Electrical grounding symbol

electrical grounding earthing safety electricity protection surge prevention lightning protection electrical system conductor neutral wire electrical installation voltage control current flow circuit protection residential grounding industrial grounding grounding rod grounding wire electrical safety fault current protection grounding system earthing system electrical maintenance surge protector power system equipment protection safety compliance electrical wiring lightning rod safety measure electrical code grounding electrode fault protection electrical installation safety building wiring grounding conductor power distribution safety precaution electrical fault control electrical circuit protection earth connection electrical shock prevention safety grounding system residential electrical safety industrial electrical safety equipment protection electrical wiring safety voltage regulation surge protection system