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Identifying Loose Neutrals

Category: Power Quality, PQ Data Analysis

Learn how to identify loose neutrals and their effects on electrical equipment, along with how to utilize PMI's PQ equipment to detect loose neutrals.


Loose Neutrals can cause higher and lower than normal voltages and can sometimes damage electrical and electronic equipment when load imbalances are large. Loose Neutrals need to be detected and repaired quickly to minimized property damage.


Changes in light intensity can be a warning sign of a loose neutral. Light intensity changes can also be caused by other electrical issues, such as a power line regulator or changes in large loads in a small amount of time. PMI’s Provision Loose Neutral Report is an excellent way of verifying and identifying loose neutral connection so the loose or open neutrals can be repaired as soon as possible.


When one voltage leg increases in voltage at the same time the other leg decreases in voltage while the sum stays close to twice the nominal voltage, this is a sure sign of a loose or open neutral connection. Provision’s Loose Neutral Report is especially designed to trigger on a loose neutral condition and clearly point out and record the voltage changes from each leg to neutral, and leg to leg allowing the operator to be able analyze the extent of the loose neutral condition.


This white paper includes:

  • Overview
  • Loose Neutral Defined
  • Neutral Report in ProVision

Download White Paper Here