hi!
am working on designing an electricity meter which will be measuring three electricity lines instead on three electricity meters measuring three lines. I have done a review and found that I can connect three pic microcontrollers in a parallel connection. need more help in how I can finalize this project.
do you mean three different phases ? If so you can make it and call it as a 3phase energy meter.
And I dont think you need 3 different microcontrollers in one unit to process 3 different lines. One microcontroller can do it.