Reminds me of an inciden about 15 years ago in Nashville where a couple from Oregon was walking on a sidewalk when a transformer literally exploded underneath them. They were both burned very badly and required months of hospital care. The city of Nashville had passed a law limiting their liability to $100k per event even though the medical bill was over $1 million.
I will guess that the city of Nashville did not make or own or operate or maintain or sell electricity from the transformer.
Nashville has some liability since it is their sidewalk.
But full liability falls elsewhere, presumably on the power company and the manufacturer.