Use of an open flame to ignite a wildfire and the source is removed from the ignition area.

RR: Process of treating or removing flamable vegetation from the Railroad Right-of-Way (ROW).
Debris/open burning: Use of fire to clear vegetation, debris and brush within a right-of-way.

Any unauthorized use of fire or incendiary devices by an individual under the ae of 18, including incidents caused by curiosity and exploration with fire.

Simultaneous contact, or arching, between a foreighn object and electrical equipment, either phase-to-phase or phase-to-ground, resulting in electrucution and short circuits.