If you want to add a 2nd set of Current Transformers through 1 meter, you will need:
- 3 x 2 way summation CTs (SUM-CT-2W).
- 6 x CTs (2 x CTs per Summation CT).
Because the meter is totalling the 2 x sets of CTs, the CT ratio of the meter must be doubled.
100A supply, the meter needs to be set at 200A.