EnEnergy calculation on M30

[WellsGoFar]

1. every 1 voltage terminal work for 10 channel current. actually M30 have 3 group detector. every 10 channel current with 1 voltage. so total 10*3 group=30 channel. if you use detect <10 channel load, it's ok only connect with one voltage terminal.

2. No, can't do that. that is fixed. voltage line 1 use for energy1_x, voltage line 2 use for energy2_x, voltage line 3 use for energy3_x

3. Yes

Thank you. 

For US Split phase 240V circuits (2 120v lines on separate phases), can I put the clamp over both lines, or do I need 2 clamps to determine if the circuit is balanced?