My kilns have recently stopped firing and it need new elements. I have to buy elements for specific voltage/phase combination. I didn't install the kilns - it was done by my studio mate before they left - so I am trying to sort it out. They are hard-wired into a breaker box, each of which has 3 breakers ganged up. The panel has other circuits on it that are standard outlets, so I am trying to establish if the kilns are 208 single phase, 208 three phase, or 240? I am ruling out 240 because of the fact that there are three breakers -- it seems more likely that it is 208 3 phase. Any thoughts?
To complicate matters, one kiln has '208 single phase' written on it and the other has '240 single phase' written on it. However, these kilns can be rewired and I don't know their provenance, so I don't trust the labels (thanks old studio mate for not writing the wiring down!). I will also contact the manufacturer but that could take weeks.
The kilns are Skutt km1227 and km10247.
This is in a shared studio that was historically a commercial space.
Here's the panel -- it looks like it says 3 phase, 4 wire, 120V - so that makes me think it is 208V 3PH?
Sadly I am at home now an don't have a picture of the breakers, themselves. That would have been a good idea.
The wiring is thick black shielded cable, one cable for each kiln.
Thanks for any insight.