Neutral to Ground Bond

One of the advantages of power-line conditioners is that they eliminate almost all common-mode noise. They do this through the neutral-to-ground bond. This bond is required for safety reasons by the National Electrical Code (NEC), and must be attached to the secondary neutral of the transformer. This creates a near zero impedance between the neutral and ground near your computer. Since common-mode noise is defined as noise between the neutral and its associated ground, this bond effectively eliminates it.

This bond is particularly important for people with computers since printers and other peripherals are major sources for common-mode noise. Providing a neutral-to-ground bond close to the computer not only eliminates this noise coming in from more distant sources, it also eliminates it coming from the printer sitting next to your computer desk.