I have the Sungoldpower 6kW non-solar inverter I purchased as a temporary solution to use a 48V LifePo4 battery in place of a backup generator until I am ready to upgrade to a real AIO inverter with solar in a year or so (probably will go with SolArk at that time).
I have an existing 2 pole manual transfer switch (which does not switch neutral) which was installed along with a L14-30 generator inlet on the outside of my house to be used with a floating neutral propane/gas generator. The transfer switch feeds a critical circuits subpanel. What I'm hoping to do is rewire so the inverter feeds the 'generator' side of the transfer switch, and then redirect the generator inlet to the input of the inverter so I can recharge the battery from the generator when it gets low. I will have to manually fire up the inverter and throw the transfer switch but that's fine.
I'm a bit confused about what to do with the neutral wire both from the generator and on the output side of the inverter. If you are familiar with this model of inverter you may know that it has no connector for the neutral on the input side (the wiring diagram in the manual simply says this wire is not required). It also comes from the factory with a green jumper wire which bonds the neutral and ground on the output side. I've already disconnected this and verified with a tester that the neutral and ground are not bonded once it is removed. The Sungoldpower manual also specifically mentions you should "never connect input neutral to output neutral". Here is the example wiring diagram from the manual:
What I am wondering is:
A) What do I do with the neutral output of the inverter, do I tie it back to the shared neutral bus inside the transfer switch which already has the neutral from the main panel (where it is tied to ground)? Or do I just leave it not connected?
B) Since there is no neutral input on the inverter do I just not connect the neutral from the generator inlet to anything, or should it be tied to the transfer switch neutral bar as well?
C) And lastly is it possible to also wire up a 120V outlet split off from the generator inlet before it goes to the inverter? In which case would the neutral for this outlet be connected to the generator (which has a floating neutral), transfer switch, or inverter (or a combination of these)?
I have an existing 2 pole manual transfer switch (which does not switch neutral) which was installed along with a L14-30 generator inlet on the outside of my house to be used with a floating neutral propane/gas generator. The transfer switch feeds a critical circuits subpanel. What I'm hoping to do is rewire so the inverter feeds the 'generator' side of the transfer switch, and then redirect the generator inlet to the input of the inverter so I can recharge the battery from the generator when it gets low. I will have to manually fire up the inverter and throw the transfer switch but that's fine.
I'm a bit confused about what to do with the neutral wire both from the generator and on the output side of the inverter. If you are familiar with this model of inverter you may know that it has no connector for the neutral on the input side (the wiring diagram in the manual simply says this wire is not required). It also comes from the factory with a green jumper wire which bonds the neutral and ground on the output side. I've already disconnected this and verified with a tester that the neutral and ground are not bonded once it is removed. The Sungoldpower manual also specifically mentions you should "never connect input neutral to output neutral". Here is the example wiring diagram from the manual:
What I am wondering is:
A) What do I do with the neutral output of the inverter, do I tie it back to the shared neutral bus inside the transfer switch which already has the neutral from the main panel (where it is tied to ground)? Or do I just leave it not connected?
B) Since there is no neutral input on the inverter do I just not connect the neutral from the generator inlet to anything, or should it be tied to the transfer switch neutral bar as well?
C) And lastly is it possible to also wire up a 120V outlet split off from the generator inlet before it goes to the inverter? In which case would the neutral for this outlet be connected to the generator (which has a floating neutral), transfer switch, or inverter (or a combination of these)?