Low Voltage Resin Cable Joint
uploaded by Chris Dodds Sales & Marketing Manager | Thorne & Derrick
Thorne & Derrick International are the UK distributors for Filoform, a leading manufacturer of cable joints, duct seals and special resins for installation in the utilities, telecom, traffic, rail, fibre optic, street lighting and construction industries.
In the following overview we explain what makes a good cable joint and via video demonstrate how to install Filoform resin cable joints.
Firstly, lets examine the kit contents of Filoform resin cable joints.
Cable Joints
Filoform cable joints are approved in accordance with the standard DIN EN 50393 VDE 0278-393:2015-10 – test methods and requirements for accessories for use on distribution cables of rated voltage 0,6/1,0 (1,2) kV. This European Standard details the performance requirements and the test methods for type testing of cable joints for use with power distribution cables of rated voltage 0,6/1,0 (1,2) kV as defined in HD 603 or other relevant cable standards.
Rigid and very strong snap-lock design forms an excellent seal and prevents resin leakage from the cable joint. Filform cable joints are designed and sized around UK manufactured steel wire armour cables (SWA) to BS5467 ensuring ample working-space for the jointer within the cable joint shell.
Transitions from PILC to XLPE, cross-core jointing and jointing of 3.3kV power cables can also be achieved with minor kit modifications.
Brass Tunnel Connectors
Brass tunnel connectors provide straight connections on stranded or solid circular conductors (both copper and aluminium). The range-taking tunnel connectors permit the jointing imperial to metric and step-down transitions where dissimilar size conductors preclude the use of conventional crimp connectors.
No specialist jointing tools – fast and simplified jointing of cable conductors without resort to crimping tools and associated die sets is achieved by Filoform brass tunnel connectors.
Two Allen screws for each core ensure a sound electrical performance and an Allen key is also provided with each resin joint kit to ensure that everything needed to joint a cable is included in the one box.
Armour Continuity Earth Braids
Tinned copper earth braid offers significant advantages over “single wire type” earth continuity systems in resin cable joint kits, which can fail if poorly positioned within wire armour cores that have “spread”. The flat, soft braid ensures good electrical contact and is insulated for extra protection – suitable for both wire braided and wire armoured cables.
Cable joints move and expand due to earth shift and heat from electrical current. Constant force springs react to this movement and maintain a sound electrical connection between the steel wire armouring and the earth continuity braid.
Constant Force Springs
Provide safe separation of cores and connectors within the resin joint.
Filoform cable joint resin formula is equally suitable for both LV and HV jointing applications and provides excellent adhesion to PVC, XLPE, polythene and paper cables. Supplied in “easy-mix” transparent 2 component bag.
Cable Joint Resins
Detailed, clear and concise cable jointing instruction sheets ensure there is no ambiguity about safe jointing procedures – less cable jointer error.
Cable Joints – prior to resin pour with steel wire armour continuity across the cable by flexible copper earth braid, conductors jointed with mechanical range-take connectors
Thorne & Derrick International distribute the complete range of Filoform Resin Cable Joints for low voltage power, control, pilot and telecoms cable jointing.
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
Jointer Training Course Accreditation – EUSR
LV Transition Polymetric (Wavecon) to PILCSTA
(3 Phase) Mains Cable Jointing Course (LV3)
Sustained Skills For Specialist Services
The provision of Jointer Training is a contentious topic in the UK Power Industry – standards are collapsing, craftmanship is devalued, pockets are hurting and an illusion clouds the market that some Trainers can wave a magic wand and create the perfect Jointer in 4 days.
OK, it’s not quite the Wild West but as a UK leading distributor of Jointing Equipment at Thorne & Derrick we hold a duty of responsibility to support the safe and reliable installation of these products by promoting excellent standards of workmanship.
Accredited training courses can protect power and people against the danger of fatal Volts.
This Jointer Training Course is written by and delivered on behalf of EUSKILLS. This organisation is an awarding body which works extensively with Distribution Network Operators and their associates.
EUSkills and partners have ascertained the correct level of training provision and agreed the standard across the Cable Jointing Industry.
Successful trainees receive Competence Cards detailing their skill set directly from EUSKILLS upon completion of the course. Backing from EUSkills gives clients confidence that their jointers will be trained up to the perfect standards as agreed across the board.
Delivered In Partnership With Energy Utility Skills
EUSKILLS mission is to make excellence the standard through trusted partnerships and ensure that the UK Utility Industry develops and retains a sustainable skilled workforce now and in the future – they are a provider of choice for employer solutions and registering and assessing competency standards within the energy, gas, waste management and water networks industries.
Training Course Duration 5 days
This Jointer Training course will enable a Jointer to confidently carry out a range of live low voltage electrical cable jointing procedures on underground cables in accordance with company procedures and to demonstrate a safety conscious approach to the control of hazards associated with the activity whilst working and communicating effectively with other team member to achieve tasks.
This course is designed to give existing jointers the, knowledge and understanding to fulfil the role as a Cable Jointer and to be able to make both transition straight and breeches joints using paper insulated lead covered steel tape armoured cables and subsequent electrical tests in a safe manner.
Jointer Training Course Aims
On successful completion of this course, delegates will be able to demonstrate and understand:
Jointer Training Course Content
The course includes the following:
The Jointer Training course will enable a Cable Jointer to:
Practical Work
Cable Jointer Training Courses – CONTACT US FOR FURTHER INFORMATION
Cable Jointers Assessment
The courses offered by Pragmatic Consulting are Jointer Training training assessments and not industry authorisations. Therefore, after the successful completion of the course and assessment the delegate will then need to complete a period of supervised work experience, before returning with his/her portfolio and undertake a formal cable jointing skills and knowledge assessment.
On successful completion of their assessment each candidate will then be eligible to have their achieved competence modules registered on the Energy and Utility Skills Register (EUSR) for acceptance as a level of competence by member Companies of the industries Competency Accord scheme.
This is done to preserve trade integrity and protect employers against under-skilled labour causing reputational damage to their industry.
Certificates
After successful completion of the Jointer Training course assessments and portfolio an EUSR Card will be issued.
Jointer Training Course Duration 5 days
Accreditation – EUSR Competency Accord Power Unit 060 – LV3
Pre-Requisites
This 5 day course is designed for existing jointers who have experience of Wavecon jointing and/or have completed Pragmatic Consulting Training’s LV2 jointing course and has or is in the process of taking a suitable electrical qualification i.e. C&G 2339 or equivalent.
Delegates to be assessed as competent in this skill area should have completed the modules shown below or have evidence demonstrating an equivalent level of competence.
Maximum Delegates: 8
Seaton Power Solutions work in partnership with training provider Pragmatic Consulting to meet the needs of the Utilities Industry.
With accredited courses in Construction, Water, Electrics, Health & Safety and specialised training for National Grid; clients are able to to fulfil their business opportunities with a properly qualified workforce.
Thorne & Derrick can support directly your MV HV Jointer Training requirements working in close partnership with UK Centres including Pfisterer CONNEX and Nexans Euromold – these training courses provide successful Jointers with Competency Certification issued by the manufacturer to cover the installation of their ranges of cable joints, terminations and connectors up to 66kV.
Medium & High Voltages | Nexans Training | Pfisterer Training
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
Jointer Training Course Accreditation – EUSR
LV Polymeric (Wavecon) Mains Cable
3 Phase Cable Jointing Course (LV2)
Sustained Skills For Specialist Services
The provision of Jointer Training is a contentious topic in the UK Power Industry – standards are collapsing, craftmanship is devalued, pockets are hurting and an illusion clouds the market that some Trainers can wave a magic wand and create the perfect Jointer in 4 days.
OK, it’s not quite the Wild West but as a UK leading distributor of Jointing Equipment at Thorne & Derrick we hold a duty of responsibility to support the safe and reliable installation of these products by promoting excellent standards of workmanship.
Accredited training courses can protect power and people against the danger of fatal Volts.
This Jointer Training Course is written by and delivered on behalf of EUSKILLS.
This organisation is an awarding body which works extensively with Distribution Network Operators and their associates.
EUSkills and partners have ascertained the correct level of training provision and agreed the standard across the Cable Jointing Industry.
Successful trainees receive Competence Cards detailing their skill set directly from EUSKILLS upon completion of the course. Backing from EUSkills gives clients confidence that their jointers will be trained up to the perfect standards as agreed across the board.
Delivered In Partnership With Energy Utility Skills
EUSKILLS mission is to make excellence the standard through trusted partnerships and ensure that the UK Utility Industry develops and retains a sustainable skilled workforce now and in the future – they are a provider of choice for employer solutions and registering and assessing competency standards within the energy, gas, waste management and water networks industries.
Training Course Duration 5 days
This Jointer Training course will enable a Jointer to confidently carry out a range of live low voltage electrical cable jointing procedures on underground cables in accordance with company procedures and to demonstrate a safety conscious approach to the control of hazards associated with the activity whilst working and communicating effectively with other team member to achieve tasks.
The course is designed to enable the delegate make Wavecon main straight and Breeches joints with both straight and crossed cores, make Wavecon pot ends with services and terminate a Wavecon cable into a pillar or cut-out, and subsequent electrical tests in a safe manner.
Jointer Training Course Aims
On successful completion of this course, delegates will be able to demonstrate and understand:
Jointer Training Course Content
The course includes the following:
The Jointer Training course will enable a Cable Jointer to:
Practical Work
Cable Jointer Training Courses – CONTACT US FOR FURTHER INFORMATION
Cable Jointers Assessment
After the successful completion of the Jointer Trainingcourse and assessment the delegate will then need to complete a period of supervised work experience, before returning with his/her portfolio to undertake a formal cable jointing skills and knowledge assessment. The courses offered are trainee assessments, not industry authorisations.
On successful completion of their assessment each candidate will then be eligible to have their achieved competence modules registered on the Energy and Utility Skills Register (EUSR) for acceptance as a level of competence by member Companies of the industries Competency Accord scheme.
This is done to preserve trade integrity and protect employers against under-skilled labour causing reputational damage to their industry.
Certificates
After successful completion of the Jointer Training course assessments and portfolio an EUSR Card will be issued.
Jointer Training Course Duration 5 days
Accreditation – EUSR Competency Accord Power Unit 060 – LV2
Pre-Requisites
This 5 day course is aimed at existing crafts persons and jointers mates who have previous electrical qualification or in the process of taking a suitable electrical qualification i.e. C&G 2339.
Delegates should have previous jointing experience e.g. LV1 and have taken or be in the process of taking a suitable electrical qualification i.e. C&G 2339
Delegates to be assessed as competent in this skill area should have completed the modules shown below or have evidence demonstrating an equivalent level of competence.
Maximum Delegates: 8
Seaton Power Solutions work in partnership with training provider Pragmatic Consulting to meet the needs of the Utilities Industry.
With accredited courses in Construction, Water, Electrics, Health & Safety and specialised training for National Grid; clients are able to to fulfil their business opportunities with a properly qualified workforce.
Thorne & Derrick can support directly your MV HV Jointer Training requirements working in close partnership with UK Centres including Pfisterer CONNEX and Nexans Euromold – these training courses provide successful Jointers with Competency Certification issued by the manufacturer to cover the installation of their ranges of cable joints, terminations and connectors up to 66kV.
Medium & High Voltages | Nexans Training | Pfisterer Training
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
Jointer Training Course Accreditation – EUSR
Introduction to Low Voltage Cable (Wavecon) Jointing
Single & Triple Phase Cable Jointing Services (LV1)
Sustained Skills For Specialist Services
The provision of Jointer Training is a contentious topic in the UK Power Industry – standards are collapsing, craftmanship is devalued, pockets are hurting and an illusion clouds the market that some Trainers can wave a magic wand and create the perfect Jointer in 4 days.
OK, it’s not quite the Wild West but as a UK leading distributor of Jointing Equipment at Thorne & Derrick we hold a duty of responsibility to support the safe and reliable installation of these products by promoting excellent standards of workmanship.
Accredited training courses can protect power and people against the danger of fatal Volts.
This Jointer Training Course is written by and delivered on behalf of EUSKILLS. This organisation is an awarding body which works extensively with Distribution Network Operators and their associates.
EUSkills and partners have ascertained the correct level of training provision and agreed the standard across the Cable Jointing Industry.
Successful trainees receive Competence Cards detailing their skill set directly from EUSKILLS upon completion of the course. Backing from EUSkills gives clients confidence that their jointers will be trained up to the perfect standards as agreed across the board.
Delivered In Partnership With Energy Utility Skills
EUSKILLS mission is to make excellence the standard through trusted partnerships and ensure that the UK Utility Industry develops and retains a sustainable skilled workforce now and in the future – they are a provider of choice for employer solutions and registering and assessing competency standards within the energy, gas, waste management and water networks industries.
Training Course Duration 5 days
This Jointer Training course is designed to give new jointers who may have limited experience; the knowledge and understanding to fulfil the role as a Low Voltage Service Cable Jointer. Technicians will learn to create single and triple phase sub-service cable joints using Wavecon Cables and to make both single and three phase service joints onto a Wavecon main cable in a safe manner.
Jointer Training Course Aims
On successful completion of this course, trainees will be able to demonstrate and understand:
Jointer Training Course Content
The course includes the following:
The Jointer Training course will enable a Cable Jointer to:
Practical Work
Cable Jointer Training Courses – CONTACT US FOR FURTHER INFORMATION
Cable Jointers Assessment
After the successful completion of the Jointer Training course and assessment the delegate will then need to complete a period of supervised work experience, before returning with his/her portfolio to undertake a formal cable jointing skills and knowledge assessment. The courses offered are trainee assessments, not industry authorisations.
On successful completion of their assessment each candidate will then be eligible to have their achieved competence modules registered on the Energy and Utility Skills Register (EUSR) for acceptance as a level of competence by member Companies of the industries Competency Accord scheme.
This is done to preserve trade integrity and protect employers against under-skilled labour causing reputational damage to their industry.
Certificates
After successful completion of the Jointer Training course assessments and portfolio an EUSR Card will be issued.
Jointer Training Course Duration 5 days
Accreditation – EUSR Competency Accord Power Unit 060 – LV1
Pre-Requisites
This 5 day course is aimed at an existing Crafts Person or Cable Jointers Mate who has a previous electrical qualification or is in the process of taking a suitable electrical qualification i.e. C&G 2339.
Delegates are not required to have any previous jointing experience but would benefit from prior electrical knowledge and numeracy experience to enable them to successfully complete the course.
Delegates to be assessed as competent in this skill area should have completed the modules shown below or have evidence demonstrating an equivalent level of competence.
Maximum Delegates 8
Seaton Power Solutions work in partnership with training provider Pragmatic Consulting to meet the needs of the Utilities Industry.
With accredited courses in Construction, Water, Electrics, Health & Safety and specialised training for National Grid; clients are able to to fulfil their business opportunities with a properly qualified workforce.
Thorne & Derrick can support directly your MV HV Jointer Training requirements working in close partnership with UK Centres including Pfisterer CONNEX and Nexans Euromold – these training courses provide successful Jointers with Competency Certification issued by the manufacturer to cover the installation of their ranges of cable joints, terminations and connectors up to 66kV.
Medium & High Voltages | Nexans Training | Pfisterer Training
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
Marconite – Electrically Conductive Aggregate Material
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Marconite, the low resistant earthing solution, combined with copper earth rods and copper lattice mats has been delivered from stock to provide essential earthing protection to vital S&T infrastructure on the Network Rail infrastructure in the UK.
Marconite, the electrically conductive aggregate material, conducts electricity much in the same way as metals, through the movement of electrons.
Traditional earthing materials, such as Bentonite, conduct electricity through the movement of charged ions. These ions require the presence of an effective electrolyte, such as water and the presence of salts. Unlike Marconite, ionic based systems are subject to drying out and without water they do not conduct electricity.
Bentonite
Marconite does not need water to conduct electricity and so does not suffer any effects from drying out.
Marconite is the world’s premium electrically conductive aggregate material. Used as a backfill to enhance the effects of earth electrodes, such as copper bond earth rods, Marconite enables electrical and civil engineers to achieve permanent, stable and low resistance earthing solutions, even in difficult ground conditions.
Specifically developed for the needs of the earthing industry, for over 40 years Marconite has allowed electrical engineers to tackle the toughest conditions and achieve the satisfactory earthing of installations throughout the world.
Marconite is a synthetic material manufactured specifically for use in earthing applications and, unlike Bentonite, it is not a naturally occurring mineral or ore.
Marconite has distinctive properties result from a unique manufacturing process, utilising specific raw material feedstocks, carefully selected and mixed in tightly controlled ratio’s before undergoing a range manufacturing process and thermal treatments.
The resulting product is a precisely measured, granular material, dark grey in colour, that is virtually dust free and with exceptional electrical properties. This is then packaged in high strength, UV resistant valve topped sacks and palletised.
Marconite is the low resistant building and substation earthing solution for rail projects.
Marconite Conductive Concrete is a registered product of the James Durrans Group and is solely produced by their subsidiary company Carbon International Limited. T&D provide fast delivery and competitive prices for genuine Marconite brand Earthing Products.
Contact T&D for Copper Earthing Tapes – Bare Tape & Covered
To complement Earthing & Lightning Protection products we stock and distribute the most extensive range of copper earthing equipment.
Thorne & Derrick – Stockists & Suppliers of MV HV Joints, Terminations & Connectors
Published 25 Mar 2026
klauke ekm60unv – universal cutting, crimping & punching tool The Klauke EKM 60 UNV is a versatile battery powered hydraulic universal tool engineered that can be used as a battery powered cable crimping tool and battery operated cable cutting tools that comes...
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...
