Protection against electric shock to off grid enclosure

[tomwaits]

Hi, New to site so forgive any clumsiness. I have a problem and I wonder if anyone can help. Basically I am bringing in AC Voltage from a wind turbine into a steel container. The container houses the inverter, batteries and a 230v AC Installation - lights and sockets as well as an external supply to the end user.
My querey is how do I afford safety against electric shock to persons within the container, (container is 6m x 4m x2.5m. This is totally off grid.
Do I tie down neutral and introduce RCD protection. If so what if the inverter desides to switch poles. Do I just put on MCB Units and ignore any earthing to the steel container.And what about the 48v battery system. Any ideas

 

[Sintra]

Install an earth electrode and connect to frame of enclosure.

 

[tomwaits]

Is the earth spike to dissapate stray current/voltage. This is being placed on a mountain top and is completly unconnected to any grid system