UPDATE A fire at an Eversource substation in Norwalk knocked out power tonight to more than 6,200 Norwalk customers and also spread over to 149 Westport customers.
The numbers were reported by the Eversource outage map.
Norwalk fire officials said on arrival at the New Canaan substation heavy fire was visible from an elevated switch gear cabinet that controls a 13,80-volt transmission line.
Eversource technicians were on scene immediately to start the process of shutting down the adjacent gear switches so the firefighters could safely operate and extinguish the fire, said Deputy Chief Edward Prescott.
