Emergency services rushed to a building in central Wellington after an electrical fire was discovered shortly after 9am today.
Thorndon senior station officer Clarke Townsley said lack of staff meant firefighters could not enter the building as soon as they would have liked to track down the source of the fire.
When they did enter, they found an electrical board was ablaze, and put it out, he said.
Firefighters had been "anxious" to begin with as the building on Manners St is five storeys high, and Wellington only has appliances that can reach about three storeys, Townsley said.