As someone who works in the power industry, the blackout of entire SDG&E load should probably not have happened. The failure of one transmission line should not have caused this to happen.

The engineers are going to have to go through the logs to figure out the sequence of events. Then they can determine if this was equipment failure, process failure, or operational error.

I am supposed to say this is my opinion and not those of my employer.

Edited by Paul Nelson (09-12-2011 05:04:36)