Q: What is the best way to wire the R-3F2?

A: To wire an R-3F2, use the Delta configuration for power. Connect the black wires (1 bar, 2 bar, 3 bar) to L1, L2, and L3 respectively on the disconnect side of the 3-Phase line voltage. The Green/Yellow stripe (Grn/Yel) wire must be connected to Earth Ground. Refer to page 6, step 4 of the install instructions for more details. We recommend using the Disconnect side instead of the fused side to avoid additional points of failure. Please refer to the install guide for more information here.