Summary[]
A LV-Transformer is used for creating Low Voltage Solar Array arrays and engine generators (LV). They receive MV and convert it down to LV, from its one output face.
They are created by crafting:
W ICC W
C C C
W ICC W
Where W=Wooden Planks, ICC=Insulated Copper Cable and C=Copper
It is used in crafting a Low Voltage Solar Array, where one puts 8 solar panels in a crafting table surrounding an LV-Transformer.