When configuring the production meter, what 2 things can you verify within the Installer Toolkit that the production CT is measuring PV production correctly?

• A. Current power production is not reading any negative values
• B. Meter reading ITK and that it is somewhat close to what you'd be producing on the roof
• C. Current power production drops to zero when the PV breakers are switched off
• D. All of the above

Answer: (D)

The test is about confirming that the production current transformer (CT) is measuring PV output accurately using the Installer Toolkit. You verify three practical signs: first, the current production reading should not be negative, since a reversed polarity or mis-wired CT can produce negative values; second, the Installer Toolkit’s PV production readout should be in the same general range as the actual roof production, showing that the readings track real output; third, when you switch off the PV breakers, the production reading should drop to zero, proving the CT is measuring the PV side and not a constant or phantom load. When all these conditions are met, you have good evidence the production CT is measuring PV production correctly. If any of these checks fail, recheck CT orientation, wiring, and PV isolation to diagnose the issue.