according to 680-40 for outdoor spas it sends you to 680 parts A and B. 680-12 states that a disconnecting means shall be provided and accessible within sight of all pools, spas, and hot tubs and shall be at least 5 feet from the wall. As for the gfi requirement, in my area a gfci breaker is required but I cant find the article. I dont know if this is a local thing or in the nec. hope this helps.
Re: SPA / GFI#86936 12/24/0311:56 AM12/24/0311:56 AM
the disco is something that needs to be within sight of the motor, as some tub motors are not intergral to the tub ( as in commercial settings) an E-stop for the serving motor is to be placed within sight of the tub. (from the hip, this might be 680.41)
isn't it interesting that , a permanent hardwired pool should not require a GFI , where most hot tubs & spas are listed for them?