Blog

Thorne & Derrick’s POWER Blog is regularly updated with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.

➡ View T&D’s brochure – contact our Sales Team with your requirements.

We focus on 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 

We provide guidance and technical support for the installation of LV, MV & HV Cable Joints, Terminations, Substation & Electrical Equipment from our Key Suppliers including:

3M CMP Ellis Patents
Nexans Euromold Elastimold Pfisterer
Prysmian Alroc CSD
Roxtec CATU Electrical Cembre
Lucy Zodion ABB Emtelle

MV HV Cables 11kV 33kV

With Photo Blog contributions from our social network of utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.

JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR ♦ CABLE ♦ SPLICE ♦ INSULATE


Cable Sheath Damage: Repair Sleeve or Cable Joint?

Published 16 Oct 2026

Cable Sheath Damage: Repair Sleeve or Cable Joint?

Cable Sheath Damage: Repair Sleeve or Cable Joint? Cable sheath damage is the cutting, abrasion, puncturing or deterioration of a power cable’s outer protective covering. Depending on the extent of the damage, the cable construction and the condition of its internal components, a damaged cable may require a heat...

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Hydraulic vs Ratchet Cable Cutters: What’s the Difference?

Published 15 Oct 2026

Hydraulic vs Ratchet Cable Cutters: What’s the Difference?

Hydraulic and ratchet cable cutters are specialist tools used to cut electrical power cables, conductors and associated cable materials during installation, jointing, maintenance and repair. Although both are designed to produce controlled cuts, they differ in the way cutting force is generated, the level of manual effort required and...

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Cable Bending Radius Explained: Minimum Radius & Installation Risks

Published 15 Oct 2026

Cable Bending Radius Explained: Minimum Radius & Installation Risks

Cable bending radius is the minimum radius to which an electrical cable can be bent without risking damage to its construction or compromising its intended performance. It is an important consideration when installing LV, MV and HV power cables through underground ducts, trenches, substations, cable trays and other electrical...

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Why Do Underground Cable Joints Fail?

Published 15 Oct 2026

Why Do Underground Cable Joints Fail?

Underground cable joints fail when their electrical insulation, conductor connections or protective sealing systems can no longer perform their intended function. Common causes include moisture ingress, incorrect cable preparation, insulation damage, poor conductor connections, excessive electrical stress and unsuitable installation conditions. Although underground power cables are designed for long-term...

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Charlie & Ella Complete Sales Apprenticeships

Published 02 Sep 2026

Charlie & Ella Complete Sales Apprenticeships

Celebrating Charlie & Ella’s Level 4 Sales Executive Apprenticeships At Thorne & Derrick International, we are proud to champion talent development and recognise the dedication required to achieve professional growth. We are therefore delighted to congratulate Charlie Baines and Ella Bradley, who have both successfully completed their Level 4...

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