DanyR

Hi all. Just want to add a few questions to this. The electrician (10 years ago) ran a conduit inside the house (65ft) from the main breaker box (50amps) And install a disconnect box (outside by the future spa location) at the end. He put 2 black stranded #8 awg and a small ground about #18awg. Now I want to buy a hot tub and thinking about the #8awg is too small. The wire says "colonial TWN or THHN or THWN". 1st. Do I need to change this to a #6AWG? 2ND. Is my ground big enough or it has to be #6AWG? 3rd. I need to add a white neutral. Does it have to be a #6AWG as well? Thank you very much. By the way, if I upgrade to a 6AWG, I want to upgrade the main breaker to 60amps and add a 60 amp GFCI breaker in the diconnect. Does this sound good?