Hello, noob here. Finally plucked up the energy and courage to ask on here to help figure out this issue.
Been trying to figure out the neutral bond conundrum for ages and cannot figure out the best way forwad.
Living in france off grid.
Bonded hyundai 6600 selr 3000rpm generator (with rcd, gfci fitted) ()
connected to the hybrid epever upower hi5000 inverter. (floating neutral in bypass mode and when its supplying power from panel and or batteries)
7kw solar panels split n two series strings and connecting in parallel at the combiner box.
Fully off grid no utility.
4 pylontech us2000 (2 of which are us2000c model) in one stack connected to the inverter.
240v 50hz single phase. 1 hot, 1 neutral,
Output of the inverter goes into the main breaker panel for the house. which has a rcd the neutral is bonded before the rcd and the rcd feeds a few mcbs which then feed the circuits for the house.
panel bus bar connected to safety ground which is a ground rod outside the house.
Now as you know there is an issue when the generator is running as we have two NG bonds, one in the generator one in the panel. Seems like if the generator was not bonded I would be good to go.
Only way I can can get the genertor to not trip with this setup is to not connect the generator ground to the main panel. Luckily have not had to use the generator too much. But i need to solve this situation asap as I cannot rest at night When solar and batteries are the power source everything is honky dory. But when i need to fire up the generator I am paranoid about what and who I could fry.
is there a way to solve this? relaiably disconnect the neutral bond in a safe way when the generator is on by some sort of automatic transfer or relay/ contactor?
I dont want to remove the bond from the generator as I took a look and there is too much wiring going on in there for my liking. Plus if someone used it standalone etc could be issues
Or am i stuck with having to sell either the inverter or generator and get one that switches the bond internally (inverter) or an unbonded generator? both options I would like to avoid if possible. If i had to though I would probably opt for changing out the inverter
Please help. I have read most of the other threads and they seem to talk about automatic transfer switch but as far as i can tell that wont work in my case because the generator is needed to both charge the batteries and feed the house when the batteries are low.
thanks in advance
Been trying to figure out the neutral bond conundrum for ages and cannot figure out the best way forwad.
Living in france off grid.
Bonded hyundai 6600 selr 3000rpm generator (with rcd, gfci fitted) ()
connected to the hybrid epever upower hi5000 inverter. (floating neutral in bypass mode and when its supplying power from panel and or batteries)
7kw solar panels split n two series strings and connecting in parallel at the combiner box.
Fully off grid no utility.
4 pylontech us2000 (2 of which are us2000c model) in one stack connected to the inverter.
240v 50hz single phase. 1 hot, 1 neutral,
Output of the inverter goes into the main breaker panel for the house. which has a rcd the neutral is bonded before the rcd and the rcd feeds a few mcbs which then feed the circuits for the house.
panel bus bar connected to safety ground which is a ground rod outside the house.
Now as you know there is an issue when the generator is running as we have two NG bonds, one in the generator one in the panel. Seems like if the generator was not bonded I would be good to go.
Only way I can can get the genertor to not trip with this setup is to not connect the generator ground to the main panel. Luckily have not had to use the generator too much. But i need to solve this situation asap as I cannot rest at night When solar and batteries are the power source everything is honky dory. But when i need to fire up the generator I am paranoid about what and who I could fry.
is there a way to solve this? relaiably disconnect the neutral bond in a safe way when the generator is on by some sort of automatic transfer or relay/ contactor?
I dont want to remove the bond from the generator as I took a look and there is too much wiring going on in there for my liking. Plus if someone used it standalone etc could be issues
Or am i stuck with having to sell either the inverter or generator and get one that switches the bond internally (inverter) or an unbonded generator? both options I would like to avoid if possible. If i had to though I would probably opt for changing out the inverter
Please help. I have read most of the other threads and they seem to talk about automatic transfer switch but as far as i can tell that wont work in my case because the generator is needed to both charge the batteries and feed the house when the batteries are low.
thanks in advance
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