1) I need some guides to help me sizing the MV cables for a 300A, 4.16KV copper feeder, underground, 3 wires + ground, there are too many 310.60 series tables,
I am not sure which one to use.
2) I assume the ground wire is still sized per NEC 250.122 table?
3) For conduit size, if using RMC conduit, the selection is similar as what we typically sized with 600V or less conductors (i.e. Table C.9)?
Will the MV cable have larger area than 600V or less conductor?
4) What is the right application for MV-90 and MV-105 cables?
Thank you.
I am not sure which one to use.
2) I assume the ground wire is still sized per NEC 250.122 table?
3) For conduit size, if using RMC conduit, the selection is similar as what we typically sized with 600V or less conductors (i.e. Table C.9)?
Will the MV cable have larger area than 600V or less conductor?
4) What is the right application for MV-90 and MV-105 cables?
Thank you.