The current stops here

Voltage potential between phase and ground has to change for current to flow. Therefore, when Phaseback prevents damage that could be caused by a 200, 000 volt spike being added to a phase on the distribution system it cannot cause damage because just as a journey of a 1000 miles starts with the first step, so also does the thousands of amperes start with the first amp. Though it may move at approximately 186,000 miles per second, Phaseback operates at the same speed, therefore not enough voltage will change to allow current flow to damage anything on the distribution system.