Ground Verification

The capabilities of grounding and wiring verification devices include:

• Detecting isolated ground shorts and neutral-ground bonds
  
• Ground impedance and neutral impedance measurement or indication
  
• Detecting open grounds, open neutrals, and open hot wires
  

• Detecting hot/neutral reversals or neutral/ground reversals

Three-phase wiring testers should also test for phase rotation, and phase-to-phase voltages.

Customer Applications

Ground verification test devices can be quite simple, and provide an excellent initial test for circuit integrity. They detect many problems without requiring detailed monitoring with expensive instruments.

Diagnosing Symptoms

More than 80 percent of power quality problems reported by customers are caused by problems with wiring and/or grounding within the facility. These problems can be identified with special test devices for detecting wiring and grounding problems; and also by visual inspection of wiring, connections, and panel boxes.