A: Yes, please refer to the following application wiring diagram:  
precautions:
There are 3 design methods of communication port with MCU:
1. Three UART ports of MCU are connected to UART ports of three modules
2. One UART port of MCU, and the UART ports of three modules are connected through a multiplexer (such as CD4051)
3. MCU and three modules with different addresses are connected through 485 bus
Measurement functions that can be realized:
A. Voltage, current, power, power factor and electric energy of phase B and C.
The combined power and electric energy can be calculated by MCU.
Unable to measure: angle between three phases a, B and C and total power factor.