I'm not saying this person isn't at fault but there are other possibilities.
"All of those events when we see sharp voltage drops, it's something that's going wrong on the grid," Marshall said. "Most of them likely have an arc or a spark associated with them and they could start a fire."
Meanwhile, all morning and afternoon, firefighters were being dispatched to respond to electrical problems on power lines. On Jan. 7, firefighters were sent to locations in Altadena at least 35 times because of calls that had to do with wires down or arcing, records obtained by NPR from the Los Angeles County Fire Department show. Most of those dispatches — 30 of them — were made before 6 p.m., around when sparks were seen on transmission lines miles away in Eaton Canyon."