APCO - Electric & Magnetic Fields (EMF) APCO - Electric & Magnetic Fields (EMF)
HomeYour AccountOutages & ProblemsService RequestsSafetySave Money & EnergyEnvironmentNews & InformationContact Us (Contáctenos)
News & Information / Power Projects & Plans / Electric & Magnetic Fields (EMF)
Electric And Magnetic Fields

Electric and magnetic fields (EMF) occur in nature and wherever electricity flows.

Electric and magnetic fields are present in and around the earth. Thunderstorms produce EMF.

The earth’s magnetic field is the force that causes a compass to always point north. Magnetic fields also result from current or the flow of electricity in a wire; field strength increases as the current increases and decreases as distance from the wire increases.

Magnetic fields are measured in units called gauss or Tesla and typically are reported in thousandths of a gauss, milligauss (mG), or microTelsa.

Electric fields are produced by the presence of voltage or an electrical charge: the higher the voltage, the greater the electric field.

Electric fields are measured in volts per meter.

A lamp that is plugged in produces an electric field even while it is turned off. It will produce a magnetic field only when it is turned on.

Objects such as trees, shrubs and buildings can block electric fields. Magnetic fields, however, are not easily blocked and can pass through most objects.

The strength of both fields declines rapidly as the distance from the wire increases.

Because EMF can be found in nature and because our society relies on electricity, people are exposed to EMF much of the time.

Visit AEP.com | View mobile site
Use of this site constitutes acceptance of the AEP Terms and Conditions. View our Privacy Policy. © 1996-2014 American Electric Power. All Rights Reserved.
Try Paperless Billing Now

You already go online to do business with Appalachian Power. Try paperless billing and you can:

  • Your Nest thermostat is waiting! Enroll in paperless today to be in the sweepstakes!
  • Pay your bills online for free
  • Help the environment by using less paper
  • Enjoy convenience -- get online access to all of your bills

Thank you. You are signed up for paperless billing and will receive your bill notification via e-mail.

We're sorry. There was an error enrolling your account in paperless billing. For more information, contact the Customer Operations Center at (800) 956-4237.
In addition to your web password, this account has a privacy Security Code. The Security Code is a password you verbally requested with an agent for your electric account. Beginning January 7th the Security Code will be required to login. Please call our Customer Operations Center at (800) 956-4237 to verify or change your Security Code.