Solar PV install in Derby. 12 Solar Panels with Battery Storage and Off Grid set-up

12x Solar Panel Solar PV system that we installed at a property in Mickelover, Derby.

This system used 12x JA Solar 395w Panels. All Black, Half Cell PERC Panels.

The inverter is a 3.68kw Solis RHI Hybrid.

This can control the energy coming from the panels and divert it between battery storage and house usage.

This system included 15 kWh of battery storage

[danohagan]

What sort of RCD should be on the system?one has a 20A type AC which trips once a week