SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/elec-service-six-disc

A service can have up to how many service disconnects?

Up to six service disconnects.

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  1. Two
  2. Six ✔
  3. Twelve

Why: A service normally has one disconnect, but 230.71(B) allows up to six, for example separate panelboards each with its own service disconnect. They must be grouped and marked.

Huh, didn't know that: Fire pump and emergency system disconnects must be kept remote from the normal service disconnects.

The dad joke
Why does a service get up to six disconnects? It likes to keep its options open.
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References

Answer: Six. A service normally has one disconnect, but 230.71(B) allows up to six, for example separate panelboards each with its own service disconnect. They must be grouped and marked.

  1. EC&M: NEC Requirements for Services Part 2 www.ecmweb.com/national-electrical-code/code-basics/article/55021883/nec-requirements-for-services-part-2
    Each service can have up to six service disconnects
    Checked 2026-10-10.

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