Collection: Current Transformers

Current transformers (CTs) are sized based on amps. Most buildings require two 150A CTs for the 200A / 225A mains. Circuits within the panel commonly require 20A or 50A CTs if they are 70A or smaller. A 20A CT is suitable for a 30A breaker. Call +1-207-370-6517 or email sales@powerwisesystems.com for assistance.