your programme dates and location and we will confirm availability.

Frequently Asked Questions

What areas do you cover?
Based in the South East (Kent), we work nationwide across the UK. We regularly support projects across Essex, London, Kent, Hertfordshire, Surrey, Suffolk, Cambridgeshire and Bedfordshire, and travel further for larger projects.
What voltages can you work with?
LV, 11kV and 33kV. Our SAP authorisations cover up to 33kV for switching, permits and live working supervision.
What types of cable do you joint?
PILC, XLPE, Waveform and other common LV/HV cable types. If you're unsure whether we can handle your cable type, just ask.
Can you handle full substation installations?
Yes. We handle everything from landing, earthing and fit-out through to testing, commissioning, DNO audit attendance and taking control of the LV network on connection day on behalf of the IDNO.
What's the difference between a jointer and a SAP?
A jointer physically installs and connects cables. A Senior Authorised Person (SAP) issues permits and ensures the system is safe to work on. We provide both in-house.
Can you supply materials or work labour-only?
Both. We're happy to supply jointing kits and accessories, or to work with your own supplied materials — whatever suits the job.
How do I get a quote?
Email info@rdjointing.co.uk with your scope, cable type, voltage and location. We'll come back quickly with availability and a clear plan.

33kV jointing on your programme?

Send over the scope, location and programme dates and we'll come back with availability.