Trying to bypass buying a 240V GFCI due to $$$$ and I finally figured it out.
And I'm standing in Home Depot in the electrical isle I figured it out.
I take my current 30 Amp 240 V outlet for my Air Compressor
Make a J-Box with my extra 115V 20A GFCI outlet from my kitchen and a short jumper to plug into the 240V outlet. Then make an extension cord for my boil kettle so I can plug in my 4500W 240V Heating element to the GFCI outlet.
This should then allow me to run my 240V heating element without buying an expensive spa panel.
No more propane!
It's brilliant. Thought I would share my electrical epiphany.
Going home to test my set up now! Will report how great it works later tonight!!