: Provide a systematic procedure for designing a grounding grid that keeps voltage gradients within safe limits.
: Defines safety limits for "Step Voltage" (between a person's feet) and "Touch Voltage" (between a person's hand and feet) to prevent cardiac fibrillation. ieee standard 80-2013 pdf
The standard updated the decrement factor ($D_f$) calculations. This factor accounts for the asymmetry of the fault current wave (the DC offset). The 2013 revision provided more detailed methods for calculating the RMS magnitude of the fault current, ensuring the grid is sized for the worst-case thermal scenario. : Provide a systematic procedure for designing a
