As you all can tell i am a noob at electrical wiring. The hot tub has 4 wires coming in. as i can see it is 2 hots a neutral and a ground. I figured it was 3 phase because that's what my DAD said ( Im only 14). But after looking i believe that it is single phase 240 with 2 hots and 1 ground, the neutral in for any 120 systems in the tub. Please let me know if i am missing something.

THANKS!!