Grid CT Troubleshooting

1. Split CT installed in wrong position

According to the Split CT application scenario, select the corresponding installation position schematic to check whether the Split CT installation position is correct.
Split CT 4 should be installed on the L1 bar and Split CT 3 should be installed on the L2 bar.
Note: The location of the L1 bar and L2 bar in the distribution panel may vary from manufacturer to manufacturer.
Split CT 2 should be installed on the L2 cable.
Split CT 1 should be installed on the L2 bar of the PV Subpanel.

1.1 Scenario A Main Panel Consumption Metering

1.2 Scenarios B line-side Sub-Panel Consumption Metering

1.3 Scenarios C 120% Rule PCS Conductor Limiting Feature

2. Split CT is installed in the wrong direction

Check that the Split CT is installed in the correct direction.
According to the Split CT application scenario, select the corresponding installation direction schematic to check whether the Split CT installation direction is correct.
The direction of the arrow on the Split CT should match the direction of the arrow in the installation schematic.
 

3. Split CT wiring error

According to the Split CT application scenario, select the corresponding wiring schematic to check whether the Split CT wiring is correct.

3.1 Scenario A: Main Panel Consumption Metering

Split CT 4 should be connected to the CT 4 connector of the EMS module, white cable to "+", black cable to "-".
Split CT 3 should be connected to the CT 3 connector of the EMS module, white cable to "+", black cable to "-".
Note: This scenario requires the removal of the CT 1 and CT 2 cables that came with the EMS module from the factory.
 

3.2 Scenarios B: line-side Sub-Panel Consumption Metering

Split CT 4 should be connected to the CT 4 connector of the EMS module, white cable to "+", black cable to "-".
Split CT 3 should be connected to the CT 3 connector of the EMS module, white cable to "+", black cable to "-".
 

3.3 Scenarios C: 120% Rule PCS Conductor Limiting Feature

Split CT 4 and Split CT 3 should be connected to the GEN DRV connector of the EMS module with the following wire sequence from bottom to top as per the schematic: Split CT 4 white wire, Split CT 4 black wire, Split CT 3 white wire, Split CT 3 black wire.
 
If the problem still cannot be solved, please contact FranklinWH Customer Service for assistance.

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