I have a Solis 5G 3.8K Grid Tied, in the UK, with an AC backup connection, 10KWH of Batteries and 5KW East west facing Solar, all working just fine. The AC backup wasn't wired to anything. As the Inverter, batteries etc are all in the Garage they are literally about 3 feet from our Fridge freezer, which uses about 2.5KWH per day.
The fridge is really the only thing I'm concerned about in the event of a power outage, so wired in a 4 way extension block, to the AC backup, Positive, Neutral and Earth all correctly wired. Adjusted the config on the inverter, then shutdown the house supply and yey the fridge is still working. Sounds good so far, but having seen a post about the correct way to do this, with a separate distribution panel and separate earth, I plugged in a socket tester that tells me the extension block is fine but has no earth. I have unplugged the fridge, moved it back to its original socket and made everything safe.
So the question is does it need an entirely separate earth from the rest of the house ? If so, to improve my knowledge base, why would that be ?
The fridge is really the only thing I'm concerned about in the event of a power outage, so wired in a 4 way extension block, to the AC backup, Positive, Neutral and Earth all correctly wired. Adjusted the config on the inverter, then shutdown the house supply and yey the fridge is still working. Sounds good so far, but having seen a post about the correct way to do this, with a separate distribution panel and separate earth, I plugged in a socket tester that tells me the extension block is fine but has no earth. I have unplugged the fridge, moved it back to its original socket and made everything safe.
So the question is does it need an entirely separate earth from the rest of the house ? If so, to improve my knowledge base, why would that be ?