Physics » Electromagnetic Induction and AC Circuits » Electrical Safety: Systems and Devices

Summarizing Electrical Safety


  • Electrical safety systems and devices are employed to prevent thermal and shock hazards.
  • Circuit breakers and fuses interrupt excessive currents to prevent thermal hazards.
  • The three-wire system guards against thermal and shock hazards, utilizing live/hot, neutral, and earth/ground wires, and grounding the neutral wire and case of the appliance.
  • A ground fault interrupter (GFI) prevents shock by detecting the loss of current to unintentional paths.
  • An isolation transformer insulates the device being powered from the original source, also to prevent shock.
  • Many of these devices use induction to perform their basic function.


thermal hazard

the term for electrical hazards due to overheating

shock hazard

the term for electrical hazards due to current passing through a human

three-wire system

the wiring system used at present for safety reasons, with live, neutral, and ground wires

Continue With the Mobile App | Available on Google Play

[Attributions and Licenses]

This is a lesson from the tutorial, Electromagnetic Induction and AC Circuits and you are encouraged to log in or register, so that you can track your progress.

Log In

Share Thoughts