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 CategoriesDuct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder PillarsCable 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


Alroc Cable Jointing Tools Explained

Published 22 Jul 2026

Alroc Cable Jointing Tools Explained

Alroc cable jointing tools are specialist cable preparation tools used by cable jointers to strip, cut, remove, chamfer and prepare LV, MV, HV and EHV power cables before installing cable joints, terminations and connectors. In medium and high voltage cable systems, preparation accuracy is critical. Before an 11kV, 33kV,...

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Marconite Earthing Explained

Published 02 Jul 2026

Marconite Earthing Explained

Marconite earthing is used to help create low resistance, stable and long-lasting earthing systems by surrounding earth electrodes with an electrically conductive concrete. Marconite is a conductive aggregate that is mixed with cement and water to form a conductive concrete around earth rods, copper earth tapes, earth mats or...

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FP400 Cable Explained | Fire Resistant SWA

Published 02 Jul 2026

FP400 Cable Explained | Fire Resistant SWA

FP400 cable is a fire-resistant armoured power and control cable used where electrical circuits may need to maintain integrity during a fire. It is commonly specified for critical building services, fire performance circuits, public buildings, infrastructure projects and electrical systems where low smoke, low halogen and fire-resistant cable performance...

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Feeder Pillars Explained | LV Power Distribution

Published 01 Jul 2026

Feeder Pillars Explained | LV Power Distribution

A feeder pillar is an outdoor electrical cabinet used to house and protect low voltage power distribution, isolation, control and connection equipment. Feeder pillars are commonly installed in public spaces, highways, substations, street lighting networks, EV charging sites, industrial facilities, sports grounds, car parks and utility infrastructure. In simple...

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Cable Pulling Explained | LV MV HV Installation

Published 18 Jun 2026

Cable Pulling Explained | LV MV HV Installation

Cable pulling is the controlled process of installing electrical, power, telecoms or fibre optic cables into ducts, trenches, conduits, tunnels, cable troughs or containment systems. In LV, MV and HV power cable installations, cable pulling must be carefully planned to prevent damage to the cable sheath, insulation, conductor, screen...

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