Quote:
Originally Posted by thedude123
Ok cool so I can basically just use this exact diagram.
How big of a contactor and ssr would I need for a 15002000 watt element?
Also would I just change the position 7 switch to an on/off switch so I would be able to run the both elements at once?

You can use that exact diagram. But you can't run both elements at once  That would be 7500 watts and pull 32 amps. You only have 30 available.
Volts * Amps = Watts,
So Watts / Volts = Amps
So 1500 / 240 = 6.25 Amps
And 2000 / 240 = 8.4 Amps
You could run a 4500 ish watt element and a 2000 watt element together: 6500 / 240 = 27 Amps
But you'll be running awefully close to the rated limit of your system, and risk popping the breaker.