Need Electrical Engineering help on this one, it is out of my expertise as a Telecom Engineer.
We are installing a Candeo AC/DC Rectifier System for a Nortel PBX. The panel power is 215/400 three phase (This is overseas, but we must meet NEC standards as it is considered U.S. soil) One 30 Amp breaker is installed in the panel for each rectifier unit. Six rectifiers will be installed in the Candeo rack which will be operating 24/7. Each rectifier is nominally rated at 14.5 amps @ 208VAC continuous. We are running 6 Phase and 6 Neutral feeds in 1 1/4" liquid tight conduit to the box on top of the Candeo Rack and 1/2" liquid tight with 1 ea phase and neutral from the box to each rectifier terminal. We plan to use THHN #12 AWG wire per the 90degC column on Table 310-16.
Is this acceptable per NEC? If Not, please explain why not, with references.
We are installing a Candeo AC/DC Rectifier System for a Nortel PBX. The panel power is 215/400 three phase (This is overseas, but we must meet NEC standards as it is considered U.S. soil) One 30 Amp breaker is installed in the panel for each rectifier unit. Six rectifiers will be installed in the Candeo rack which will be operating 24/7. Each rectifier is nominally rated at 14.5 amps @ 208VAC continuous. We are running 6 Phase and 6 Neutral feeds in 1 1/4" liquid tight conduit to the box on top of the Candeo Rack and 1/2" liquid tight with 1 ea phase and neutral from the box to each rectifier terminal. We plan to use THHN #12 AWG wire per the 90degC column on Table 310-16.
Is this acceptable per NEC? If Not, please explain why not, with references.