Just as an FYI, the new SP5K and SP10K now appear to have a programmable N/G function...
I have an older version of the SP5K running in parallel with an Eco Worthy 5k for a while now.
The PoWMr is set to be the master Inverter and handles the L1 leg and the Eco Worthy handles the L2 leg.
This is an off-grid setup where the is nothing connected to utility and the AIOs feed a 100A load panel with N/G bonded.
Neither the PoWMr nor the Eco Worthy AIOs have a programmable N/G realy function as far as I can tell.
However, I just finished installing a brand new PoWMr SP5K parallel unit at another location (running as a stand alone unit handling 120V) with utility backup and have discovered that they have a setting #63 that supposedly handles the N/G bonding "automatically" and can be disabled. The PoWMr and Eco Worthy website manuals do not show this, but the new manual that came with the new AIO does show it. On this new install, I did enable settings #63 and it works fine but I don't undestand exactly what it does...
Now this is not a surprise for me as I had been investigating the Sunsmart SP10K specs to see how they handle the N/G bonding and this is the response I got from PoWMr:
"Shouldn't the US split phase be an N-PE connection from what I understand? Is your local power required to split N-PE? Our inverter is set to automatically switch N-PE in the 63 settings, but this too only changes the N-PE separation and connection of the utility power. Please change it to ENA first, I don't know if this with work for you, you can try to see if it meets your requirements."
What say you?
I have an older version of the SP5K running in parallel with an Eco Worthy 5k for a while now.
The PoWMr is set to be the master Inverter and handles the L1 leg and the Eco Worthy handles the L2 leg.
This is an off-grid setup where the is nothing connected to utility and the AIOs feed a 100A load panel with N/G bonded.
Neither the PoWMr nor the Eco Worthy AIOs have a programmable N/G realy function as far as I can tell.
However, I just finished installing a brand new PoWMr SP5K parallel unit at another location (running as a stand alone unit handling 120V) with utility backup and have discovered that they have a setting #63 that supposedly handles the N/G bonding "automatically" and can be disabled. The PoWMr and Eco Worthy website manuals do not show this, but the new manual that came with the new AIO does show it. On this new install, I did enable settings #63 and it works fine but I don't undestand exactly what it does...
Now this is not a surprise for me as I had been investigating the Sunsmart SP10K specs to see how they handle the N/G bonding and this is the response I got from PoWMr:
"Shouldn't the US split phase be an N-PE connection from what I understand? Is your local power required to split N-PE? Our inverter is set to automatically switch N-PE in the 63 settings, but this too only changes the N-PE separation and connection of the utility power. Please change it to ENA first, I don't know if this with work for you, you can try to see if it meets your requirements."
What say you?
