Re: 12v landscape lighting within 5' of a pools edge
But Art 411 covers lighting operating at less than 30 volts and it has the following:
411.4 Locations Not Permitted.
Lighting systems operating at 30 volts or less shall not be installed (1) where concealed or extended through a building wall, unless using a wiring method specified in Chapter 3, or (2) within 3.0 m (10 ft) of pools, spas, fountains, or similar locations, except as permitted by Article 680.
And these systems have to be listed.
Ten feet is the minimum distance.