Safety Precautions with Electrical and Electronic Equipment


Safety Precautions for Working with Electrical and Electronic Equipment:

  1. Avoid Contact with Voltage Sources:
    • Turn off power before touching circuit parts to prevent electrical shocks.
  2. Do Not Work Alone:
    • Have someone nearby or ensure a telephone is available in case of emergencies.
  3. Avoid Working When Fatigued:
    • Refrain from working when tired or under the influence of medications that induce drowsiness.
  4. Remove Metallic Jewelry:
    • Take off rings, watches, and metallic jewelry before working on circuits.
  5. Know Proper Procedures:
    • Learn and understand correct procedures and potential hazards before working on equipment.
  6. Check Power Cords:
    • Ensure power cords are in good condition, with no missing or bent grounding pins.
  7. Maintain Tools:
    • Keep tools well-maintained, including checking insulation on metal tool handles.
  8. Make High-Voltage Connections Last:
    • When making circuit connections, connect to the highest voltage point last.
  9. Avoid Power Supply Terminals:
    • Steer clear of direct contact with power supply terminals.
  10. Use Insulated Wires and Connectors:
    • Always use insulated wires and connectors with insulating shrouds.
  11. Minimize Cable Length:
    • Keep cables short and connect polarized components correctly.
  12. Report Unsafe Conditions:
    • Report any unsafe conditions promptly.
  13. Follow Workplace Rules:
    • Adhere to workplace and laboratory rules; avoid having drinks or food near equipment.
  14. Handling Energized Conductors:
    • If someone is unable to release an energized conductor, switch off power immediately or use nonconductive material for separation.
  15. Lockout/Tagout Procedure:
    • Implement lockout/tagout procedures to prevent accidental power-on during circuit work.
  16. Handle Tools Properly:
    • Use tools correctly and maintain a tidy work area.
  17. Wear Safety Glasses:
    • Wear safety glasses, especially during tasks like soldering and wire clipping.
  18. Power Shutdown and Capacitor Discharge:
    • Turn off power and discharge capacitors before touching any part of a circuit.
  19. Know Emergency Locations:
    • Be aware of emergency power-off switches and emergency exits.
  20. Respect Safety Devices:
    • Never override or tamper with safety devices like interlock switches or ground pins.
  21. Wear Dry Shoes:
    • Wear dry shoes, and avoid standing on wet or metal floors when working on electrical circuits.
  22. Avoid Wet Hands:
    • Never handle instruments with wet hands.
  23. Verify Circuit Status:
    • Double-check the status of a circuit with a reliable meter before handling.
  24. Set Current Limiters:
    • Set current limiters on electronic power supplies to prevent excessive currents for the test circuit.
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