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Grid Tied Inverter Installation.

I have been forced to forgo my international fashion modelling career and judging the Pekinise gate jumping trials in Scunthorpe, to install a grid tied inverter. I suddenly realised that I don't know anything about them beyond the theoretical. Apparently the system is a 5kW one.

 

Private solar panels are to be installed on a barn roof in the open flat countryside. Horses live in the barns/stables. The barns have a sub-main fed from a farm house TT earthed. Two residential caravans are located next to the barns. The barn owners are going to install the solar panels. I am required to just wire up the grid tied inverter.

 

Do I just bung in a B16 into the submain board, and a couple of isolators and hope for the best?

 

Do I need to consider lightning protection, S.P.D.s etc?

 

P.S. We get lots of flying insects in our homes in the sticks. Tip: If  using a hanging sticky flypaper, do not hang it below head height above your desk chair. I should know.

 

Z.

 

 

 

 

 

 

 

  • That depends on the total size of export generation on the phase. In any three-phase system, without triple-n harmonics, the maximum neutral current is the maximum of any of the phase currents.

    In a three-phase installation with export on one phase only, again ignoring the effects of triple-n harmonics, the maximum neutral current is now the maximum of any phase current plus [0.87 times the maximum output of the single-phase generation on another phase].

    So it does depend where in the installation you are looking, and the phase balance at that point …