
These specifications were created with certain assumptions about the house and the proposed solar energy system. They are designed for builders constructing single family homes with. . The builder should install a 1” metal conduit from the designated inverter location to the main service panel where the system is intended to. . EPA has developed the following RERH specification as an educational resource for interested builders. EPA does not conduct third-party. . Builders should use EPA’s online RERH SSAT to demonstrate that each proposed system site location meets a minimum solar resource potential. EPA has developed an online site assessment tool, which assists builders in.