Warning sign - yellow triangle
Electrical warning signs
Electrical warning signs show that live equipment or wiring is close and tell people what to do about it. These printable signs use the yellow warning triangle with a lightning bolt, in wordings such as electrical hazard, risk of electric shock, electrical panel keep clear, switch room authorised personnel only, isolate power before servicing and overhead power lines. Print on A4 or A3, in portrait or landscape, and fix to doors, cabinets and equipment. For specific voltages and high voltage, see the high voltage signs page.
Electrical hazard sign
Sign text: "Electrical hazard". PDF, 14 KB. A5, A4 or A3, portrait or landscape.
Buy a durable version
Rigid plastic, aluminium or self-adhesive electrical warning signs, ready to put up. The pictures are our own free designs, not the Amazon products.
Self-adhesive electrical hazard labels
View on Amazon - Self-adhesive electrical hazard labels (affiliate link, opens in a new tab)
Rigid electrical hazard sign
View on Amazon - Rigid electrical hazard sign (affiliate link, opens in a new tab)
Weatherproof electrical warning sign
View on Amazon - Weatherproof electrical warning sign (affiliate link, opens in a new tab)
Also useful: A4 laminating pouches (to protect a printed sign) on Amazon (affiliate link, opens in a new tab)
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Choose your wording
7 versions. Each one downloads as a PDF in A5, A4 or A3, portrait or landscape.
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Risk of electric shock
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Electrical hazard - authorised personnel only
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Electrical panel - keep clear
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Switch room - authorised personnel only
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Isolate power before servicing
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Overhead power lines
Download all 7 signs
Every wording, size and orientation in one ZIP file, 536 KB.
Print tips
- Print at "actual size" or 100%, not "fit to page", so the margins stay even.
- Use thicker paper or card (160gsm or more) if the sign will be handled.
- For outdoor or long-term use, laminate it or buy a rigid version.
Where to use it
- Distribution boards, cupboards and consumer units
- Plant rooms, switch rooms and meter cupboards
- Machine control cabinets and isolators
- Farm tracks and yards under overhead lines
- Building sites with temporary power
Questions
What does the lightning bolt in a yellow triangle mean?
Electrical hazard: there is a risk of electric shock or burn nearby.
Does a sign make electrical equipment safe?
No. Electrical work should be done by competent people and equipment properly installed and isolated. Signs are a reminder.
Which size should I use?
A5 or A4 on cabinets and doors, A3 for gates or fences.
Where are the high voltage signs?
On the high voltage signs page, with the common voltage wordings.
Related signs
High Voltage Signs
Hazard Warning Signs
Danger Signs
Men at Work Signs
Warning Signs
Fire Safety Signs
Health and Safety SignsWarning class. A yellow triangle with a black edge warns of a hazard. All construction signs