Johannesburg - Power supply was interrupted in parts of Ekurhuleni on Saturday due to an explosion of an incoming circuit breaker, the municipality said.
"Engineers are replacing the incoming circuit breaker and other damaged equipment, a process that is expected to be completed by 09:00 on Sunday morning," spokesperson Mandlakazi Mpahlwa-Sigcawu said.
Affected areas included Parkrand, Sunward Park, Freeway Park, parts of central business district and Boksburg East.
They had been without power since 07:00 on Saturday.