Voltage and Current Mismatch — Wiring fault detected

What does V oc and I sc differ from specifications mean?

If the measured open circuit voltage (Voc) or short circuit current (Isc) of the solar modules differ significantly from their stated specifications, it suggests a wiring problem within the system.

• Incorrect wiring connections.
• Loose or damaged cables.
• Incorrectly sized cables.

Click steps to track your progress.

1. 1

   Verify that all system wiring is correct before commissioning the modules.

2. 2

   Check that plug connectors are firmly connected and wiring is secure and tight.

3. 3

   Ensure the correct DC polarity is observed at all times.

4. 4

   Consult the 'COMPONENT PLUG AND DC CABLE SIZING TABLE' for correct cable specifications.

5. 5

   Contact a qualified solar installer to diagnose and repair wiring faults.