SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/elec-ws-headroom

The working space in front of a panelboard must be clear to a height of at least what?

6 1/2 feet or the equipment height if greater.

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  1. 5 feet
  2. 6 1/2 feet ✔
  3. 8 feet

Why: The 110.26 working space runs from the floor up to 6 1/2 feet or the height of the equipment, whichever is greater. Nothing like a ceiling duct should drop into it.

Huh, didn't know that: Indoors, the space above a panel up to 6 feet higher must stay free of pipes and ducts.

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I asked an electrician to fix an electrical issue at my house. He refused.
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References

Answer: 6 1/2 feet. The 110.26 working space runs from the floor up to 6 1/2 feet or the height of the equipment, whichever is greater. Nothing like a ceiling duct should drop into it.

  1. EC&M: NEC Requirements for Working Clearances www.ecmweb.com/national-electrical-code/code-basics/article/21259374/nec-requirements-for-working-clearances
    to a height of 6½ ft
    Checked 2026-10-10.

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