The manuals for all of EG4s inverters lack any information about the bonding they do or do not do.but the manual does not say anything about it.
When did this start and does this apply to the 6500EX as well?However, It turns out that EG4 started shipping all of their inverters without the bonding screw
I don't have an exact date, but relatively recently.When did this start
I just received my replacement units a few days ago and I can confirm both units had the bonding screws removed. I had earlier units with the manufactured sticker showing 07/22 and those had the bonding screws. The newer units I have show 10/22 and those have them removed.
In a dialog with EG4 tech support, they said it applies to all models.does this apply to the 6500EX as well?
Thanks. I got my 6500 at the end of October. It's not hooked up yet. It's got an August 2022 date label on the side. So, does that mean it has the screw? I guess I can verify it by checking continuity between ground and output neutral while it's off, which should be open N to G? Actually that would verify nothing. Guess I'll need to open it up.BTW: The thread where this was discussed is:
Newer models of EG4 6500ex are built without the bonding screw
Hey all, I recently got my two 6500ex's from signature solar, the build date on them is 10/2022. I assumed the bonding screws were in place from reading this forum and contacted signature solar for permission to remove them, they gave me permission, and I went ahead and opened them up, and the...diysolarforum.com
That is hard to say. We know the 7/22 units had the screw, and the 10/22 did not. 8/22 places it in the unknown zone.I got my 6500 at the end of October. It's not hooked up yet. It's got an August 2022 date label on the side. So, does that mean it has the screw?
Actually, with the unit off and everything un-plugged, if there is continuity between neutral and ground, the screw is almost certainly there. If there is no continuity, the screw is almost certainly not there.I guess I can verify it by checking continuity between ground and output neutral while it's off, which should be open N to G? Actually that would verify nothing. Guess I'll need to open it up.
It is bad enough not to document how the product works..... but to change something as fundamental as this and not broadly notify people is just criminal.Wow, this is so confusing and maddening that it's not clearly laid out in documentation.
I have very high hopes it will clarify things, but very low expectations that it will clarify things.Hopefully the upcoming video will clarify things.
Okay I'll check it out when I get a chance. Do you or anyone have a pic of where it is?@Subdood If you figure out whether the 8/22 units have the screws, please let us know. It will help us narrow down what manufacturing dates have or don't have the screws.
Sig Solar just let us know that the screws were removed from the 6500s with manufacture dates of 10/22 and beyond.Okay I'll check it out when I get a chance. Do you or anyone have a pic of where it is?
Also, if the screw is there, do I still need to switch my neutrals along with the hots when I transfer my critical loads to a separate panel? You had recommended that in a post earlier this year in the long 6500 thread. Just want to verify. Thanks.
I bought mine 11/10/22 so I guess its bonded. My main panel has no continuity between neutral and ground unless the inverter output is connected so that seems to be proof. I am experiencing extreme weirdness when connecting a generator though and I believe it has something to do with the way the EG4 6500 deals with the bonding when connected to AC. I have no proof yet. I called SS to try to learn how this works in different modes but all I got was a request for a 100 photos.
When on the generator, measure the output between Neutral and ground. You will almost certainly find it is somewhat high.Its connected direct with a 30a breaker in-between.
Well, screw it I'm getting a couple of those I guess. Hope their "software fix" is above board and safe for the hardware.Here is a New video in reference to NGB.