Issue
The User would like to use a PT (potential transformer) or a CT (current transformer) for two separate meters.

Product Line
PowerLogic and ION Meters

Environment
Current Transformers and Potential Transformers

Cause
Typically each power meter has its own set of CT's and PT's. It may be desirable to share a voltage or current source from one of the PT's or CT's. 

Resolution
The ION and PM meters can share CTs and PTs with other meters.

In this case the meters will be displaying the same voltage, current and power.  Sometimes this connection may be used in conjunction with a relay.   

• 
  Take PM1200 and three phase 4 wire connection for example, the wiring should be like below:
  
  
  Also,this wiring can be used in other PM and ION meters.