Common Mode Voltage A voltage on the neutral wire of the power wiring, when compared to the ground wire, where the ground wire is assumed to be the reference. By Jim Minadeo|2024-08-14T09:15:52-04:0004/02/21|Glossary| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: Jim Minadeo