It is in an industrial facility, but it is type TC cable. I took the reference to type TC-ER as a specific instance of when the cable left the tray and was unsupported for 6 feet to utilization equipment; then you must use type TC-ER.
It is my contention, with an inspector, that running Tray Cable under a raised Computer Floor, supported by uni-strut, is permitted by the NEC under 336.10 (7). Do you agree?
