Improper Termination Causes Flashover

Brief Description of Incident:

A troubleman while performing routine switching for load reasons was operating various overhead switches with permission of the control center. Arriving at a newly installed switch the troubleman proceeded to close the switch which unfortunately caused a large outage. Further investigation revealed that the newly installed switch was not properly terminated resulting in a phase to phase fault de-energizing two stations and many customers. The switch was not damaged and no injuries were reported.