Sunsynk no earth, no dedicated neutral bar

[Thys LOW Elektries]

Good day
Just been at a client with a new SunSynk install with a coc for the installation.
I had to move a plug from the essentials db to the non-essentials db
First thing I noticed is that the neutral bar is not splitted. The essential and non-essential circuits share a neutral.
Secondly when switching off the main input the plugs don't have an earth. So I assume there is no neutral earth bridge.
The best part is that the client say he has a coc, everything works and that everything I say is wrong!

So I guess it will be a while before I work at his place again.

Greetings

[Isetech]

A permanent bond pretty much does the same thing, if you create a second neutral/earth bond (permanent bond as its referred to by some people) you doing pretty much the same thing ?

The earth is common while in grid mode and the TN-S system for example has a bond at the star point of the transformer, so the grid neutral and earth is the same and so is the ups neutral and earth ?

Its only when it goes into islanding mode that the relay will open which will open the neutral earth bond on the grid?

[Thys LOW Elektries]

If you switch the main breaker off the neutral on the inverter can't "see" the transformer. Is it not better then to separate the neutrals and give the second neutral a permanent earth so that you don't have a floating neutral when in islanding mode?

[Justloadit]

If you switch the main breaker off the neutral on the inverter can't "see" the transformer. Is it not better then to separate the neutrals and give the second neutral a permanent earth so that you don't have a floating neutral when in islanding mode?

Only if it is controlled by the inverter when in 'Islanding' mode via a relay/contactor.
Do a search on the forum, with respect to Neutral/Earth bonding, there is a ton of invaluable information in the threads.