How does grounding electrode resistance affect fault currents in a building?

How does grounding electrode resistance affect fault currents in a building?

• A. Lower resistance lowers fault current; higher resistance increases fault current
• B. Lower resistance lowers fault path impedance and increases fault current; high resistance reduces fault current and can affect protection coordination
• C. Grounding electrode resistance has no effect on fault currents
• D. Lower resistance increases fault path impedance and reduces fault current

Answer: (B)