In a filing submitted to state utility regulators Thursday, Southern California Edison (SCE) officials stated that the company’s equipment was likely the cause of the Hurst Fire in Sylmar last month.

And each time, the fires tore through transmission towers or old power poles ... investigator concluded SCE had not properly maintained two parts — a Y-shaped insulator fitting and a skyline "jumper ...

Transmission towers, which carry electricity over long distances, are much taller than lower-voltage distribution poles, which are used to deliver power to homes and businesses. They are more ...