Implemented comprehensive surge protection system for residential property. Installed Square D HEPD80 whole-house surge protective device at service entrance. Connected to main panel via 50A double-pole breaker. Ensured proper grounding with #6 AWG copper wire to ground rod. Voltage protection rating: 600V L-N, 700V L-G. Maximum surge current capacity: 80kA per phase. Incorporated cascaded protection with point-of-use SPDs for sensitive electronics. Verified correct operation using surge generator. System now provides three-stage protection: primary, secondary, and point-of-use, safeguarding against both external and internal surges.