Harold:
Based on a 1/2 HP and larger, 120 volt, filter pump, a dedicated circuit IS mandatory, with either a GFI CB, or a 20 amp faceless GFI device mounted remote from the pool.
A 1/3 HP motor (7.2 amps) will work on a circuit 'shared' with another device(s); but, I can't remember seeing a 1/3HP filter.
As to the 'landscape lighting' that's a nightmare itself with a HO permit. Had one with 120 volt 'rope' lights installed around a IG pool; spliced and taped (red tape), on 2 extension cords, cause the "GF" outlet "kept shutting off" when I plugged the lights in.
John
