ecpreston
New member
- Location
- Roanoke VA
when sourcing dedicated 3-phase metering voltage for an electronic meter such as
http://www.emon.com/products_class2000.html
NEC 240.15 *seems* to apply, but I'm not sure. Is it ok to use breaker ties on 3 single pole breakers or does it need to be a 3-phase with internal trip? NEC 2011 indicates that it might be ok to use a tie for 120/208, but not if I was metering 277/480?
Thanks for any help here.
http://www.emon.com/products_class2000.html
NEC 240.15 *seems* to apply, but I'm not sure. Is it ok to use breaker ties on 3 single pole breakers or does it need to be a 3-phase with internal trip? NEC 2011 indicates that it might be ok to use a tie for 120/208, but not if I was metering 277/480?
Thanks for any help here.