Cable Joints & Terminations LV
Insulation Piercing Connectors LV for Low Voltage Live Working & Cable Jointing
July 27th, 2022Thorne & Derrick | Approved Pfisterer Supplier | UK & Export Sales
Insulation piercing connectors LV
Safe & Easy Live Line Working at Low Voltage Networks & Cables
Live line working is increasingly essential in low voltage networks. Bolted connectors used for this purpose should be easy to install and ensure the best possible occupational safety. The LV piercing connector family from PFISTERER has been developed to meet today’s practical requirements. Durable contacts come as standard, and have been a PFISTERER core competence for nearly 100 years.
Conductor does not have to be stripped
Insulation piercing connectors connect and make electrical contact with conductor ends, whatever the conductor cross-section, type and insulation. Because they pierce the insulation during installation, preparatory work on the conductor, such as stripping or brushing the contact area, is eliminated when live working.
The shear bolts on insulation piercing connectors LV are based on patented SICON technology. The electrical connector bolts are equipped with a piercing system that reliably penetrates the conductor insulation during installation by the cable jointer. A rotatable disc at the base of the bolt prevents damage to individual strands and ensures the correct contact force for all conductor materials.

New installations or repairs LV piercing connectors easily and safely connect all low voltage cables – even under voltage
Good occupational safety
The insulating body and plastic cover caps provide IP2X protection against finger contact in accordance with EN 60529. On type 3 and above, plastic flaps prevent inadvertent contact with the inside of the conductor channel. The elastomer insert ensures protection against contact after the bolts shear off.
Low shear off torque
The shear off bolts are tightened using standard tools. Once the optimal contact force is reached, the bolt gently breaks away at a torque of between 2.5 and 27 Nm, depending on the type. This prevents common installation errors and makes live line working much safer.
Compact and well designed
Once installed, the small size of LV piercing connectors makes subsequent work easier. Compact cable joints with cast resin mean that fewer resources are needed for the final installation. The connectors can be placed close to each other without any further accessories.
Type 1 and 2 are equipped with a push together system: multiple connectors can be joined together to form a compact unit. With type 3 to 5, the elimination of the cover caps ensures the smallest possible dimensions.
Connector Benefits
- Insulation does not have to be stripped from individual conductors
- Easy, safe installation – ideal for live line working
- Shear-off bolts prevent installation errors
- IP2X protection against electrical hazards
- Consistent operational reliability, according to IEC 61238-1 Class A
- Compact design – less cast resin when jointing cables
- Creepage distance conform to EN 60664, Pollution Degree 1
LV Piercing Connectors In Figures
- Voltage: up to 1 kV
- Conductor cross-section: 1 to 240 mm²
- Conductor category: class 1 and 2
- Shear torque: 2.5 to 27 Nm
Further Reading
- ISICOMPACT from PFISTERER | Branch Terminals for LV Cables & House Service Connections
- 2DIREKT from PFISTERER | Cable Connections & Terminal Clamps for Transformer Bushings & Busbars
THORNE & DERRICK
Thorne & Derrick stock and distribute PFISTERER CONNEX Connectors for medium / high voltage cable connection and termination to electrical systems up to 33kV – we provide competitive prices for PFISTERER CONNEX connectors used to terminate and connect polymeric insulated MV-HV cables into gas insulated switchgear and electrical equipment from extensive UK stocks.
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 cable systems:
- Slip-on Cable Terminations
- Cold-shrink Cable Terminations
- Heat-shrink Cable Terminations
- Cable Joints – Heat & Cold-shrink
- Separable Connectors (Euromold)
- Surge Arresters & Switchgear/Transformer Bushings
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 MV

The SEANEX inner cone solution is an offshore variant of the successful Connex HV connection system that is specially adapted for 66kV inter-array cabling.

MV Connex Products | Ex Stock Thorne & Derrick | Inner Cone Cable Connectors 33kV
ISICOMPACT from PFISTERER | Branch Terminals for LV Cables & House Service Connections
July 27th, 2022
ISICOMPACT – Tap Connector for Low-Voltage Networks
Thorne & Derrick | Approved Pfisterer Supplier | UK & Export Sales
ISICOMPACT from PFISTERER
Branch Terminals for LV Cables & House Service Connections
Practical installation, good occupational safety and high levels of operational reliability are fundamental criteria for home power connections. ISICOMPACT by PFISTERER – the inventor of multi-conductor cable branch technology is the perfect solution.
With the invention of the compact screw terminal in 1968, PFISTERER set the standard in house connection technology. Well over 20 million SCK have been installed since then. Fast forward 30 years and the time had come for further development – ISICOMPACT technology.
The ISICOMPACT establishes all contacts for a 4-conductor cable branch using a single screw connection. When the screw connection is tightened, contact is established by piercing the insulation on the main line and branch lines.
Once the required clamping force has been achieved, the screw shears off and thereby ensures successful installation. By providing protection against contact and thus against electrical hazards, the ISICOMPACT is designed for live line work.
It is currently the only cable tap connector that also meets the strict requirements of BSI 862 – a German approval that enables a process for live line work without additional PPE and requires LLW electricians to undergo special training and the LV power network provider to be approved.
Six screws become ONE
ISICOMPACT reliably creates a branch connection from the supply cable to the end customer with just one screw. This simplifies and speeds up installation.
Where as conventional “clamping rings” have at least six screws, one or more of which are usually poorly accessible, the single screw on the ISICOMPACT can be placed on the cable to suit conditions, and conveniently tightened from above or from the side.
Simple & safe installation
Tightening the screw establishes all conductor contacts reliably and safely to form the cable branch. Insulation does not have to be removed from the conductor; contacts are established by piercing the insulation.
Spring pressure plates on both sides of the clamp ensure permanent contact force. The design and installation sequence ensure protection against contact with live parts throughout all work steps.
Live line working
Providing shock-proof protection against electrical hazards, ISICOMPACT is designed for live line working. The “green” version ISICOMPACT plus is the only cable tap connector approved by employer’s liability insurance association BG ETEM for live line work without additional PPE. It meets the strict requirements of DGUV Information 203-031 (formerly BGI 862).

ISICOMPACT – Reliable home connection with just one screw
High flexibility
Compared to conventional cable tap connectors, ISICOMPACT offers significantly larger clamping ranges and high flexibility in use. Altogether there are two standard sizes and seven variants. ISICOMPACT multi combines the S, M and 3 1/2 variants in one product.
As a result, electricians are equipped for all eventualities. At the same time, the smaller number of variants reduces the risk of using the wrong type and cuts inventory costs.
Unique shear-off technology
ISICOMPACT features a specially developed shear nut which performs two tasks during fitting. It defines the installation end-point and minimises the clamp’s dimensions. Once the optimal contact force is reached, the shear nut operates and the protruding section of the screw breaks away burr-free. Subsequently, ISICOMPACT fits into all commercially available cast resin joints.

Currently used by all major energy suppliers. ISICOMPACT cable branch technology
Everything from a single source
Clamping ring and cast resin joints from the inventor of multi-conductor cable branch technology. As a contact technology specialist and solution-oriented system provider, PFISTERER offers a wide selection of cast resin joints to complement the ISICOMPACT connection system, as well as complete matching sets comprising a cast resin joint and the cable tap connector. Our proven two-component cast resins with excellent flow characteristics are available in tins or in a practical two-chamber bag.
ISICOMPACT Benefits
- No stripping of conductors
- Insulation does not have to be removed from the conductor
- Shock-proof protection against electrical hazards
- One-Screw solution with defined shear torque
- Consistent operational reliability, tested to DIN VDE 0220 part 3
- Reduced range of variants due to large area of application
- Ideal for live line work
ISICOMPACT in Numbers
- Main conductor cross-section: 25-240 sqmm
- Branch conductor cross-section: 6-185 sqmm
- Voltage: up to 1 kV
Further Reading
- 2DIREKT from PFISTERER | Cable Connections & Terminal Clamps for Transformer Bushings & Busbars
- Insulation Piercing Connectors LV for Low Voltage Live Working & Cable Jointing
THORNE & DERRICK
Thorne & Derrick stock and distribute PFISTERER CONNEX Connectors for medium / high voltage cable connection and termination to electrical systems up to 33kV – we provide competitive prices for PFISTERER CONNEX connectors used to terminate and connect polymeric insulated MV-HV cables into gas insulated switchgear and electrical equipment from extensive UK stocks.
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 cable systems:
- Slip-on Cable Terminations
- Cold-shrink Cable Terminations
- Heat-shrink Cable Terminations
- Cable Joints – Heat & Cold-shrink
- Separable Connectors (Euromold)
- Surge Arresters & Switchgear/Transformer Bushings
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 MV

The SEANEX inner cone solution is an offshore variant of the successful Connex HV connection system that is specially adapted for 66kV inter-array cabling.

MV Connex Products | Ex Stock Thorne & Derrick | Inner Cone Cable Connectors 33kV
Lucy Zodion Awarded Tender by Scottish Power Energy Networks
June 15th, 2022-
Uploaded By - Chris Dodds (Thorne & Derrick Sales & Marketing Manager)
Press Release: Thorne & Derrick and Lucy Zodion | 17.6.22
STREET LIGHTING CUT OUTS
Thorne & Derrick, a Specialist Distributor for Lucy Zodion the market-leading manufacturer of Street Lighting & ICP Connection Solutions, are delighted to announce that Scottish Power Energy Networks (SPEN) have awarded a 2-year tender to Lucy Zodion to supply the following G81 approved products:
- Lucy 0260009009 SLF 25A Street Lighting Cut Out TYPE 1 SNE Boxed
- Lucy 0350012009 5 Way Connector Box
The Lucy Zodion range of street lighting cut-outs, controls, feeder pillars and isolators are specified and installed by ICP’s throughout the UK providing reliable and effective street lighting and electrical connections to our utility network.
Thorne & Derrick are Approved Vendors to SPEN and their Lloyds NERS accredited ICP’s, you can contact us for competitive prices and stock availability for the complete range of Lucy Zodion Street Lighting Equipment.
➡ For further information about how Lucy Zodion provide control and power distribution products for street lighting applications, please review the Lucy Titan (Cut-outs) and Lucy Trojan (Isolators) ranges of products.
Should you require any technical support or have any commercial requirements about G81 Approved 11kV/33kV Cables & Accessories please do not hesitate to contact Thorne & Derrick Sales Team.
Lucy Zodion SLF fused cut out
- Separate neutral and earth (SNE) cut out
- Maximum continuous load 25A
- Simple cam lever fuse carrier removal
- Single fuse
- Double pole
- Cut-out full conformity to BS7654
- Terminals accept cables up to 25sqmm
- IP22
- 2 x 20mmØ cable entry- grommets
Lucy Zodion Cut Outs | The SLF cut out range is approved by all Distribution Network Operators (DNO’s) throughout England, Scotland and Wales – G81 approved versions are available for ICP/IDNO connections.

Lucy Zodion Cut Outs
SPEN SAP Code* | Lucy Zodion Part Code | Description* |
30980590 | 0260009009 | CUT OUT 25A STREET LIGHTING TYPE 1 SNE: 25 AMP STREET LIGHTING CUT OUT, SNE CONSTRUCTION |

SLF
Lucy Zodion MLNS – 5 Way connector block
MLNS
- Maximum continuous load 100A
- Suitable for phase, neutral or earth conductors
- Serrated cable bores accept conductors up to 35mm² section
- Two M8 slotted head cable pinching screws per conductor
- Sealing wire facility
- IP22
- Removable shields for unused cable entries
- Robust thermoplastic housing
SPEN SAP Code* | Lucy Zodion Part Code | Description* |
30980639 | 0350012009 | 100 A, 5 WAY SINGLE POLE CONNECTOR BLOCK. SUITABLE FOR TERMINATING PHASE, NEUTRAL OR EARTH CONDUCTORS |
*The SPEN part codes and descriptions in the tables are taken directly from the tender document.
Lucy Zodion’s SLCOs are compliant with BS7654, which covers all aspects of the cut out from the materials in which it is manufactured, to a series of tests relating to temperature, ingress protection, current and mechanical strength.
BS 7654 | 10th Edition, May 15, 2020 | Specification for single‑phase street lighting cut-out assemblies for low-voltage public electricity distribution systems – 25 A rating for highway power supplies and street furniture | purchase copy.
About SPEN
SP Energy Networks are a Distribution & Transmission Network Operator keeping electricity flowing to homes and businesses throughout Central and Southern Scotland, North Wales, Merseyside, Cheshire and North Shropshire – this is achieved via a network of Overhead Lines & Underground Cables which they own and maintain.
This includes over 30,000 substations, 40,000km overhead lines and 65,000km underground cables.
3 SPEN Regulated Electricity Businesses
- SP Transmission PLC (SPT)
- SP Distribution PLC (SPD)
- SP Manweb PLC (SPM)
THORNE & DERRICK
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
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 MV HV
Elmeridge Cables Limited Custom Made Cable Specialists
May 19th, 2021Cable Specialists
A Guest Contribution
Elmeridge Cables Limited have been leaders in the production and distribution of custom made cables since 1987, supplying a wide range of low, medium and high voltage special cables and stock items to a growing worldwide market.
For almost three and a half decades, Elmeridge have predominantly been designing, producing and distributing low voltage custom made cables, for the following sectors and industries, including:
- Underwater Marine & Offshore
- Pumps & Sensors
- Oil & Gas
- Pipes & Drains CCTV Pushrod and Crawler Cables
- Cranes & Lifts
- Diving
- Fish Farming & Fisheries
- Medical & Science
- Railways & Trams
- Instrumentation & Control
- High Temperature & Thermocouple
- Aerostat (TARS)

Marine Cat5E Cable

Drain Pushrod Cable

Flexible Radar Cable

Rodent Resistant Rail Cable

Magnetometer Cable

Divers Communication Cable Blue

London Underground Fibre Optic Cable

Double Armoured Tow Cable

Medical Silicone Cable
We have supplied many underwater Marine and Offshore companies with our ‘Supreme Polyurethane’ which is Hydrolysis, UV, and Abrasion resistant.
This particular compound is incredibly tough, while remaining flexible, and can be ordered in various colours.
Elmeridge have produced 3 compounds that are termite-proof; our 3 cables spent 54 days in laboratory conditions in a termite mound with no adverse effects.
Compounds tested were Hytrel, Polyurethane, and Polyethylene.
Here are a few examples of special projects which we have been able to work on over recent years:
Elmeridge were able to supply the Spanish Navy with a 40-tonne breaking strain cable with the use of Kevlar aramidic yarn and two contra-helically wound layers of Nitronic 50 steel wire armour.
We have produced Rodent-resistant cables that were used in the Hong Kong Rail and underground system prior to 1st July 1997, before Chinese Rule.
Our pushrod cables for the Pipes & Drains sector have proved to be the toughest on the market today. With the rod cables in various sizes being pushed further than any others. We have worked in the sector for almost 30 years supplying some of the top companies in the UK.
Elmeridge have been asked to supply various cables over the years to F1, using compounds such as Hytrel for single core cables in many different colours. Their existing camera cables t were breaking down, and Elmeridge were able to provide a solution to prevent vibration degradation.
Elmeridge have produced a single 5km length of buoyant fibreoptic cable with a breaking load of 750kg, to view the condition of the culverts under London.
Elmeridge were asked to produce a 36-core umbilical cable for a ship’s radar system that could be flexed when traveling under bridges, without damaging the system and signal.
Elmeridge have been asked to produce two silicone cables for a medical company, the final solution was to place both cables together and produce one cable to minimize the diameter and to be as flexible as possible.
Elmeridge are capable of supplying many different types of Sensor Cables, some of which have vent tubes inside of various sizes.
Elmeridge had a great opportunity at the end of 2019/2020 to work with the British Antarctic Survey (BAS), supplying 8,000mtrs and 10,000mtrs of CTD (Conductivity Temperature and Depth) Cables for the RRS James Clark Ross and the RRS Sir David Attenborough.

RRS Sir David Attenborough
Our current lead times for production are approximately 8 to 10 weeks, depending on the specification and elements required.
A recent project for the Royal Air Force was to supply a high-grade circular copper braid with a clear PVC sheath. This braid was attached to the aircraft during refuelling to prevent a build-up of static electricity, reducing the fire hazard by grounding out the aircraft.
Elmeridge have produced more than four thousand different types of special cables since 1987.
For all production and distribution enquiries, our knowledgeable team are here to help and support you throughout your project. Please get in touch by email [email protected] or make that call on +44 (0) 1273 391810.
THORNE & DERRICK
SPECIALIST ELECTRICAL DISTRIBUTOR
Thorne & Derrick distribute the most extensive range of Cable Installation & Electrical Distribution Equipment to the Power Transmission & Distribution industry in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors.
We service UK and international clients working on underground cables, overhead lines, substations and electrical construction at 11kV and up to and EHV transmission and distribution voltages.
- Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Copper Earth Tapes, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.
- Distributors for: 3M Cold Shrink, ABB, Alroc, Band-It, Catu, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, Prysmian, Roxtec.

LV – Low Voltage Cable Joints, Glands, Cleats, Lugs & Accessories (1000 Volts)

MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)
Long-Term Protection Of Buried 4″ to 8″ Diameter Carbon Steel Pipelines
May 5th, 2021Project Data
Location | Sultanate of Oman |
Client | CC Energy Development S.A.L (CCED) |
Contractor | Best Oil & Gas Solution LLC and Al Haditha Petroleum Services S.A.O.C. |
Products | Denso Paste™ , Densyl™ Tape and Denso PVC Self-Adhesive Tape 200™ – both tapes applied with a 55% spiral overlap |
Date | August 2020 |
PROJECT DETAILS
CC Energy Development S.A.L (CCED) is an independent upstream Oil & Gas Exploration and Production Company which has been operating in Oman since 2007. CCED has had considerable exploration success to ensure long-term sustainability.
Their operating footprint is in Blocks 3 & 4, one of the largest concession areas in the Sultanate of Oman. CCED brings significant exploration, development, and production experience in the oil & gas industry and is an important contributor to the hydrocarbon sector in Oman.
Facts about Block 3:
• The Block is situated in eastern central Oman and comprises an area of 5,911 km2.
• The main producing fields in Block 3 are Farha South and the two recent discoveries of Ulfa and Samha.
Facts about Block 4:
• The Block is situated in eastern central Oman and comprises an area of 23,212 km2.
• The main producing fields in Block 4 are Saiwan and Shahd.
Denso’s high-performance Petrolatum Tape System has been successfully used to protect CCED’s buried Oil & Gas pipelines for approximately 8 plus years.
The system comprises of Denso Paste™, Densyl™ Tape and Denso PVC Self-Adhesive Tape 200™ (yellow). Both tapes are applied with a minimum 55% spiral overlap. In areas of high soil stress, Denso PVC Self-Adhesive Tape 250 or 440 grade (outerwraps) or Denso Glass Outerwrap™ are available subject to the degree of soil stress, and would also be applied with a minimum 55% spiral overlap.
➡ T&D stock and distribute Denso Mastic Duct Seal | Densoseal 16A
ABOUT DENSO
Denso North America Inc. is a subsidiary of Winn & Coales International, a leading manufacturer of anti-corrosion coatings that include Protal liquid epoxies, Denso petrolatum tapes, mastics, primers, bitumen tapes, butyl tapes, hot applied tapes, and a full line of marine pile protection systems. Winn & Coales was originally established as a business in London, England, in 1883, and the first petrolatum tape manufactured in the UK was Denso tape, manufactured under license by Winn & Coales (Denso) Limited.
Denso tape was developed over 80 years ago for the “Long Life Protection” of buried steel pipelines against corrosion. The Denso SeaShield Marine Systems include fiberglass forms, epoxy grouts, underwater epoxies, injectable epoxies, petrolatum tape and wrap systems.
Further Reading
Sealing & Waterproofing of Cable Ducts Using Densoseal 16A | Thames Water Project
Denso Bore-Wrap | Prevent Coating Damage During Pipeline Installations
Thorne & Derrick are Specialist Distributors to the UK and international Construction industry to provide safe and reliable LV HV Electrical Cable & Power Distribution Systems up to 66kV – we are highly customer responsive and absolutely committed to providing a world-class service.
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
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 MV HV