Using The Megohmmeter

Using The Megohmmeter


This is the second lesson in the Ammeters, Meggers, and Wheatstone Bridge Course. This lesson describes safety issues to consider when using a megohmmeter, how to select the correct megger for the job, setup, and the steps necessary to take a megger reading.

Module Objectives

  • Describe safety considerations when using a megohmmeter.
  • List considerations and procedures when selecting, setting up, and reading a megger.


The Ammeters, Meggers and Wheatstone Bridge course is designed for participants familiar with AC/DC theory, electrical safety, and electrical print reading. A basic understanding of electronic devices and circuits is recommended. The course describes megohmmeters, Wheatstone bridges, and clamp-on ammeters. It gives examples of the use of these instruments, identifies their components, and defines their functions. The lessons also describe safety and selection considerations for their use, how to set up the instruments, how to connect them to the systems under test, and how to take and read measurements.


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