Facility engineers who must maintain or oversee installation of V-belts throughout an HVAC system: take these dozen tips for proper tensioning, followed by more on how to identify and troubleshoot the consequences of improper tension.

Once we distinguish voltage unbalance from voltage variation, the need to tackle the issue intelligently becomes even more clear. Learn about common causes and effects, testing for unbalanced voltages and single-phasing, and ways to correct the problem if it does manage to arise.