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SESK: Stuff Everyone Should Know · sesk.info/elec-grounding-def

In NEC terms, grounding means connecting a system or equipment to what?

Grounding connects to the earth.

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  1. The neutral conductor
  2. The panel's metal enclosure
  3. The earth ✔

Why: Grounding is the connection to the earth through a grounding electrode. Joining metal parts to each other is a different job, called bonding.

Huh, didn't know that: Article 250 sets minimum requirements for a safe installation; it is not a design specification.

The dad joke
Why has no electrician ever gone to the International Space Station? None of the wiring runs to the ground.
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References

Answer: The earth. Grounding is the connection to the earth through a grounding electrode. Joining metal parts to each other is a different job, called bonding.

  1. EC&M: Grounding vs Bonding Part 1 of 12 (Mike Holt) www.ecmweb.com/basics/bonding-grounding/article/20891808/grounding-vs-bonding-part-1-of-12
    Grounded (earthed). Connected to earth.
    Checked 2026-10-10.

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