Sizing Medium Voltage Cables

[NEC User]

Per NEC 2014, I am to use Table 310.15(B)(16) for ampacity of insulated conductors rated up to and including 2000 volts.

For example, a #8 cable is rated for 65 amps for insulation type RHW.

What chart should I use to size cables at 5,000 volts?
Is a #8 cable rated for 5,000 volts still rated for 65 amps?

 

[charlie b]

Depends on the project conditions. Start at table 310.60(C)(67), and flip pages until you find a table that describes your installation.