dual both active grid / off grid solar

Previously posted " On grid /Off grid Domestic kitchen Choice of grid or solar at point of use 

Thus  kitchen is equipped with both grid and completely independent solar ( inverter ) sockets 

Eg Plug your washing machine to grid or solar  user choice as opportune. Both are live.together 

See attached schematic 

The issue is earthing : Care so that  earth potential to casing of one appliance plugged to grid is not different to another appliance plugged to off grid supply Easily within reach in a domestic kitchen

Previously advised the earth arrangement as in diagram ( earth rod  linked to my incoming grid earth MET ) would suffice Arrangement is similar to UPS systems 

So advised tp contact a locally qualified electrician  with UPS experience to get final approval / sign off 

I cant find one ?? Can anyone put me in touch with such a person locally ?  Or is there a directory ?  I am in south london close to Morden Northern Line tube

 PDF

ciao Ms O 

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