What are the impacts of electrode phase sequence on the use of electrode?

In EAF furnace steelmaking process, the phase sequence of the electrode has a great influence on electrode loosen and breakage. If the sequence is clockwise, electrode will get loose after powered on and used for a period of time, which will easily cause electrode loose or nipple breakage. The correct phase sequence is anti-clockwise. In that way, electrode joint will be more and more tight in use.