680.22 (A) (3) "Dwelling unit(s). Where a permanently installed pool is installed at a dwelling unit(s), no fewer than one 125 volt 15 or 20 ampere receptacle on a general purpose branch circuit shall be located not less than 3.0m (10ft) from, and not more than 6.0 m (20ft) from, the inside wall of the pool."
I would say a circuit for the pool motor is not a general purpose branch circuit, thus the convienience receptacle can not be fed from that circuit.
