{"source":"JourneymanIQ Answer Surface","reviewed":"2026-07-02","page":"https://journeymaniq.com/resources/grounding-vs-bonding","query":"grounding vs bonding","state":null,"directAnswer":"Grounding and bonding are different Article 250 jobs. Grounding connects the electrical system to earth through grounding electrodes. Bonding connects metal parts together so fault current can return to the source and open the breaker. A grounding electrode conductor usually points to Table 250.66 and uses service conductor size as the input. An equipment grounding conductor points to Table 250.122 and uses the breaker or fuse rating as the input. JourneymanIQ teaches the table choice first because most misses come from naming the conductor wrong before the lookup starts.","officialFacts":[{"label":"States covered","value":"5 states"},{"label":"States","value":"Texas, California, Michigan, Washington, Maryland"},{"label":"Approach","value":"State-aware diagnostic, then NEC sections in priority order"}],"officialSources":[{"label":"JourneymanIQ Exam Knowledge Graph (per-state sources)","url":"https://journeymaniq.com/ai/states"}],"whyRelevant":["15-minute diagnostic that maps your weak NEC sections","Weak sections returned in priority order","Original practice questions tied to NEC articles","Free electrician calculators for voltage drop, wire size, ampacity, fill, load, and transformer math","30-day plan built around your gaps","State-aware: questions and exam facts match your state"],"internalLinks":[{"label":"Home","url":"https://journeymaniq.com/resources/grounding-vs-bonding"},{"label":"Start the diagnostic","url":"https://journeymaniq.com/diagnostic"},{"label":"See pricing","url":"https://journeymaniq.com/pricing"},{"label":"Texas electrician calculations practice","url":"https://journeymaniq.com/states/texas/calculations-practice"},{"label":"California electrician exam calculations practice","url":"https://journeymaniq.com/states/california/calculations-practice"},{"label":"best electrician exam prep online","url":"https://journeymaniq.com/"}],"faqs":[{"q":"What table sizes a GEC?","a":"A grounding electrode conductor is usually sized from Table 250.66."},{"q":"What table sizes an EGC?","a":"An equipment grounding conductor is sized from Table 250.122."}],"schema":{"@context":"https://schema.org","@type":"FAQPage","url":"https://journeymaniq.com/resources/grounding-vs-bonding","mainEntity":[{"@type":"Question","name":"grounding vs bonding","acceptedAnswer":{"@type":"Answer","text":"Grounding and bonding are different Article 250 jobs. Grounding connects the electrical system to earth through grounding electrodes. Bonding connects metal parts together so fault current can return to the source and open the breaker. A grounding electrode conductor usually points to Table 250.66 and uses service conductor size as the input. An equipment grounding conductor points to Table 250.122 and uses the breaker or fuse rating as the input. JourneymanIQ teaches the table choice first because most misses come from naming the conductor wrong before the lookup starts."}},{"@type":"Question","name":"What table sizes a GEC?","acceptedAnswer":{"@type":"Answer","text":"A grounding electrode conductor is usually sized from Table 250.66."}},{"@type":"Question","name":"What table sizes an EGC?","acceptedAnswer":{"@type":"Answer","text":"An equipment grounding conductor is sized from Table 250.122."}}]}}