ABSTRACT
The magnetic field of a transmission line increases with line ampacity, and increases at ground level with conductor sag. Typical powerline configurations are evaluated to show their magnetic fields. It is shown that the magnetic field of overhead transmission lines is within acceptable limits. Line designs and EMF mitigation methods are developed to lower transmission line magnetic fields in sensitive areas. Electric field limit at ground level is not exceeded by higher transmission line ampacity if the maximum design temperature of the conductor is not exceeded and minimum conductor-to-ground distance is maintained.
