99-Year-Old Transmission Tower Seen as Possible Cause of Devastating Calif. Wildfire

Fire flames

Sources say investigators are zeroing in on this "transpositional" tower that helps switch power among transmission lines on the Caribou-Palermo circuit.

December 11, 2018
Contra Costa Times - Engineering News-Record

Dec. 08 --PULGA -- With winds gusting around 50 mph in the morning hours of Nov. 8 , portions of a PG&E steel lattice transmission tower -- exposed to the elements high on a ridgetop and originally built when Woodrow Wilson was president -- failed.
As high-voltage lines got loose and whipped around, striking the metal tower, molten aluminum and metal sprayed across tinder dry vegetation, igniting the brush. Arriving firefighters could only watch as the blaze underneath the power lines quickly spread to wild timber and brush.

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