1. Rollovers, flashovers, and Backdrafts

2. Insulator should withstand power frequency voltage, switchingvoltage and lightning impulse voltage, shouldn't flashover under pollution.

3. The Arresters provide a preferred path between line and ground, guarding against insulator flashover

4. Reflux of electron of high voltage vacuum diode is one of the main factors to cause the dielectric surface flashover.

5. The discharge at the top of icicle is one of the main factors influencing flashover voltage when the air gap amid the sheds of ice-covered insulators is not bridged.

6. Bitting‚ 29‚ a career firefighter with the Keokuk Fire Department‚ died on December 22‚ 1999‚ when a flashover trapped him and two other firefighters as they tried to rescue children from a structure fire