Based in Kent | Working Nationwide
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HV Cable Jointing HV Cable Terminations HV Substation Services Testing & Commissioning HV Fault Repairs Cable Damage Repair LV Cable Jointing SAP Services EVC Feeder Pillar Connections
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LV to 33kV: Complete Service Range

Our Services

R&D Cable Jointing delivers LV, 11kV and 33kV cable jointing and associated HV services for utilities, ICPs, IDNOs, civil contractors, renewables and infrastructure projects across the UK.

01

HV Cable Jointing

11kV and 33kV cable jointing, straight joints, transitional joints and terminations. Planned programmes, diversions and reactive works across the UK.

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02

11kV Cable Jointing

Specialist 11kV jointing for DNO distribution networks, ICP connections, private HV networks and renewables. Cold shrink, heat shrink and push-on systems.

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03

33kV Cable Jointing

33kV jointing and terminations for renewables, primary network connections and large infrastructure projects. Tighter controls, delivered without drama.

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04

HV Cable Terminations

Indoor and outdoor HV cable terminations up to 33kV, into switchgear, transformers, RMUs and busbars. Clean preparation, correct stress control.

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05

HV Substation Services

Full substation installation and fit-out to DNO/IDNO specification, earthing, small power, LV STC panels, CT wiring and connection day management.

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06

HV Testing & Commissioning

Pre-energisation testing, sheath integrity testing, DNO adoption support and energisation day attendance. Defect rectification available same day.

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07

HV Fault Repairs

Reactive HV cable fault repairs at 11kV and 33kV. Failed joint replacement and cable section repair, delivered efficiently once a fault position is confirmed.

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08

Cable Damage Repair

Repair of struck cables, failed joints, mechanical damage and cable section replacement on LV, 11kV and 33kV networks. Fast mobilisation, correct materials on site.

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09

LV Cable Jointing

LV cable jointing, MSDB installation, lateral cables, service and cutout terminations. Delivered standalone or alongside HV scope on the same programme.

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10

SAP Services

Senior Authorised Person up to 33kV: Permits to Work, switching, isolation and re-energisation. In-house, so no separate contractor coordination required.

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11

EVC Feeder Pillar Connections

LV and HV jointing for EV charging infrastructure, kerb-side connected charging, EV hub substations, fleet depot electrification and MSA charging.

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12

Commercial EV Charging Infrastructure

LV feeder pillars, 11kV substation installation and HV cable jointing for commercial EV charging, car parks, housing developers, fleet depots and hospitality venues.

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How we work

Prepared teams. Consistent standards. No shortcuts.

R&D Cable Jointing is a small, specialist contractor, you deal with David and Ricki, the founders, not an account manager. Every job gets the same attention regardless of size.

We review scope upfront, align RAMS with your site requirements, follow manufacturer procedures throughout and stay engaged until the job is properly complete.

Scope review

Drawings, cable types, access, outage windows reviewed before mobilisation

RAMS alignment

Method statements aligned to your site rules, permits and programme

Controlled installation

Manufacturer procedures followed, clean handling and consistent build-up

Inspection and readiness

Records completed, ready for test team and DNO audit

Clear close-out

Sign-off support, snag resolution and handover

Ready to discuss your project?

Send us the scope, voltage, cable type and location and we'll come back with availability and a clear plan.