All I have is 2002...
680.41 Emergency Switch for Spas and Hot Tubs.
A clearly labeled emergency shutoff or control switch for the purpose of stopping the motor(s) that provide power to the recirculation system and jet system shall be installed at a point readily accessible to the users and not less than 1.5 m (5 ft) away, adjacent to, and within sight of the spa or hot tub. This requirement shall not apply to single-family dwellings.
The part about not being applicable to single family only means it doesn't have to be marked "Emergency Shut-off" As a disconnect of some kind would still be required to be installed for maintenance, accessible and with-in site due to 680.12. And 5'+ away to cover 680.22(C). And if closer, I have had people build a small wall to make it more than 5' away.
"680.22(C).... unless separated from the pool by a solid fence, wall, or other permanent barrier. " That seems to be the only exception to the 5' rule.
