been asked to wire a mobile bar. 16 amp commando plug supply onto a small board with rcd30ma. Wire all lights and a few sockets in braided flex. Equipotential bonding on structure. That's about it I think. Who is responsible for the earthing when it's connected to the supply or generator . E.g. Earth rods if required. I will test it connected to a reliable source with a good ze and then issue cert from there . Fill me in if I'm missing something please