Danger High Voltage Cables Overhead Electrical Sign
Warn staff, contractors and visitors of dangerous overhead high voltage cables with this highly visible electrical hazard sign.
• Alerts people to the presence of overhead high voltage cables
• Suitable for construction sites, industrial areas and utility zones
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reduce the risk of accidental contact with live electrical cables
Product Overview
The Danger High Voltage Cables Overhead Electrical Sign is designed to warn staff, contractors and visitors of dangerous overhead high voltage cables. Featuring a bold yellow and black danger design with a recognised electrical hazard symbol, it provides a clear visual warning to help prevent accidental contact with live electrical cables and improve safety in high-risk areas.
Where to Use
- Construction sites
- Industrial premises
- Utility zones
- Site access routes
- Areas beneath overhead power lines
Key Features
- Clear high voltage cables overhead warning
- Recognised electrical hazard symbol
- High-visibility yellow and black design
- Easy to identify from a distance
- Helps improve awareness of overhead electrical hazards
Materials & Options
- Rigid Plastic (1mm)
- Rigid Plastic 1mm (Self Adhesive Back)
- Rigid Plastic (2mm)
- Rigid Plastic 2mm (Self Adhesive Back)
- Self Adhesive Vinyl
Compliance
This sign supports compliance with UK health and safety regulations, including:
- Health and Safety at Work etc. Act 1974
- Safety Signs and Signals Regulations 1996
Frequently Asked Questions
Where should this sign be installed?
Install this sign at entrances, access routes and work areas where overhead high voltage cables present a potential danger.
Is this sign suitable for outdoor use?
Suitability depends on the selected material. Choose the appropriate material option for your installation environment.
What does this sign indicate?
It warns that dangerous overhead high voltage cables are present, helping to prevent accidental contact with live electrical equipment.
Trade Discounts
Rainbow Safety supplies safety signs to trade professionals across the UK.
Our trade customers include:
- Fire safety service companies
- Fire risk assessors and safety consultants
- Electrical wholesalers
- Facilities management companies
Approved trade customers receive:
- Preferential trade discounts
- Better margins for reselling safety signs
- Marketing support to help you sell more signs
- Access to our full range of safety signs
With the support and marketing tools provided, our sales have grown to over £3,000 per month.
Fire extinguisher servicing margins are not what they used to be, so supplying safety signs has become a valuable additional revenue stream for our business. On one warehouse safety survey alone we £5,100 in a single order.
Previously we were regularly asked to supply safety signs but couldn’t compete with internet prices while maintaining healthy margins. Working with rainbowsafety.co.uk.
Loyalty Rewards
Rainbow Safety rewards regular customers across the UK who order safety signs on an ongoing basis.
- Schools and colleges
- Facilities management companies
- Contractors and maintenance teams
- Offices and commercial premises
- Preferential pricing for regular customers
- Free design service for custom safety signs
- Access to exclusive promotional offers
- Dedicated account manager if required
“Rainbow Safety has become our go-to supplier for safety signs.”
We regularly need safety signs for maintenance work, refurbishments and ongoing compliance updates. Since ordering from Rainbow Safety, the process has been straightforward, reliable and cost-effective.
The loyalty rewards and special offers have helped us save money across repeat orders, while the wide product range means we can usually source everything we need in one place.
Fast ordering, consistent quality and ongoing rewards have made Rainbow Safety a valuable supplier for our business.
Reviews
We mounted this sign to a fence post outside a warehouse near Waterford. The sign looks good and the warning is obvious. However — if the sign is placed too low or in a cluttered area, it might be missed by taller vehicle drivers until too late. It works best when mounted high and clearly visible from a distance. Still, for price and build-quality, it’s a useful overhead-cable warning.
This danger sign is exactly what you need when there are overhead high-voltage cables above. We placed it at the yard entrance on our small utility site. The sign is very visible even from a distance, which helps alert lorry drivers before they enter. The material feels sturdy, and even after a month outside the print and colours remain crisp. Worth the investment if you value safety
I ordered the vinyl-backed version for a temporary site I was working on. The sign went up easily and looked neat. Over a few weeks with rain and wind it stayed mostly in place, though I’d feel more confident if it were screwed or fixed with bolts rather than relying solely on adhesive. For short-term jobs or as a supplementary warning, it’s fine, but for long-term outdoor use, a rigid-plastic or drilled-mounted version would be safer.
On our construction site we used this sign to warn vehicle drivers and contractors of the overhead cables. The wording and hazard symbol are unmistakable. It’s easy to mount on a wooden post, and despite a few heavy showers the sign shows no signs of fading or damage. Definitely gives extra safety awareness and peace of mind on site.



