A “120/240” system in North America and some Latin American countries, is the name for the common incoming mains on an electrical system powering up most homes and small industrial buildings (2 Hots and a Neutral, with or without or Ground).
More info about "120/240" systems here: https://en.wikipedia.org/wiki/Split-phase_electric_power
What is a 120/240V Electrical System? Print
Modified on: Wed, 6 May, 2026 at 11:10 AM
Did you find it helpful? Yes No
Send feedbackSorry we couldn't be helpful. Help us improve this article with your feedback.