The outage was caused by a faulty fuse, which triggered a cascading series of failures in power equipment in one of The Planet’s Dallas data centers. The bad fuse triggered an overload that knocked out two uninterruptible power supply (UPS) units, as well as equipment that distributes power throughout the data center area. “Emergency teams were notified and the power was restored within 20 minutes,” The Planet said in a message to customers.” The power supply remained erratic for several hours until the faulty fuse was isolated and replaced.