Installing a CT onto a leg of a 3-Phase motor in 480VAC MCC Bucket. The CT is going to connect to PLC AI (analog input) Card.
Going to use #16 AWG STP (shielded twisted pair) from the CT out of the MCC to the PLC.
The 24VDC Analog CT Circuit is Loop-Powered (powered by the PLC's AI Card).
Does the STP Jacket need to be rated for a minimum of 480VAC since it will be very close to the 480VAC conductors inside the MCC ?
I assume 300.3(C)(1) applies to this installation ?
Or are there any exceptions in Article 725 that would allow the STP Jacket to be rated at 300 Volts ?
Going to use #16 AWG STP (shielded twisted pair) from the CT out of the MCC to the PLC.
The 24VDC Analog CT Circuit is Loop-Powered (powered by the PLC's AI Card).
Does the STP Jacket need to be rated for a minimum of 480VAC since it will be very close to the 480VAC conductors inside the MCC ?
I assume 300.3(C)(1) applies to this installation ?
Or are there any exceptions in Article 725 that would allow the STP Jacket to be rated at 300 Volts ?