Powerwall / Powerwall+ is Discharging at Full Power
Powerwall / Powerwall+ is discharging at its maximum discharge, and the site reading increases as Powerwall / Powerwall+ discharges
Steps to Troubleshoot
- If using external Site CTs:
- Confirm the CTs are
facing the correct way:
- Locate the CT(s) used to measure the source that is displaying incorrect power flow readings.
- Verify the CT(s) are oriented such
that the label is facing toward the source (away from the breaker).
- Solar Current Transformer: Label toward the Inverter
- Site Current Transformer: Label toward the Grid
Figure 1. Tesla 100 A Current Transformer Orientation in Relation to Power Flow Figure 2. Neurio W2 CT Correctly Oriented to Measure Solar (top) and Incorrectly Oriented (bottom)
- Confirm the CTs are
measuring the correct phase:
- Locate the CT on the Meter page in Tesla One.
- Determine which phase the CT should
be measuring.
- Verify the CT is measuring the
correct phase.
Figure 3. Gateway CT Measuring Correct Phase (top) and Incorrect Phase (bottom) Figure 4. Neurio W2 CT Measuring Correct Phase (top) and Incorrect Phase (bottom) NoteIn the examples above, the CT is monitoring a solar inverter conductor, which is why only (1) CT is required.
- Confirm the CTs are
facing the correct way:
- For systems with Backup Gateway
2, verify the supply
conductors feeding the Gateway are connected to the Supply terminals:
- Verify any backup conductors are connected to the
Backup terminals (or the internal panelboard if it is connected to the Backup
terminals):
- Follow the steps in Gateway CTs and Neurio CTs are Overlapping to ensure site and solar loads are monitored only once, and the Powerwall conductors are not captured.