the plc can raise the water supply rate as the operating temperature of the steam generator stabilizes the target electric power will be determined based on electric supply capability of equipment another adjustment which can be made in light of the plc capability to adjust feedwater electric conductivity is the reduction in steam injection rate if a pressure set point has been established by the oil field operator in other words injection pressure is directly related to injection rate so by reducing injection rate then injection pressure can be stabilized to match a preset upper pressure limit for illustration purposes consider that power is 4160 vac 3 phase and y connected then each of three legs to neutral can be used for resistive heating refer to the attached figures for description of an embodiment of the invention that is suitable for downhole installation consider an outer cylinder or casing 8 with a top closure or flange 6 and bottom closure or flange 1 into the top closure water is delivered to a central port not shown in illustration and externally surrounding this port are three hot posts which deliver electric power into the generator through high pressure bulkhead connectors 7 located at about 120 degrees apart a smaller diameter outlet pipe 2.