The California Public Utilities Commission has launched an investigation into an underground transformer explosion that injured two men in San Francisco's Bernal Heights neighborhood over the weekend.
The incident has also led a San Francisco supervisor, who represents the area where the explosion took place, to call for a hearing into the safety of PG&E's underground electricity infrastructure.
The Saturday morning explosion, near Coleridge Street and Heyman Avenue, was apparently the result of an equipment failure that occurred when a utility crew was working to fix a wire-down outage five blocks away.
It injured two men. Both were transported to San Francisco General Hospital, where one was treated and released quickly and the other was expected to be released Monday, according to Fire Department spokeswoman Mindy Talmadge. The men's injuries were minor, Talmadge said.
PG&E employees in the area responded quickly and helped get the two men to the hospital, company spokesman Joe Molica said in an email. Molica said PG&E worked to restore power by the following morning to all customers affected by the outage.