I guess a more specific question would be do I need an insulated equipment from the service to the pool panel in a single famly dwelling ? Thanks!!
Dennis already told you where to look.
680.25(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 applicable service equipment or source of a
separately derived system. For other than (1) existing feeders
covered in 680.25(A), exception, or (2) feeders to separate
buildings that do not utilize an insulated equipment grounding
conductor in accordance with 680.25(B)(2), this equipment
grounding conductor shall be insulated.