Never the less something of that loading, in my opinion ought to be wired on it's own Radial circuit, others may Poo Poo my reasoning, I have never had overheated circuits before, using my method, so I stand by that. Again in my opinion joining circuits if that nature with crimps or Wagos, will only compound the problems of overheating, but each has their own opinions and if it works for them then that's their take on the situation. I'll say no more.its all in 1 as we call it the EGG does the heating and air pump the load mentioned is whats in the specs on their web site for this spa