journeyman0217
Senior Member
- Location
- philadelphia,pa
wondering if someone could tell me when current transformers are used on a service? I read in a COMMERCIAL electrical book that low voltage metering is required for services over 200 amps? I know that residential services of 400 amps do not require ct's, so why are they required in commercial services over 200amps? Is this something that the local utility company would say when they want ct's installed? thanks!