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Polarity from Projoy FM to Inverter

  • 23-02-2023 10:22am
    Registered Users Posts: 429 ✭✭

    I powered on my Sofar HYD 6000-EP inverter after DIY installation and noticed that it's in standby mode and PV1 and PV2 set to NA (when sun is shining).

    I measured the DC voltage from each string and I'm getting around 304v (8am). I then measured the DC voltage on the cables coming from the Projoy Fireswitch and I'm seeing -304v (where the polarity has changed + to -). Is this my issue?

    Silly question but should the positive out from the Projoy goto the negative in on the Sofar, if so then yes that's where I messed up. I think I just rushed and plugged positive into Projoy and then as my cable is red I put a positive connection on the opposite end.