How To Wire a 3-Phase kWh meter from the Supply to The Main Distribution Board?

How To Wire a 3-Phase kWh meter from the Supply to The Main Distribution Board?

How To Wire a 3-Phase ( Three phase or Poly Phase (3-phase,4 Wire) kWh meter (Digital or Analog Energy Meter) from the Supply to The Main Distribution Board?
 OR The Connection of 3-Phase ( Three phase or Poly Phase (3-phase,4 Wire)) kWh meter (Digital or Analog Energy Meter) from the Supply to The Main Distribution Board
OR The connection and wiring diagram of 3-Phase ( Three phase or Poly Phase (3-phase,4 Wire)) kWh meter (Digital or Analog Energy Meter) from the Supply to The Main Distribution Board.

 This is the most common inner connection of of 3-Phase ( Three phase or Poly Phase (3-phase,4 Wire)) kWh meter (Digital or Analog Energy Meter) also represent the basic idea of the above story.