George, I'm sure you meant to include 'conductors' in your reply regarding the 125% for continuous loads, right? (210-19 '02 ed.)

I'm curious as to the specifics of the installation(s). Does it fall under Art 411 operating under 30 volts? What are the instructions provided with the system? Are the transformers part of the listed system? Certainly if it does the mfg can clear up the issue based on the listing.