NEC - Cable Size Under Ground Fault Condition

This describes how the core size is calculated when ground fault condition occurs.

It is assumed earth conductor is part of the same cable for this release.

For NEC, the ground fault calculation is based on NEC Table 250-122.

This table gives ground core size and Maximum Over current Device Rating

The Ground Conductor Size and Maximum Over current Device Rating are displayed on the Earth Current tab:

The ground fault calculation result is displayed on the Sizing Result tab:

Note:
If ground conductor selection is set to "Yes" then only ground fault calculation will be calculated.