Hi,
Our solar inverter is connected to a dedicated circuit from an RCBO in a CU in our garage. The RCBO was chosen, supplied and installed by the solar installers. The cable runs up from the CU in plastic trunking, goes through a concrete block wall to the next room, then is clipped to the wall and along a purlin at ceiling height before dropping down to the inverter in plastic conduit.
Since installation last May the RCBO has tripped twice for no apparent reason. I haven't had any feedback yet from the installer, but after the first trip they said there was no indication of any fault with the inverter. I have suggested that they replace the RCBO just for elimination.
However looking at information from the manufacturer, Solaredge, it seems they're not particularly keen on an external RCD. They recommend that if one if fitted it should be 100mA or 300mA, and there's a comment that where "local codes" require a 30mA RCD then there may be nuisance trips.
But before exploring that further I'd just like to confirm the current requirements. From what I've described, does it sound as if RCD protection is required on that particular circuit cable run?
Thanks,
Our solar inverter is connected to a dedicated circuit from an RCBO in a CU in our garage. The RCBO was chosen, supplied and installed by the solar installers. The cable runs up from the CU in plastic trunking, goes through a concrete block wall to the next room, then is clipped to the wall and along a purlin at ceiling height before dropping down to the inverter in plastic conduit.
Since installation last May the RCBO has tripped twice for no apparent reason. I haven't had any feedback yet from the installer, but after the first trip they said there was no indication of any fault with the inverter. I have suggested that they replace the RCBO just for elimination.
However looking at information from the manufacturer, Solaredge, it seems they're not particularly keen on an external RCD. They recommend that if one if fitted it should be 100mA or 300mA, and there's a comment that where "local codes" require a 30mA RCD then there may be nuisance trips.
But before exploring that further I'd just like to confirm the current requirements. From what I've described, does it sound as if RCD protection is required on that particular circuit cable run?
Thanks,