9464

Ground Fault Interrupter

Ground fault interrupters are designed to protect people from electrical shock by interrupting a household circuit when there is a difference between the currents through the hot and neutral wires, shown as red and black in the graphic. Such a difference might indicate an abnormal leakage of current from the hot wire. The hot and neutral wires pass through a sensing coil so that the two currents, traveling in opposite directions at any instant, give a net zero current through the coil. Since a current-carrying wire produces an AC magnetic field, a slight imbalance, even of the order of milliamperes, induces a voltage in the sensing coil. This triggers an electromagnet that trips the circuit breaker, shown as a moving rectangle, in about 1 millisecond. Assuming the appliance is not damaged, the reset button on the electrical outlet restores normal operation. This is activated by pressing the third button |⊲ on the ground fault trigger. (Wait a couple of seconds before you do this.)

SNAPSHOTS

  • [Snapshot]
  • [Snapshot]
  • [Snapshot]

DETAILS

    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.









 
RELATED RESOURCES
Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Powered by Wolfram Mathematica © 2014 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+