The CT clamp on the EV charger (single-phase 7.3kW with solar divert) is fitted in the wrong orientation. Anti-backflow and solar divert functions will fail silently.
Common causes
CT arrow direction incorrect during installationCT fitted around wrong conductor (L+N together instead of L only)
What to check
STEP 1
Check CT clamp arrow: must point toward the charger (away from grid/supply). Reverse CT orientation if pointing the wrong way. Check CT is fitted around the single Live conductor only — not both L and N
STEP 2
In FoxSwitch app, verify solar divert is active and showing correct import/export readings after correcting CT direction
Escalate if
CT direction correct and readings still reversed — swap the CT sense wire polarity at the charger terminal
Need full interactive diagnosis?
Faultpath walks you through decision trees, fault codes, and commissioning — built for solar & battery engineers.