Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager
Centriforce Stokbord underground cable protection covers are manufactured from high impact, recycled polyethylene designed to withstand damage and protect medium/high voltage cables from plant and hand tools – the cable covers protect high voltage cables from damage caused by diggers and excavators inadvertently causing cable strikes when working around underground cables and utility services.
Both Tape Tile and Stokbord cable covers are used to protect LV-HV cables and cable ducts installed by the ‘open cut’ trench method – the cable protection products are intended, during any future excavation work, to give a clear visual warning of the presence of underground cable, cable joints or cable ducts. The cable identification is compliant with ENATS Standard 12-23 and meets the impact requirements of BS2484.
Pictured: High Voltage 11kV Cable Strike – an excavator has impacted onto a 11kV high voltage power cable penetrating the cable sheath and XLPE insulation to cause a power outage. Lack of planning on development projects increases the possibility of serious injuries to operatives and greatly increase cost to projects. On site cable records and use of cable fault locators should ensure worker safety and prevent accidental damage and strikes to high voltage cables.
Damage to underground cables can have serious repercussions such as damage to anyone working on or near the cables or a power blackout such as that experienced in Londonderry, December 2013.
LV Low Voltage | MV Medium Voltage | HV High Voltage Cable Protection
Centriforce Stokbord cable covers are suitable for underground high voltage cable protection (22kV, 33kV, 66kV, 132kV and up to 400kV). The 4 thickness variations of Stokbord covers are 6, 9, 12 and 18mm. This coupled with the fact that Stokbord is easy to fabricate ensures Centriforce Stokbords are the ideal product for protecting underground cables.
Stokbord Cable Cover Application
Centriforce Stokbord Cable Covers are fully jointed, laid overlapped and connected with plastic jointing pegs to provide safe high voltage underground cable protection.
Centriforce Stokbord cable covers feature a red background with yellow top tape containing visible warning “Caution Electric Cable Below” – Stokbord cable covers meet BS2482 impact requirements for underground cable cover protection.
Not only does this protect from any impact to the cables that would be made by excavation, it also shows exactly where cables are laid. The locating of cables is therefore simplified.
The features and benefits of Centriforce Stokbord makes the performance of the products far superior to steel and concrete cable covers / tiles /plates.
Installation Of Cable Trench Covers & Cable Protection Tiles
All cables and ducts laid into cable trench should be over-protected by a cable protection cover or tape depending upon the highest voltage cable to be protected within the cable duct – typically in the UK the following cable protection tapes and covers are used for LV, MV and HV cables.
Marker tile tapes or Stokbord covers are installed over the cable in the appropriate trench drawings – usually there is no requirement to install either above approved cable ducts installed using trenchless techniques (i.e. directional drill) but either may be installed if it is deemed that additional MV-HV cable protection is required.
When Tape Tile is used it should be cut cleanly and installed so that the medium/high voltage cable is fully covered along the whole length of the installed cable duct.
More info ➡ Tile Tape | Stokbord
Underground Cable Protection
Thorne & Derrick International distribute the most extensive range of Cable Pulling & Cable Laying Equipment to enable the installation of low, medium and high voltage power cables into underground trench or duct – products also supplied for fibre optic blowing, subsea trenching, offshore umbilical installations and pulling armoured cables onto cable tray.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform, Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
Cable Blowers | Cable Lubricant | Duct Rods | Cable Socks | Cable Jacks | Cable Rollers | Cable Protection Covers MV HV | Cable Joints MV HV | Duct Sealing
Uploaded By: Chris Dodds - reading time 5 minutes
Centriforce Tapetile and Stokbord underground cable protection tiles and covers are the market leading, heavy duty utility protection system for protecting underground cable and pipes – this includes low voltage, medium voltage and high voltage power networks working at 11kV/33kV up to and including 132kV/275kV extra high voltage cables.
T&D supply the most extensive range of Centriforce Cable Protection products from stock for delivery throughout the UK to most UK DNO specifications in both Tapetile and Stokbord ranges – used to protect MV-HV Underground Cables & Joints.
Stokbord Cable Covers – 33kV Cable Protection For Underground MV-HV Cables
Tapetile – 11kV Cable Protection For Underground MV-HV Cables
See the complete Centriforce range: MV HV Medium & Voltage Cable Protection Products
➡ The following Selection Table outlines the current approved Cable Protection Systems for UK DNO’s for underground medium and high voltage cables.
| Northern Powergrid | Centriforce | Tapetile | 150×2.5mmx40m |  |
| Northern Powergrid | Centriforce | Tapetile | 200×2.5mmx40m | |
| Northern Powergrid | Centriforce | Stokbord | 1000x244x12mm | |
| Scottish Power | Centriforce | Tapetile | 200×2.5mmx40m |  |
| Scottish Power | Centriforce | Stokbord | 1000x244x12mm | |
| UK Power Networks | Centriforce | Tapetile | 200×2.5mmx40m |  |
| UK Power Networks | Centriforce | Stokbord | 1000x244x9mm | |
| Western Power Distribution (WPD) | Centriforce | Stokbord | 1000x450x12mm |  |
| Western Power Distribution (WPD) | Centriforce | Stokbord | 1000x244x12mm | |
| Scottish & Southern Energy (SSE) | Centriforce | Stokbord | 1000x244x12mm |  |
| GTC | Centriforce | Tapetile | 150×2.5mmx40m |  |
| GTC | Centriforce | Tapetile | 200×2.5mmx40m | |
| National Grid | Centriforce | Tapetile | 200×2.5mmx40m |  |
| National Grid | Centriforce | Stokbord | 1000x300x14mm | |
| National Grid | Centriforce | Stokbord | 1000x450x14mm | |
Centriforce Stokbord and Tapetile heavy duty plastic underground cable covers have virtually replaced concrete cable covers, tiles and plates for several reasons:
Two construction companies have been fined £90,000 after workers were seriously burned, and one scarred for life, after they cut into a live 11kV electrical cable. Unprotected underground cables distributing medium and high voltage electricity pose serious health and safety dangers.
T&D are Specialist Distributors to the UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and High Voltage Jointing Contractors of an extensive range of Cable Joints, Substation, Distribution, Tooling & Installation Equipment approved by the utilities:
LV ♦ MV ♦ HV
T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Cable Pulling & Installation Equipment – we service UK and international clients working on underground cables, overhead lines, substations and electrical construction at LV, 11kV, 33kV and EHV transmission and distribution voltages.
LV – Low Voltage Cable Joints, Glands, Cleats, Lugs & Accessories (1000 Volts)
MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)
Cable Laying – Underground Cable Covers, Ducting, Seals & Cable Pulling Equipment
Thorne & Derrick invite you to join LinkedIn’s largest LV-HV Electrical Discussion Group : Low & High Voltage Power, Cabling, Jointing & Electricals. Discussion subjects include cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV. Network, engage and promote your profile, company or products with over 10,000 influencers.
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