JJM, if a lawyer got you on the stand and asks how you tested the breaker - take the fifth... Testing a breaker in the field like that will cause more damage than good if they have the industry expert from the factory on right after you. Not to mention dangerous. There are places to take breakers for testing, there is one in my area (SF Switchgear - I sell my larger breakers to them... They test and re-sell.), and Randy knows of some in the So. Cal area that are closer to the OP's area that will test in a controled enviornment against UL standard 489. Load banking for thermal, and bolted short for magnetic against the parameters of the breaker with a limited AIC control board. It is not expensive, and if friendly enough, they may not even charge you for a single breaker.
Quite possible these to papers were written by the same person?????
http://www.e-t-a.com/fileadmin/user_upload/USA/PDF-files/White_Papers/wp_standards.pdf http://www.maintenanceresources.com/referencelibrary/ezine/eleccircbreak2.html
