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Electrical Safety Flashcards

7 cards from real CSCS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Electrical Safety flashcards as text

  1. What is the standard voltage for most hand-held power tools used on UK construction sites?

    Answer: 110V

    110V centre-tapped to earth (CTE) is the standard for portable tools on construction sites because it limits the potential shock voltage to 55V to earth.

  2. What color are 110V step-down transformers typically painted on UK construction sites?

    Answer: Yellow

    110V transformers on construction sites are painted yellow so workers can immediately identify them as the correct, safer voltage supply.

  3. Before using any electrical equipment on a construction site, what should you check first?

    Answer: The PAT test label and physical condition of the equipment

    A valid PAT test sticker confirms the equipment has been formally tested, and a visual check for damage ensures it is safe to use before you start.

  4. What does PAT stand for in the context of electrical safety on construction sites?

    Answer: Portable Appliance Testing

    PAT stands for Portable Appliance Testing, a formal process of checking portable electrical equipment to ensure it is safe to use.

  5. Which regulation specifically governs electrical safety in the workplace in the UK?

    Answer: Electricity at Work Regulations 1989

    The Electricity at Work Regulations 1989 impose a duty on employers to ensure all electrical systems are constructed and maintained so as to prevent danger.

  6. What should you do if you discover damaged electrical equipment on a construction site?

    Answer: Take it out of service, attach a 'Do Not Use' label, and report it to a supervisor

    Damaged equipment must be immediately withdrawn from service, clearly labeled to prevent use by others, and reported so it can be properly inspected or repaired.

  7. What physical safeguards should be put in place when construction work must take place near overhead power lines?

    Answer: Goal-post height restriction barriers and warning signs should be erected

    Goal-post barriers restrict the height of vehicles and plant, while warning signs alert workers, together preventing accidental contact with live overhead cables.