Jointers Blogs
220kV Land To Sea Cable Joint – Welded & Crimped
March 2nd, 2021
Pictured: 1600sqmm aluminium jointed to 1000sqmm copper conductors.
Tig and mig welded and crimped by Simon Chapman (Cable Jointer – Balfour Beatty).
We would be delighted to feature more photographs in our HV Jointing Gallery from cable jointers – please submit to [email protected] with brief description of image.
Further Reading
LS 220kV Cross Bonded Joint XLPE 2500sqmm Copper
220kV 2000sqmm Copper Enamelled Stranded Cable | Sandblasting by the Jointers

Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
110kV Prysmian Screen Break Cable Joint – EHV Extra High Voltage
March 2nd, 2021
By EHV Cable Jointer Andrew Brezovszky, Energex Australia.
Energex distribute electricity to more than 1.4 million residential, commercial and industrial customers across a population base of around 3.2 million in South East Queensland.


110kV Prysmian Screen Break EHV Extra High Voltage Cable Joint

Prysmian 110kV Screen Break Joint – landing the stress control joint mould onto 1600sqmm cable. An extraction tool is used to remove the pre-mould from the carrier tube.

Prysmian 110kV Screen Break Joint – an older style 110kV Prysmian screen break joint used on a super-sheathed cable (stainless steel corrugated sheath over the copper corrugated sheath).

Prysmian 110kV Screen Break Joint – completed 110kV super-sheathed XLPE cable with Prysmian screen break joints on paralleled feeders.

Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
Stringing 275kV (400kV) 3M ACCR Low-Sag Overhead Line (+Video)
March 2nd, 2021
Image Courtesy of: Tommy Edwards (Site Lead at AMEC FW).
Location: Scottish Power Energy Networks XY Route, Towers 04-47. Tower types are L2 L8.
“After 9 years I still have a real determination in making a long, safe and successful career in the overhead transmission and distribution industry.”
“The overhead line pictured below is twin conductor running 275kV but able to carry 400kV. The 3M ACCR Drake conductor leaves the high voltage substation at Kilmarnock South and spans approx. 15.5km terminating at Coylton, East Ayrshire,” says Tommy.

In the YouTube Video link above, 3M Product Specialist Colin McCullough discusses utility challenges and the 3M ACCR low-sag conductor.
To see accompanying images, view our Advanced Technologies in Composite Conductor Flickr Album.

Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
The Perfect 13.2kV Nub
February 8th, 2021
“We are trying to keep the craft in craftsmanship here at Tampa Electric Co. This high voltage cable nub was built by one of our apprentices. Not just anyone can be a cable splicer. You either have it or you don’t.” John McGaughan, Cable Systems Operations Specialist at TECO.
Tampa Electric USA has supplied the Tampa Bay area with electricity since 1899. Its West Central Florida service area covers 2,000 square miles, including all of Hillsborough County and parts of Polk, Pasco and Pinellas counties.

The company has 4,400 megawatts of generating capacity and over 667,000 residential, commercial and industrial customers that depend on Tampa Electric for reliable power and value-added energy services.

A high voltage 13.2kV nub or dead end on 750 MCM copper cable built to terminate a live end cable to terminate or splice in the future for network expansion. Note the apprentice signs and dates the lead work.

“I must agree with John McGaughan, we have to keep training the younger folks, it sometimes takes a while to find someone that has the “hands”, and the right attitude. Capping lead cables is a great start, learning the feel of the metal, and not the “fear” of the metal,” comments Douglas Page (EHV Jointer).

Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
400kV ODSE Terminations | Moray East by GCS & Sudkabel
January 21st, 2021
Thone & Derrick | Sudkabel Approved Distributor | Joints, Terminations & Connectors | Specification & Supply


Scaffolding by Lyndon SGB | The largest specialist scaffolding contractor in the UK providing temporary structures for substation sealing end works for over 40 years.
GCS Jointing
GCS Jointing is a trading name of Global Cabling Services Ltd and was founded in 2015 when Richard Mason (Director GCS Jointing – Global Cabling Services Ltd), decided to leave a major power utilities contractor after many years of quality service. Richard is an EHV Jointer with over 25 years of experience – with a practical approach to HV EHV projects the work GCS undertake is often installed and supervised on site by Richard personally. GCS Jointing is recognised as a specialist HV and EHV Cable Jointing and Cable Installation Sub-Contractor within the onshore and offshore utilities, oil-gas and clean energy industries.
The company is a family run business.
Contact GCS 01740 630694.
Project Portfolio
- Humber Gateway Onshore Land Joints 132kV
- Dudgeon Onshore Land Joints & Substation 132kV
- Wikenger Offshore Wind Farm 33kV
- Baltic 2 Offshore Substation & Terminations 33kV
- Rampion Onshore Test Plugs 132kV
- Hornsea01 Onshore Land Joints 220kV
- Blackhill Substation ODSE Terminations 132kV
- Dounreay Substation ODSE & GIS Terminations 275kV
- Walpole Substation ODSE & GIS Terminations 132kV
- Drakelow Substation ODSE Terminations 400kV
- Kensal Green Substation GIS Terminations 400kV


Thorne & Derrick are Specialist Distributors to the UK and international Offshore Wind & Renewable industry to provide safe and reliable LV HV Electrical Cable & Power Distribution Systems up to 66kV – we are highly customer responsive and absolutely committed to providing a world-class service.
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV

See how T&D support, supply and service the Renewable Energy industry.

MV HV Cables 11kV 33kV 66kV | Cable Joints, Terminations & Connections


