I am installing a NDS 1500Wi Inverter, and want to take advantage of the automatic switching between the battery and 230v supply (mains hook-up). I am connecting it to the existing sockets through a 10A RCBO. I am planning to take the feed directly from the electric hook-up connection, and bypassing the existing consumer unit. Given the fact that the M/H is not in direct contact with the ground, but insulated by the tyres, do I need to connect the neutral and earth leads together as shown in the diagram? Here is the manuals for the inverter: www.roadpro.co.uk/userfiles/PDFs/product%20information/NDS/Smart-In%20Inverter%20Manual.pdf also: www.roadpro.co.uk/userfiles/PDFs/product%20information/NDS/Inverter%20with%20earth-neutral%20bonding%20leaflet%20-%20for%20web.pdf