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This is an old thread, im shocked to see a Mecer ups integrated into a DB. i see no earth spike wiring, i could just assume that neutrals in this install are common across the utility and inverter.
an earth neutral bond is essential for circuits connected to the inverter in conjunction with a RCD on the inverter output after the bond.
the changeover switch effectively disconnects the earth bond on the utility side, hence a separate bond is not only allowed but a requirement to be compliant with SANS10142
i hope this has been corrected since this photo was posted as you have effectively removed the protective shell around everything connected to the inverter
I am shocked to see 99 percent of pictures being posted on social media.
Please attach the code or which SANS and the page.
Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.
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