Three-Phase
Board Upgrades

Three-phase board upgrades for machinery and other heavy loads

Three-phase supplies exist because some loads cannot be run properly from a single phase. When machinery, HVAC or other heavy equipment is added, the board that feeds them may not have the ways, the capacity or the protection the new load needs. An upgrade replaces or enlarges that board and balances the loads across the phases so one phase is not doing all the work.