Where does the cable exit from under the tub?

The simple way to understand it is this - if you are facing the heater door, the equipment access door is on your left-hand side. The cable is hidden inside and there are two ways to take it out: 

1) through the equipment access door (but it will keep your door open) or 

2) from underneath the hot tub, which most of the clients prefer. 

The cable is 2.5 meters long and if you need more than that, you simply connect the extension. We then advise keeping the plugs under the hot tub (inside the equipment compartment) and extend only the cord itself. It's a safer way because the plugs will be protected from the elements.