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LVX6048 ground bond screw removal- feeding main panel

Danny1987

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Title pretty much says it all. I spoke with Ian at watts24 and he advised the ground/neutral bond screw inside the inverter can be removed when feeding into a main panel, which has a already bonded N/G.
Anyone have experience running the LVX6048 this way. Or have an idea if the screw removal method is a safe method, any drawbacks? Thank you.
 
Title pretty much says it all. I spoke with Ian at watts24 and he advised the ground/neutral bond screw inside the inverter can be removed when feeding into a main panel, which has a already bonded N/G.
Anyone have experience running the LVX6048 this way. Or have an idea if the screw removal method is a safe method, any drawbacks
If you have nothing feeding the AC-Input then what he is advising is correct. However, be sure you have a transfer switch or a generator lockout that prevents both the inverter and grid from feeding the main panel at the same time.

If you have an AC input to the inverter.... it must not have an N-G bond.
 
@FilterGuy
So in the case Of MSP(G/N Bond)->AC-In/Inverter->Sub panel, remove the inverter bonding screw, correct? The bond is already done at the MSP.

If inverter feeding MSP like OP
Mentioned remove the inverter bond screw also as the MSP is bonded, correct?
 
@FilterGuy
So in the case Of MSP(G/N Bond)->AC-In/Inverter->Sub panel, remove the inverter bonding screw, correct? The bond is already done at the MSP.

If inverter feeding MSP like OP
Mentioned remove the inverter bond screw also as the MSP is bonded, correct?
I'm sorry..... what is MSP?
 
Main Service Panel where N/G typically is. Sorry.
No problem..... I am TLA-challenged
So in the case Of MSP(G/N Bond)->AC-In/Inverter->Sub panel, remove the inverter bonding screw, correct? The bond is already done at the MSP.
It depends.

If it is a single inverter that does dynamic NG bonding, then no; you should not remove the screw.
If it is stacked with more than one inverter then Yes, you should remove the screw on all but one of them.
.

 
"It depends.

If it is a single inverter that does dynamic NG bonding, then no; you should not remove the screw.
If it is stacked with more than one inverter then Yes, you should remove the screw on all but one of them."
I have two EG4 inverters which are feeding a transfer switch that is in the main panel in the house where neutral and ground are of course bonded. Both inverter internal bonding screws are removed and the neutral, ground, and L1, and L2 from the inverters are kept separate and run directly to the xfer switch in the main panel. I have no AC input at this time. I followed Will and Ian's advice about removing the screws. Is this done correctly?
 
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Anyone have a pic to where the screw its at? I opened up and could not find a obvious screw.

Have 19.2 v between ground and neutral straight out of inverter.
 
Just for posterity.... (ignore the burned-out negative buss bar connection :rolleyes: )

Bonding screw on the LVX6048 is here:
 

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Just for posterity.... (ignore the burned-out negative buss bar connection :rolleyes: )

Bonding screw on the LVX6048 is here:
That looks like just a regular board ground.
I would expect to find the bonding screw on the AC side. Near the bypass relays.
 
That looks like just a regular board ground.
I would expect to find the bonding screw on the AC side. Near the bypass relays.
Hmmm, well poop. There are other ground screws but they are all a different style head, so I figured that was it. You think it is on the smalled pcb on the left?
 

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