LVX6048 ground bond screw removal- feeding main panel

Danny1987

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Feb 19, 2022
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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.
 

FilterGuy

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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
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.
 

ChrisG

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Sep 23, 2019
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@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

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@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?
 

FilterGuy

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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.
.

 
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