My hot tub was wired for a 240V line in the previous owners location. Looking at the wiring diagram, and in the control box itself, I see that it can be fitted with a 120V line instead (provided the 120V line is on it's own circuit).
The manual I have is generic so it doesn't go into how to actually do this wiring. After studying the manual, it seems to be a matter of 1) switching the wiring harness inside the control box from 240V to 120V (little white plugs... just switched them) and 2) wiring up a new GFCI protected 120V (and at least 20A) power source to the bare wires in the control box. I've done the first part, but the wiring has me a bit confused. So, here is my question:
These are 3 leads and a grounding screw in the control box. The leads are White (neutral), Black (L1), Blue (L2). My new power source cable has 3 leads... White (neutral), Black (hot), Green (ground.) I connected the Green to the ground screw in the control box, the White to the White in the control box and the Black to the Black in the control box. I wasn't sure what to do with the Blue (L2) so I capped it off for now.
When I tried powering up this setup, my GFCI breaker switched off. Something isn't right. Can you shed any light on this? Should L2 be used in some other way?
