Re: Hot tub
From the handbook
The requirements of 680.44 specify that field-assembled spas and hot tubs with heater loads of 50 amperes or less are to be GFCI protected. Spas and hot tubs utilizing voltages over 250 volts or 3-phase power are not required to have GFCI protection because GFCI devices are not available in all voltage, amperage, and phasing arrangements. Combination spa-pool or hot tub-pool arrangements are not required to have GFCI protection if they share a common bonding grid.
I might be missing it but I don?t see any thing in this section that says if it s hard wire it doesn?t need GFCI ptotection
The only thing I see is listed units, Self contained units that provide integral ground-fault protection need no additional ground fault protection.
Some one stated unless the unit requires ground fault protection it not required. I read this section to say unless the unit listed as not requiring additional GFCI protection then it is required.