Termination & Testing
Briggs Marine provides specialist high voltage cable services for offshore and onshore energy infrastructure. Our HV engineers support installation, testing, diagnostics and maintenance activities across renewable energy, utilities and industrial power systems.
Offshore Wind HV Services
Supporting offshore wind developers and asset owners, Briggs Marine delivers a range of cable testing, jointing and termination services for 33kV and 66kV systems.
Offshore Capabilities
- Cable Preventative Maintenance & Monitoring
- Cable fault locating and analysis
- HV cable terminations
- HV cable jointing
- Fibre terminations and OTDR testing
- HV cable testing
- TDR testing
- LIRA analysis
- Phase resistance testing
- Insulation resistance testing
- VLF, Partial Discharge and Tan Delta testing
- Cable routing and cleating
- Hang-off clamp installation
- Client representative services
- Cable storage testing
Onshore HV Services
Our onshore HV specialists support electrical infrastructure projects throughout the UK, including utility networks, renewable energy developments, for example BESS and Solar, as well as industrial facilities.
Onshore Capabilities
- LV jointing and terminating
- 11kV and 33kV jointing and terminating
- Cable fault locating
- Fibre terminations and OTDR testing
- HV cable testing
- Sheath testing
- DC pressure testing
- Earth resistance testing
- TDR and LIRA testing
Industries We Support
Briggs Marine supports developers, DNOs, utilities, principal contractors and asset owners across a broad range of sectors.
Key Sectors
- Offshore Wind Farms
- Onshore Wind Farms
- Battery Energy Storage Systems (BESS)
- Solar Farms
- Utility Networks
- Electrical Transmission Infrastructure
- Renewable Energy Developments
- Industrial Power Systems
Fibre Optic Testing & Communications Infrastructure
In addition to HV cable services, Briggs Marine provides specialist fibre optic testing, termination and diagnostic services that support modern energy and communications infrastructure.
Fibre Services
- Fibre terminations
- Fibre optic testing
- OTDR singlemode testing
- OTDR multimode testing
- Fusion splicing
Specialist Testing & Diagnostics
Using calibrated equipment and experienced technicians, Briggs Marine helps clients identify faults, assess cable condition and reduce network downtime.
Why Choose Briggs Marine?
- Offshore and onshore capability
- Integrated marine, subsea and engineering expertise
- Experienced HV test engineers and cable jointers
- Rapid mobilisation capability
- Strong track record supporting DNO and renewable energy projects
- Contact Person
Craig English
Director of Subsea and Environmental Services
- Email[email protected]
- Make an Enquiry
Related Links

HV Services
For further enquiries please get in touch using the form or alternatively the contact details below.
Service Enquiry Form
"(Required)" indicates required fields
- Contact Person
Craig English
Director of Subsea and Environmental Services
- Email[email protected]
- Make an Enquiry
