Magnitude & Frequency of Power Line Surges*

• 6,000 volt surges can occur up to 100 X per year

• 4,000 volt surges can occur up to 500 X per year

• 2,000 volt surges can occur up to 1,000 X per year

* According to the American National Standards Institute (ANSI) on power line surges

• Normal Power Company Switching Activities

• Air Conditioners, Furnaces, Refrigerators Cycling On & Off

• Copy Machines, Elevators, Motors Starting & Stopping

• Lightning