Image: SSE | Providing Safe Electrical Heat & Warmth in Hazardous Areas
uploaded by Chris Dodds | Sales & Marketing Manager with Thorne & Derrick International
Electric heaters forming part of the Electric Heater Schedule for the development and construction of Onshore and Offshore Wind Farms are generally located within the battery room section of medium/high voltage substations and manufactured from corrosion resistant materials to resist battery acids – heaters must be suitable for hazardous area locations with potentially explosive atmospheres as defined by the ATEX Directive.
Specific applications provide for the safe and reliable air warming and heating of Metering Rooms, Telecomm Rooms, Control Rooms, Pump Rooms, OFTO Stores (Offshore Transmission Owner) and WFO Stores. (Wind Farm Operator).
With typical heating loads of 0.2kW to 0.9kW and electrical supply 230/240V (Single Phase 50 Hz) there is a complete range of ATEX electric heaters are available for all applications.
âž¡ For further technical specifications, product details and commercial support please refer to EXHEAT FAW heater models.
Should you require assistance with the selection, specification or purchase of Electric Heaters suitable for power generation applications in the renewable industry sector please do not hesitate to contact Thorne & Derrick.
EXHEAT FAW | Heating LV MV HV Substations & Battery Rooms
Experts In Equipment for Explosive Atmospheres with ATEX & IECEx Certification
T&D are your first-choice provider of innovative and competitive solutions to ensure ATEX & IECEx Compliance for Low & High Voltage Hazardous Area Electrical, HVAC & Process Instrumentation Equipment to your UK and international projects.
Hazardous Area Substation Lighting ATEX Certified | Raytec
Arc Flash Hoods, Coveralls & Gloves
ProGARMÂ delivers ultimate Arc Flash clothing and protection, including Arc Flash Coveralls, and Arc flash Hoods conforming with the relevant industry and EN standards ensuring protection from Arc Flash incidents.
Specialists in Arc Flash ProtectionÂ
THE SPECIALIST CHOICE FOR ARC FLASH PROTECTION
ProGARM is the leading UK manufacturer of high-quality flame-resistant Arc Flash coveralls, garments and workwear – they work successfully with their UK Distributor Thorne & Derrick to save lives and reduce accidents.
ProGARM is the only UK manufacturer concentrating on and specialising 100% in Arc Flash protection and Flame Resistant garments for industry.
The dangers of Arc Flash incidents and the importance of protection from these hazards has never been as significant as it is today. This prominence will continue to increase over the next few years.
With multiple cable strikes every day in the UK and numerous major Arc Flash incidents, businesses are looking at how best to protect their team with the right Arc Flash and flame resistant garments. The correct clothing can significantly reduce injury and save lives.
ProGARM is committed to continual research and improvement to innovate and develop their range as quickly as possible to bring you the best Arc Flash protection for your team.
Arc Flash Hood: Product Launch From ProGARM
Thorne & Derrick are delighted to announce the launch of a brand new 47 cal/cm² Arc 4 Hood, manufactured by ProGARM, helping us to provide even more clothing solutions to reduce the risk of injury during an Arc Flash incident.
Due to the high risks involved when working in electrically high areas, the importance of adequate protection levels is vital in providing a suitable last line of defence.
The 9700 Arc Flash Hood is designed for use in close proximity to live electricity. This hood contains an anti-fog coated, transparent grey visor to keep vision as clear as possible when being worn. With a high quality and ultralight helmet, comfort is increased along with practicality; with seamless hood integration as well as a unique Velcro® brand fastener system for simple assembly and deconstruction.
The Arc Flash Rated Hood is designed to be used alongside your existing clothing systems to provide specialist protection when working with high incident energy levels.
Made from VXS+ inherent fabric, this Arc Flash Hood won’t lose it’s protective qualities, no matter how much you wash it.
ASSEMBLY
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The assembly of hood, visor and helmet has been tested to and certified to EN 166:2002, GS-ET-29:2011 (APC 2), and ASTM F2178-ATPV 47cal/cm². |
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FABRIC
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VXS+ Inherent special weave 395gms outer shell fabric with VXS+ inherent 200gms lining woven fabric, meeting the following standards:
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VISOR
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Premium anti-fog coated Highly Transparent Arc flash protective shield, colour grey, meeting the following standards:
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HELMET
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Manufactured from high quality strong ABS material, up to 20% lighter than most other helmets, features Dry-Tech sweatband for maximum comfort and an adjustable ratchet. Meeting the following standards:
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An electric arc occurs whenever a circuit breaker, switch or isolator (Device) is opened and when there is current flowing in the circuit. However, most devices under normal operating conditions are designed to control the arc when opening or closing.
An arc flash may occur when the arc is uncontrolled and there is sufficient energy released to cause harm or damage.
Arc flashes occur both at high voltage and low voltage. There is little discrimination: low voltage arc flashes injuries are just as damaging at high voltage injuries.
Put simply: An Arc Flash is the light and heat produced from an electrical arc supplied with sufficient energy to cause significant damage, fire or injury.
An Arc Flash can cause minor injuries, third-degree burns and potential death as well as other injuries including blindness, hearing loss, nerve damage and cardiac arrest. Fatal burns can occur when the victim is several feet from the arc. Serious burns are common at a distance of 10 feet – arc flash can generate heat 4 times greater than the surface of the sun.
The dangers of an Arc Flash
Thorne and Derrick are proud to be distributors of ProGARM arc flash coveralls and protection.
We can help – should you require arc flash calculators or advice on the type of clothing and protection available please do not hesitate to contact us.
Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – servicing businesses involved in cabling, jointing, substation earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the installation and maintenance of low/medium and high voltage power systems:
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 MVÂ
ULTIMA Connect At The London Olympics
Cubis systems were involved in the major project of the London 2012 Olympics site and stadium redevelopment.
The implementation of Cubis Access Chambers (in particular, the ULTIMA Connect) to assist with the redevelopment project resulted in huge savings in time and cost. The underground infrastructure was developed in time for the Olympics in 2012, and then updated and reconfigured for the future use of the site two years later.
The site has been massively transformed.
Today, East Bank is a new powerhouse for innovation, creativity and learning on Queen Elizabeth Olympic Park. It is a unique collaboration between world-leading universities, arts and culture institution that opens up opportunities for everyone who visits, lives and works in East London. The industrial land has been replaced with landscaped greenery; while the rivers and canals, previously derelict, are now dotted with tour boats and swan-shaped paddle boats.
Image by Gill Cooper from Pixabay
STAKKAbox™ ULTIMA Connect Access Chamber provides huge savings in time and cost
Project |
Queen Elizabeth Olympic Park Stadium Renovation |
Client |
London Legacy Development Corporation |
Contractor |
Balfour Beatty & PJ Carey (Groundworks) |
Products used |
STAKKAbox™ ULTIMA Connect |
Cubis supplied large chambers for turning of large high-voltage power cables in the build in time for the 2012 Olympic Games.
The chambers were designed and manufactured using the original ‘cut and bolt’ system to order, the largest being 6m x 3m x 3m (internal dimensions).
Two years after the games finished, the site was being re-configured for future use, which meant upgrading and diverting the buried infrastructure on site. Cubis were asked to supply a solution for two chambers that would be able to be retrofitted over the existing cable banks.
In order to meet the criteria, Cubis supplied the ULTIMA Connect system in flat-pack format for this project. Thanks to the component design, the chambers could be fabricated on site to build around the ducts. This was done by forming two ‘C shape’ chambers around the duct bank until it reached the depth that allowed the chamber to be built normally over the top.
Each installation took less than a day to complete, including the assembly and backfill. This was significantly faster than alternatives, while offering a flexible solution for benching over existing services and creating duct entries.
The redevelopment of the London Olympic East site now features a new tech cluster of start-ups, corporations, universities, venture capital investors and a huge new data centre. The buildings contain more than a million square feet of redeveloped space that was once home to BT Sport and other broadcasters during and after the London Olympics.
The redevelopment of the site by Laing O’Rourke Group for future use meant the upgrade of more high and low-voltage power supplies on site. Cubis were asked to supply a chamber system solution that could be quickly installed without the need for expensive trades. The use of the STAKKAbox™ ULTIMA Connect offered the customer the flexibility to build on site to bespoke dimensions. The flexibility of the flat-pack connect system was highlighted when the customers’ needs changed at the last minute due to the conditions on site with limited access. The connect system was able to be built and altered onsite for a quick turnaround for the customer and this resulted in the installation of 1 x 5m x 2m x 1.2 deep chamber and 1 x 2m x 2m x 0.9m deep chamber by two operatives in less than 3½ hours.
The significantly faster install time compared to alternatives lead to the order of more chambers by the contractor for further works.
Further Reading: Cubis Access Chambers VS Traditional Access Chambers
STAKKAbox™ chambers are significantly faster to install than conventional alternatives, with complete installations typically taking under one hour. This results in reduced costs for the installer and significant time saving. No specialist equipment or plant is required in order to install an access chamber and there is no need for specialist box builders. With flexible installation, cubis access chambers can be adapted to suit on-site conditions with standard tools to build over existing networks.
Cubis – Access Chambers, Access Covers, Cable Protection & Cable Accessories
LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK 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 HVÂ
Access Chamber Testing
The following Access Chamber test, performed by Cubis, has taken place in order to determine which Chamber Access method performs the best and can be installed the fastest – the time trial provides a comparison between conventional brick built and modern technology modular style access chambers.
Access Chamber Trial
| Brick Built Footway Access Chamber (traditional) | VSÂ | Â STAKKAbox™ Modula Access Chamber (Modern Alternative) |
Trial 1Brick Footway Access Chamber Internal Dimension: 600mm x 600mm External Dimension: 1030mm x 1030mm Depth: 460mm
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Trial 2STAKKAbox™ Modula Access chamber Internal Dimension: 600mm x 600mm External Dimension: 666mm x 666mm Depth: 900mm (Twice the depth of Brick Built Trial)
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Trial 1 CompleteBrick Footway Access Chamber Build Time: 2 hours 45 minutes Reinstatement: CAN NOT be completed same day Vertical Loading: Suitable for vehicular trafficking in pedestrian areas Achieved after 24 hours |
Trial 2 CompleteSTAKKAbox™ Modula Access chamber Build Time: 15 minutes Reinstatement: Completed within 15 minutes Vertical Loading: Suitable for vehicular trafficking in pedestrian areas Achieved immediately
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After testing, it can be concluded that the STAKKAbox™ Modula access chamber is significantly faster to install when compared to a traditional Brick Footway access chamber. This is also factoring in the depth of the the Modula access chamber, which is almost double that of the brick. The STAKKAbox™ Modula access chamber has been found to be suitable for vehicular trafficking in pedestrian areas, which is achieved immediately.
Further Reading: ULTIMA Connect At The London Olympics
STAKKAbox™ Chambers are significantly faster to install than conventional alternatives, with complete installations typically taking under one hour. This results in reduced costs for the installer and significant time saving. No specialist equipment or plant is required in order to install an access chamber and there is no need for specialist box builders. With flexible installation, Cubis access chambers can be adapted to suit on-site conditions with standard tools to build over existing networks.
Cubis – Access Chambers, Access Covers, Cable Protection & Cable Accessories
Press Release | Thorne & Derrick Appointed Approved Stockist for UK Leading Cable Pulling Equipment Manufacturer
LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK 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 HVÂ
Image:Â Stewart Cornelius (LV-HV Cable Jointer).
Pictured:Â 33kV Nexans Offshore Cable Terminations Into Ormazabal Switchgear Panel.
33kV Nexans Connectors are shown terminating 3 x XLPE insulated single core 300sqmm high voltage power cables. There are also pre-made VT leads in this Ormazabal panel located on a UK offshore wind farm.
Thorne & Derrick International, based in the UK, are Main Distributors for the complete range of Nexans Euromold Connectors, Joints and Terminations for medium voltage and high voltage cables up to 66kV.
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Contact us for Competitive Prices & Fast Delivery from Stocks for Heat Shrink, Cold Shrink & EPDM Rubber Connectors, Joints & Terminations up to 66kV.
Go to our Price List and contact us with your enquiries.
Heat Shrink Cable Accessories for 11kV Triplex Cables
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Accessories, Jointing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV.
Stocking & Supplying | Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Jointing Tools | Cable Pulling Eqpt | Earthing & Lightning Protection | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Euromold MV HV | Cable Terminations, Connectors, Elbows & Joints
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Published 18 Mar 2026
INDUSTRIAL LABEL PRINTING SOLUTIONS When clear, durable and professional identification is required across control panels, cable systems, production facilities and industrial installations, print quality, reliability and ease of use are critical. Cembre industrial label printers are designed to support...
Published 18 Mar 2026
HIGH VOLTAGE JUNCTION BOXES & ENCLOSURES When high-voltage power distribution and cable termination are required, safety, enclosure integrity and long-term reliability are critical. HV Junction Boxes and Electrical Enclosures manufactured by Abtech are engineered for the safe distribution, cable termination and protection...
