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Underground Electrical Warning Tape

Product Highlights

  • Highly visible underground tape - Bold print alerts to electric cable below during excavation work.
  • Durable and non-adhesive film - Resists degradation from soil acidity and alkali environments.
  • Compliant with DNO regulations - Approved to ENA TS 12-23 and EN 12613:2009 utility standards.

SKU CA750045

Underground warning tape helps safeguard any underground service line by providing a visible and chemical-resistant alert layer. Designed to flag electric cable below, this polyethylene film is printed with a bright and durable warning message. The non-adhesive tape is fully compliant with ENA TS 12-23 and EN 12613:2009 standards, and widely approved by UK DNOs for use in regulated infrastructure projects.

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This underground electrical warning tape is used to indicate the presence of buried electric cable below ground level. Designed for high visibility, the tape features a vivid print warning and is manufactured from robust, non-adhesive polyethylene to ensure long-lasting performance in diverse soil conditions.

It supports underground service protection efforts by enabling early recognition of electric cable locations during trench work. Approved by leading DNOs, the tape meets all compliance needs for regulated utility sites.

  • Bright warning print - Offers clear visual identification for underground electrical infrastructure.
  • Resistant to soil acidity and alkalis - Maintains integrity in chemically aggressive environments.
  • Approved and specified by DNOs - Recognised standard for underground utility marking.
  • 365m roll length - Offers extended coverage for large infrastructure trench runs.
  • EN-compliant - Certified to ENA TS 12-23 and EN 12613:2009 utility norms.

Used extensively by contractors, civil engineers, and electricity distribution companies, this underground electrical warning tape enhances safety in excavation zones. Its bold, high-contrast message helps alert work crews to the presence of electric cable below, enabling precautionary excavation procedures and avoiding costly utility strikes.

The non-adhesive design allows fast deployment along trench backfill layers, typically positioned 150–300mm above the buried utility. This gives crews a pre-warning signal before direct contact is made. Made from polyethylene, the tape remains stable in both acidic and alkaline soils, preserving visibility and messaging over time.

It’s suitable for use in urban utility routes, substation feeds, telecoms corridors and new housing developments. As part of broader underground service safety strategies, this tape plays a key role in reducing risk, ensuring compliance and maintaining service continuity across infrastructure networks.

HERMEQ stock a wide-range of Underground Service Protection, Groundworks, Ground Mats & Road Plates conforming to all required safety specifications and regulations.

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Used to mark electrical cable below ground, this non-adhesive underground service tape is a critical visual alert during trench excavation and reinstatement. Its vivid printed message enhances safety for ground crews while complying with national utility regulations.


The bright red colouring and bold text help reduce the likelihood of unintentional strikes, a frequent hazard on construction and civil engineering sites. This early warning system can prevent serious incidents, protect infrastructure assets, and avoid unplanned outages or emergency repairs.


The tape measures 365 metres per roll, enabling efficient deployment over long trench runs without frequent replacements. It is easy to handle and install, typically unrolled just above the service line before backfilling. Its lightweight construction makes it suitable for multi-utility corridors where speed and accuracy are vital.


Commonly adopted by DNOs, utilities, and major contractors, this warning tape meets ENA TS 12-23 and EN 12613:2009 specifications. It performs reliably in the field, even in adverse weather or mixed soil conditions, helping operators meet both compliance and duty-of-care obligations.


Where electric cable below is routed through public footways, highways or brownfield developments, the presence of clear warning signage reduces risk for everyone on site. The chemical stability of the material ensures the warning remains legible and intact for the duration of the asset’s lifecycle.


This electrical warning tape forms part of a wider site safety planning process, contributing to Construction Design and Management (CDM) responsibilities and promoting best practice in underground infrastructure delivery.

What is underground electrical warning tape used for?
It provides a visible alert of electric cable below, helping prevent damage during excavation.

How is the tape installed?
It’s laid above the buried service, typically 150–300mm from the surface in trench backfill.

Is the tape resistant to chemicals in soil?
Yes, it’s made from polyethylene and resists both acidic and alkaline soil conditions.

Does it comply with UK utility regulations?
Yes, it’s approved by DNOs and meets ENA TS 12-23 and EN 12613:2009 standards.