[pdkl95]

PG&E apparently[1] has a project to improve the infrastructure in some areas. They are replacing the existing 12kVA lines with insulated 15kVA lines that still carry 12kVA service. This should provide a larger margin for transient problems and protect against some types of arcing. They are also retrofitting some poles so they hold the individual cables farther apart.

However, the real problem is trees/etc growing too close to the lines, compounded by the extra dry drought conditions throughout CA. Regardless of the type of cable or other technical safety features, power lines are always going to be a fire hazard if they don't receive regular inspection and maintenance. The lesson from these fires is that the existing maintenance schedule is severely inadequate.

[1] https://www.youtube.com/watch?v=L2nWuZ8J0Go