Last summer, the electric bill was especially high (even compared to the previous hot summer). The facility manager hired an HVAC firm to thoroughly examine the system. The firm found and repaired many problems, including ductwork leaks. But this firm normally subcontracts the electrical work because it doesn’t have an electrical engineer or licensed electrician on staff. The firm’s mechanical engineer overseeing the project said the problems would account for some of the increase
Electrical Troubleshooting Quiz, Dec. 10, 2013
With many electrical tests, anomalies may not show up at partial load.