Warning High Voltage Cables Underground Sign
When you excavate, you gamble with what lies below. Therefore, you need signage that stops mistakes before the first bucket bites. Our warning high voltage cables underground sign delivers that crucial pause, signalling the presence of buried electrical services in time for crews to rethink their next move. Made in the UK and aligned with BS 5499 & EN ISO 7010, it combines the ISO 7010 W012 electricity pictogram with a clear “High Voltage Cables Underground” legend. Consequently, drivers, groundworkers and visitors recognise the risk instantly, change behaviour and avoid costly and dangerous strikes.
What this sign means and why it matters
Because the ISO 7010 W012 symbol (lightning bolt in a yellow triangle) is universally recognised, it communicates “danger, electricity” in under a second. However, many sites still rely on ad-hoc notices or faded markers that people overlook. By contrast, this warning high voltage cables underground sign pairs the standard symbol with explicit text. As a result, the message is unambiguous: high-voltage services are buried here; proceed only with the correct controls. Additionally, the sign supports your control measures under the Health and Safety (Safety Signs and Signals) Regulations 1996 and dovetails with permit-to-dig procedures, utility plans and CAT & Genny surveys. In short, it turns a drawing-room warning into a point-of-work intervention.
Where to deploy for real-world impact
To actually reduce strikes, position the sign at decision points, not as an afterthought. Place it at compounds, on fence runs, beside gate entries and along approaches to excavation zones. Moreover, repeat the sign at intervals where long hoardings or perimeter fences may cause sign fatigue. On highways works, mount at eye level where plant marshals and machine operators queue. In rail and civils environments, add the sign at every permitted entry to a dig area and near known service corridors. Similarly, for facilities and estates teams, mark landscaped verges and car parks before small works begin. Because small works cause many accidents, clear prompts here make a disproportionate difference.
Compliance, standards and best practice
Our layout follows the intent of BS 5499 & EN ISO 7010: the triangular warning symbol remains dominant, with high-contrast colours and readable supplementary text. Furthermore, we print with UV-stable inks and maintain consistent colour values across batches, so your sign stays legible through seasons. Use this sign as part of a documented process: consult utility plans, carry out cable avoidance tool scans, implement permits, brief your operatives, then reinforce the message with obvious, repeat signage. For deeper guidance on avoiding danger from underground services, review HSE’s publication HSG47 (external resource): HSE — HSG47.
Sizes and materials that fit the job
Because visibility and durability vary by environment, we offer practical choices. Choose the format that suits viewing distance, weather exposure and fixing method. Our standard sizes and materials are stocked for rapid turnaround, and we can manufacture customs on request.
Standard materials (indoor and outdoor)
- Vinyl Sticker — ideal for smooth doors, cabinets and temporary boards.
- 2 mm Rigid Plastic (PVC) — lightweight and economical for interiors.
- 3 mm Foamex — rigid, clean edges; great for walls, hoardings and fences.
- 5 mm Foamex — added rigidity for tougher sites and wider spans.
- 3 mm Aluminium Composite (ACP) — long-term outdoor durability.
- 5 mm Aluminium Composite (ACP) — maximum stiffness for exposed locations.
- Optional: Photoluminescent “glow in the dark” and additional PVC options on request.
Standard sizes (mm)
-
- 150 × 200
- 200 × 300
- 300 × 100
- 300 × 200
- 300 × 400
- 400 × 300
- 400 × 600
- 600 × 200
- 600 × 400
If you cannot find the option you need, please email sales@eusigns.co.uk. We’ll spec a size that matches your viewing distance, speed of approach and mounting height.
Readability, placement and visibility tips
Good signs work because people can’t miss them. Therefore, centre the sign at roughly 1.4–1.7 m for pedestrian routes and lift higher where vehicles or barriers obstruct sightlines. Additionally, choose larger formats for fast-moving plant and long approaches. If glare is likely, select a matte or anti-graffiti laminate. Where dust or mud collects, plan a quick wipe-down in daily checks. Moreover, repeat the warning high voltage cables underground sign at intervals on hoardings longer than 25–30 m, and at each discrete access point. Finally, never half-hide a warning behind stacked materials; move the stack or relocate the sign the same day.
Installation and fixing methods
Save time by matching fixings to the substrate from the start. On smooth metal or plastic, VHB tape gives a clean, fast bond. On timber or masonry, use stainless screws or rivets with backing washers. For chain-link, cable-tie to a pre-drilled ACP panel. Meanwhile, vinyl stickers apply best to clean, degreased surfaces at moderate temperatures; press from the centre outward to reduce bubbles. Furthermore, avoid over-drilling corners; if you need holes, we can pre-drill and radius the corners to prevent stress cracks.
Who uses this sign—and how
Construction and civils contractors deploy the sign alongside permits to dig and utility drawings. Utilities providers use it to protect primary routes and sub-station feeds where future minor works could expose risk. Highways and street-works teams install the sign at verge works, crossings and junction reconstructions, especially near known distribution trenches. Rail maintenance crews use it at depot updates and platform works. Facilities and estates teams mark landscaped zones where legacy cables cross footpaths or car parks. Because all these tasks involve different traffic patterns, your mounting height and size may vary; nevertheless, the objective stays the same: intercept the worker before they act.
Integrating with site systems
Signage only delivers when it fits your system, so integrate it with inductions, method statements and toolbox talks. For example, when you brief the permit, point to the installed warning high voltage cables underground sign on site and label its location on the plan. Then, add QR codes to your boards that link to the permit or the latest plan subset. Consequently, the board becomes a live reference, not just wall furniture. Additionally, if you use colour-zoned hoardings, maintain consistent colour contrast so the warning triangle still dominates.
Customisation options that stay compliant
Sometimes you need more than a generic legend. Therefore, we offer supplementary text that preserves the ISO 7010 pictogram while tailoring the message. Add route names, cable depths, feeder IDs, feeder voltages, or contractor details without overcrowding the layout. Moreover, we can include bilingual text, asset IDs and QR codes to RAMS or permits. Because consistency is everything, we store your artwork master so repeat orders arrive identical—same fonts, margins and colour values—every time.
Durability, cleaning and lifecycle
Sites are harsh, so we print high-resolution graphics with UV-stable inks and laminate where needed. Additionally, ACP and Foamex resist weathering, while PVC and vinyl suit interiors and temporary applications. Clean with mild detergents; avoid aggressive solvents unless you choose our anti-graffiti laminate. When projects end, you can often relocate non-adhesive boards to new phases. Consequently, you reduce waste and save re-order time. For sustainability reporting, we can summarise material choices and end-of-life options on request.
Ordering, delivery and support
Because we manufacture in Borehamwood, we control quality and lead times. We provide free local delivery within 3 miles of WD6 and offer fast national shipping across mainland UK. Additionally, we can bundle multiple safety categories to cut carriage costs and to simplify purchasing. If you need installation, our fitters plan around your site constraints and hand over with a clear snag-free finish. If you’re rolling out across multiple locations, we’ll create a simple schedule—legend, size, material, fixing and location—so buying and fitting both run without noise.
Why buy from EU Signs?
You want straightforward, British-made safety products that work on site. Therefore, we focus on compliance, durability and speed. We print on UV flatbed and solvent platforms, we CNC-cut for clean edges, and we check every stack before it leaves the shop. As a result, you receive crisp pictograms, accurate colour and boards that sit flat and last. Furthermore, you get honest advice on materials and fixings, not a one-size-fits-all upsell. If you prefer one supplier for boards and mandatory controls, we can pair this product with matching blue-circle instructions and prohibition signage for a consistent look across your site.
Frequently asked questions
Is this sign compliant with UK standards?
Yes. We design to BS 5499 & EN ISO 7010 using the W012 electricity pictogram. Additionally, our typography and colour balance keep the symbol dominant, as the standards intend.
Can you match our existing boards?
Absolutely. Send a photo of the sign with a size reference or your previous artwork file; we’ll align materials, sizes and margins. Moreover, we’ll store your master so future orders arrive identical.
What size should I choose?
As a rule, pick larger sizes for long approaches and vehicular traffic. Conversely, A5-A4 equivalents work indoors at short viewing distances. If in doubt, ask; we’ll recommend a size based on your layout.
Do you supply photoluminescent versions?
Yes. We can produce glow-in-the-dark variants for low-light areas, tunnels and night shifts. Nevertheless, verify that luminous materials suit your environment before ordering.
How quickly can you deliver?
We stock core options and manufacture in-house. Consequently, most orders ship quickly in 24 hours. If you have a deadline, tell us; we’ll set a realistic turnaround and meet it.
Related products and next steps
Standardise your site by pairing this board with complementary ranges. For instructions at the point of risk, see our Mandatory Signs. For a broader view, browse the full Health & Safety Signs category. If you’re ready to brief or need a bulk quote, contact us and we’ll spec sizes, materials and fixings for your environment. Because clarity prevents accidents, choose the warning high voltage cables underground sign that gets noticed before the ground opens.
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