It's a 4-wire 220V input. Line 1, line 2, neutral, and ground.
The Line 1 buss has one leg of the heating element, and that's it.
The Line 2 buss has the other leg of the heater element, and the 110V hot-side wires (pump, vent fan, etc.).
The neutral buss has all the 110V neutrals.
The ground buss has... well... the grounds.
My problem is, my Line 2 buss is full, and I still need one more 110V circuit for the PID. Can I just connect the hot side to the Line 1 buss (and the other side to the neutral)? Or do all the 110V hots need to come from the same line?