He says the decision was made to alert parents that the school would close after morning tea at 11.15am. However, power came back on just 15 minutes later.
Davis says he then pulled the alert to parents, telling them they would remain open.
Earlier in the term, he says it was a pole fuse that cut power. Again, he says, Vector told them they would need to close for the day but electricity was restored in under two hours.
Two hours is the maximum amount of time that the college's staff and students are allowed to stay on site without power.
Davis says if this happens again in the near future, they will be waiting until closer to the two-hour mark before deciding it was necessary to close.
The school has 1458 students on its roll.