Take this quick quiz and learn common causes of power quality problems. Wiring errors are the most common source of power quality problems. Most result from a violation of the National Electric Code . The National Electric Code allows use of the conduit system as ground reference for office equipment. But over time, the conduit connections deteriorate, which causes equipment to operate unreliably.
Ground conductors minimize the problem.
These items draw a lot of electricity, causing problems with computers. Your risk of problems is even greater if you use a UPS because the UPS will react to the voltage changes caused by frequent cycling of this equipment. This runs the UPS battery down, reducing your protection. You may have lower voltages than normal. You should directly connect all equipment to a receptacle.