Sure, military installation, contractor hired to "Replace" transfer switch, transfer switch was not replaced, new or reconditioned switch was used for parts. parts included circuit board and ribbon cable. It seems to me that the AHJ would be the deciding factor. According to 700.5(C) "shall not be permitted to be reconditioned". Now the contractor was hired to replace not repair, if they bought a new transfer it had a warranty but by pulling parts from a new transfer switch to put in an existing installed switch there is no warranty. If they bought a "reconditioned" transfer switch and pulled parts then we have transfer switch that was reconditioned with a transfer switch that was reconditioned. "The authority having jurisdiction for enforcement of the code has the responsibility for making interpretations of the rules, for deciding on the approval of equipment and materials, and for granting the special permission contemplated in a number of the rules."