Victron Phoenix inverter grounding

[BlueMarblePA]

In this video, he opens up the Victron Phoenix, and he finds two options -- Floating ground versus earth ground. He pulls out the jumper from floating and plugs it into ground. I assume he then takes the chassis ground and connects that to earth ground. Should I do the same for my off-grid shed installation?

 

[sunshine_eggo]

You should have only one N-G bond in an entire system. If you already have one (like at the panel), the inverter should float. If you don't already have one, the inverter should be N-G bonded.

In either case, the grounding lug should be connected to the existing ground.

 

[mikefitz]

Battery negative to 'ground' also, inverter case cable link to 'ground' should be one size down on DC inverter feed cable.

 

[BlueMarblePA]

You should have only one N-G bond in an entire system. If you already have one (like at the panel), the inverter should float. If you don't already have one, the inverter should be N-G bonded.

In either case, the grounding lug should be connected to the existing ground.

In my shed I don't have a panel. Hence, the only ac outlet will be the Phoenix inverter outlet which made me think I need to ground the inverter.

I am planning to drive an eight foot copper ground into earth this weekend. I will ground the solar panels and the inverter to this rod.

 

[BlueMarblePA]

Battery negative to 'ground' also, inverter case cable link to 'ground' should be one size down on DC inverter feed cable.

I have to research battery negative to ground.

I have not yet figured out size of my MPPT to 24v battery and then battery to victron 24/800watt inverter yet. But based on your comments I will size the ground one size down

 

[sunshine_eggo]

In my shed I don't have a panel. Hence, the only ac outlet will be the Phoenix inverter outlet which made me think I need to ground the inverter.

I am planning to drive an eight foot copper ground into earth this weekend. I will ground the solar panels and the inverter to this rod.

In this case, the N-G bond should be in the Inverter.

 

[BlueMarblePA]

In this case, the N-G bond should be in the Inverter.

In this diagram, I am creating the ground from the inverter chassis to earth ground. Do I need to also earth ground the battery terminal negative? I was not planning on doing that. I am also going to earth ground my solar panel pv array.

 

[sunshine_eggo]

Yep.

For the PV, make sure you only ground the panel frames, not the PV (-).

 

[BlueMarblePA]

In this video at 14:47 he does a great job of explaining why small solar generators with isolated transformers IT do not use an earth ground.

 

[elvis-II]

I plan to use a Victron Phoenix 1200 inverter connected to a transfer switch (ProTran2) grounded to the main panel. The inverter came with a GFCI outlet and the bonding conector inside came in the neutral bonded connector. Can anyone tell me if I need to move to the floating neutral position since the GFCI will be permanently connected to the transfer switch. Will the GFCI will pop every time i turn off or on the breaker?

 

[BlueMarblePA]

I plan to use a Victron Phoenix 1200 inverter connected to a transfer switch (ProTran2) grounded to the main panel. The inverter came with a GFCI outlet and the bonding conector inside came in the neutral bonded connector. Can anyone tell me if I need to move to the floating neutral position since the GFCI will be permanently connected to the transfer switch. Will the GFCI will pop every time i turn off or on the breaker?

I am not an expert and am just a beginner. But I think you should keep it floating. Let the neutral to ground bond happen at one place - - main panel.

 

[elvis-II]

I am not an expert and am just a beginner. But I think you should keep it floating. Let the neutral to ground bond happen at one place - - main panel.

I connected it with the floating neutral. When i used the default setting of the inverter, (neutral bonded) the GFCI outlet breaker was popping out. The only complaint is i am noticing (only me, almost unnoticeable ) some flickering on some LED (dimmable) lights. The case is grounded to the main inverter also. Thanks