Electrical Questions? Ask an Electrician Online.
Welcome. My name is ***** ***** would be glad to assist.
It sounds like your Spa is a 120/240 unit and requires the 2 hots, a neutral and a ground.
Can you get and post a picture of the wiring area and post here?
The paper clip symbol on the tool bar allows to upload pictures directly here from your PC.
We can then review and advise what is needed.
Let me know and we can continue,