Safety information

Basic do's and don'ts

  • Never touch any power line, even if you think it's safe
  • Never assume a cable is not live because power is out in surrounding properties
  • Report downed power lines immediately on 505050.
  • Look up. Don't touch overhead power lines with ladders, scaffold, TV antennas or other long items
  • Landscape carefully around electrical equipment
  • Look for power lines before climbing trees
  • If power lines run through trees, call us on 505050 to request we trim branches away from the lines
  • Don't attach signs, antennas, clothes lines or any other items to overhead power line poles
  • Don't allow children to play around substations -they contain high-voltage equipment
  • If a kite gets tangled in our lines or a ball is kicked into a substation, call us on 505050 and we will retrieve it for you
  • If you see that any of our safety barriers around open pit work have fallen over, please call us on 505050.  

Avoiding danger from overhead electricity cables

More than 100km of overhead power lines cross the countryside in Jersey, providing electricity to rural communities. Though restricted to 230/400 Volts, they can still provide a lethal shock.

Before you start work within nine metres of overhead power lines, call us on 505460.

Here are some basic points to remember when working or planning scaffolding activities near overhead power lines. Comprehensive safety guides are available to download.

Key points

  • Never assume that electrical equipment is dead, even if the wires have fallen or broken
  • Remember that the power can be switched back on remotely at any time, without warning
  • Even the 230-Volt overhead lines can produce 10,000 times more current than is required to kill a person
  • Electricity can jump gaps
  • Trees, string, ropes, suspension lines and water can conduct electricity
  • Rubber boots will not protect you
  • Most overhead electricity wires are not insulated

Avoiding danger from underground electricity cables

A main danger of excavating is damage to underground electricity cables. 

Injuries are usually caused by the explosive effects of arcing current with associated fire or flames, which typically cause severe and potentially fatal burns to the hands, face and body. 

Taking all practicable precautions to prevent accidental contact with underground electricity cables, contractors will help to ensure your employees' safety and help you to avoid the potential considerable cost of repair, compensation claims or even prosecution. 

Key points

  • Obtain plans of our underground cables before you start excavation works
  • Refer any queries back to our Drawing Office
  • The plans may only give an indication of the location, configuration and number of cables present and cannot be relied upon for accurate distance measurement
  • Low Voltage service cables are not usually shown
  • Check the area for indicators of the presence of service cables and use a cable locator and safe excavation practices.
  • Use suitable cable locating devices in conjunction with the cable plans to determine as accurately as possible the position of underground cables
  • Ensure operatives are trained in the use of locating devices and competent in interpreting the signals obtained
  • Note and mark the line of all identified cables with waterproof paint and crayon or shallow pegs in grassed areas
  • Start excavation with trial holes dug using suitable hand tools to confirm the position of any buried underground cables, taking special care above or close to the assumed position of cables
  • Do not use hand held power tools and mechanical excavators within 0.6m of Low Voltage cables or 1m of High Voltage cables without prior agreement with us
  • As the excavation progresses, carefully watch for indication of the cable and make regular checks with the cable locating device to determine the position of the cable
  • Where power tools are necessary because cables are embedded in concrete or under other difficult obstacles, the cables should be made dead or an alternative method of work agreed with us before you start
  • Take suitable precautions to prevent damage to exposed cables while other works proceeds
  • Backfill around the cables must be either black sand, or equivalent, or, where necessary, cement bound sand installed by competent persons
  • You must replace any disturbed marker tapes or tiles to indicate the presence of cables to other contractors excavatiung in the vicinity

Safety information for Farmers and Agricultural Contractors;

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Safety information for Scaffolders and Building Contractors;

Scaffolders and Builders - English Scaffolders and Builders - Polish  Scaffolders and Builders - Portuguese 
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