Electricians - need help with hot tub wiring

I’ve done electrical. I have plenty of room in my pony panel. Inside the run will be about 25 feet. Then outside it’ll be 15 to the disconnect box.

60A calls for at least 5AWG wire. Conduit must be >= 1.25 inch for 4x conductors that size.
ETA should be 1.5” for 4x 4awg in pvc.

You can just run you some 6/3 SER through your attic down the wall and out of the house and mount you a junction box close to where you’re going to power up the hot tub and go from there

Thhn yes. 6awg ok. My bad. I’m 15 Busch lights deep and looked at the 40c table.
Still need 1.25 pvc though.
ETA I could pretend I was right with 5awg and voltage drop yada yada, but 6awg is the right answer.

If your like me, a visual helps……
LINK
Hope this helps

Question. Do I need 6 g ground or 8 or 10 is sufficient. It says that 4 wires will fit in 3/4 conduit. Why do I need 1.25. Will smaller cause more heat?

quote:

---

6/3 is a four wire. It has a black, red,white and a ground. You are thinking of 6/2

---

There is 6/3 w/GND which has 4 wires and 6/3 which has 3 wires.

Been 4 years since I got out of the design world but this is how it was labeled.

My point is for OP to not assume it has a ground.

Good choice

What is easier to pull NMB or putting conduit and thhn? My basement is finishing, and it's gonna be a pain in the arse pulling schedule 40 conduit.

Could I do this?

60 amp at house breaker.
4 awg NMB until I hit the exterior wall.
Junction box and change over to 4 wire 6 THHN.
Exit junction box in conduit (this will be a 15 foot straight run to disconnect box).


Is that easier/better/worse?