Which statement about production CT verification is true?

• A. Current power production is not reading any negative values
• B. ITK reading is somewhat close to roof production
• C. Current power production drops to zero when PV breakers are switched off
• D. All of the above

Answer: (D)

Production CT verification checks that the measured PV output matches what the system is actually producing and reacts correctly to changes. In a properly configured setup, the current power production should not show negative values because the PV system contributes power in one direction. A negative value would signal something abnormal, such as reverse flow or a sign/orientation issue with the CT.

The ITK reading being close to the roof production means the measurement channel used for verification is accurately reflecting the actual rooftop output; a good alignment between these numbers gives confidence that the CT and meters are reading correctly.

If you switch off the PV breakers, the production should drop to zero, since the generation source is disconnected. The CT reading will follow and show no production.

Since all these observable behaviors align—no negative production readings under normal operation, ITK tracking the roof production, and zero production when PV is shut off—this statement set accurately describes production CT verification.