The Refined Iron is obtained by smelting an Iron Ingot. It can also be obtained by placing an Iron Ore with Coal Dust in a Rotary Macerator, getting Refined Iron Dust (thus skipping the re-smelting process).
Insulated HV Cable Shapeless Recipe
Note that the forcefield EU injector is not used in Tekkit Lite. Instead, the forcefield core may be directly powered.
Iron Dust Shapeless Recipe