Thorne & Derrick’s POWER Blog is regularly updated with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
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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 |
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
Published 23 Jul 2026
Cable trough is a protective cable containment system used to route, support and protect power, signalling, telecoms, control and communications cables above ground or at shallow depth. Cable troughing is commonly used across railways, substations, highways, utilities, industrial sites, renewable energy projects and electrical infrastructure. In simple terms, a...
Published 23 Jul 2026
Cable glands are mechanical cable entry devices used to secure, seal and protect cables where they enter electrical equipment, enclosures, junction boxes, control panels, motors, switchgear, lighting, instrumentation and hazardous area equipment. In simple terms, a cable gland provides a controlled entry point for the cable. Depending on the...
Published 23 Jul 2026
Surface tracking is an electrical insulation failure process where leakage current forms a conductive path across the surface of an insulating material. In MV and HV cable systems, surface tracking is most commonly discussed around cable terminations, where electrical stress, moisture, contamination and poor installation conditions can create a...
Published 23 Jul 2026
Trefoil cable formation is an installation method where three single core power cables are arranged together in a triangular, shamrock-style formation. Each cable normally represents one phase of a three-phase electrical circuit, and the three cables are held together using trefoil cable cleats or cable clamps. Trefoil formation is...
Published 23 Jul 2026
Earth mats, earth tape and portable earthing devices all form part of electrical earthing and safety systems, but they are not the same thing. Some are permanent components buried or fixed into an earthing system, while others are temporary safety devices used during maintenance, isolation and work on electrical...
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