solar p.v containment earthing

[Phantasmagoric]

can anyone confirm does the containment on the d/c side of the p.v installation need earthing as per norm.reason im asking is someone at work mentioned it should be left not earthed which i find a little hard to believe.

 

[Ramjam]

Transformered inverters are class 2 devices so the DC side is galvanically isolated from the AC no need for earth. If you use a transfomerless inverter (more efficient) then you need to earth the frame and thats easy for TNS but any PEN system requires a separate earth spike. Avoid TL inverters I say and don't earth.

 

[Phantasmagoric]

cheers mate thats more understandable