Does this help with understanding how to install feeders?680.25 Feeders.
(A) Wiring Methods. Feeders shall be installed in rigid metal conduit, intermediate metal conduit, liquidtight, flexible nonmetallic conduit, or rigid nonmetallic conduit. Electrical metallic tubing shall be permitted where installed on or within a building, and electrical nonmetallic tubing shall be permitted where installed within a building.
(B) Grounding. An equipment grounding conductor shall be installed with the feeder conductors between the grounding terminal of the pool equipment panelboard and the grounding terminal of the????.. this equipment grounding conductor shall be insulated.
(1) Size. This conductor shall be sized in accordance with 250.122 but not smaller than 12 AWG.