Originally Posted by Malticulous
Probably an L14-30r
. I'd just go with a 14-50r to a spa panel to have proper breakers for all 240v and 120v circuits (just backfeed the 50A GFI breaker.) The only disadvantage is you will need to run 8 or 6 AWG to the outlet and panel instead of 10. If you don't need 120 use L6-30.
So, if I want my pump switch to be on the controller, I need to run 50A to the outlet? I was planning to have one 5500W element and pump run by a controller fed by a 30A breaker in the main panel through the 50A spa panel.