Electrician Job - Ceres, WC, 6835

We busy setting up a camp 5km from the kappa powerstation on Sadawo game reserve.We have brought containers in and have set them up.The containers is already cabled to the lights and plug sockets with a DB on every container.There is total 6 no containers.There is also 2no 150lt geysers installed and wired to the Db's.We need the wires to be connected to the 6no db's and then brought to a central point where we will then be supplying a Diesel Generator to take care of the Electrical.I also need to hear from the electrician what size the Generator must be to supply the various DB's power without any distuptions.We will also have a preasure pump that needs power.