hi guys, just want to ask, an open loop has three points A,B, C and each point serving a load. there is only one source (a subtransmission 69kV line from a substation), connected at point A. The loop is open at line segment AC (the circuit breaker at point C, connecting the segment AC is open). The voltage at point A,B and C are almost equal, or there is only a small difference in magnitude. my question is this: Since there is only one source, which means the frequency (60Hz) is the same at all points, is it possible to close the loop (circuit breaker) at point C? What would be the effect of closing? what are the standards parameters?