Thank you!!
As an update:
- I replaced the breaker with a standard non-GFI breaker and all is working fine (the original GFI breaker was for my home brewing setup)
- also, thanks on the info on venting, my wife sincerely appreciates the guides! She had been using the kiln without the benefit of any manuals in the past.
- Fascinating info on firebrick conductivity, @neilestrick
We got things working and did our first firing last night.