i actually witnessed my element dry fire. I was running in autobrew from the BrewTroller and the sparge water was already at temp and I thought it was just setting idle, well the sparge water drained below my temp sensor and element and the BT fired up thinking the water got cooler. I heard sizzling and before I could hit the kill switch the GFCI tripped. The element have drooped, melted and popped open like a firecracker. My point is that in my experience if it dry fires it will fail completely. Mine hadn't been dry for no more than 30 seconds.
It's going very well so far. Wait until you build your panel and start using your planned setup. With that, the heating element issue goes away as well.
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