Compliance evidence pack (unofficial)

Synthesized answer (unofficial)

UFC 3-550-01 was cancelled effective 1 September 2016 [UFC 3-550-01].

Change 3, dated 01 November 2019, documents this cancellation [UFC 3-550-01]. The document provided design guidance for exterior electrical power distribution systems, including requirements for conduit installation, grounding and bonding, and ductbank transitions [UFC 3-550-01].

However, UFC 3-550-01 remains referenced in current Air Force criteria for exterior power distribution design. Other UFCs such as UFC 3-501-01, UFC 3-520-01, UFC 3-530-01, and UFC 3-560-01 address related electrical system requirements [AFSOCI 32-1084 para 7.4.37; UFC 3-130-04]. Grounding and bonding systems must meet NFPA 70 (60 Hz) or BS 7671 (50 Hz) standards in conjunction with UFC 3-550-01 requirements [UFS 1-201-02].

For current design requirements, consult the superseding documents and applicable electrical codes referenced in active Air Force criteria.

Unofficial — answered from indexed publication text, which may be incomplete or out of date. Your MAJCOM/unit supplement may be stricter. Verify the official PDF before acting or writing a finding.

Controlling Air Force guidance (quoted)

AFSOCI 32-1084 para 7.4.37 (effective/current as of 2023-02-21)

tant drains. Applicable criteria include UFC 3-401-01 for mechanical & UFC 3-410-01 for HVAC. Electrical Industrial equipment typically requires 240- and 480-volt, three-phase electrical current. Use commercial grade convenience receptacles and special power outlets. Consult X-ray and other NDI equipment specifications for their specific power requirements. Applicable criteria include UFC 3-501-01 for general electrical requirements, UFC 3-520-01 for interior electrical systems requirements, UFC 3-530-01 for interior and exterior lighting and controls requirements, UFC 3-550-01 for exterior power distribution systems requirements, UFC 3-560-01 for electrical safety and electrical O&M requirements, UFC 3-580-01 for building telecommunications requirements, and UFC 4-021-01 for mass notifica

Official source: https://static.e-publishing.af.mil/production/1/afsoc/publication/afsoci32-1084/afsoci32-1084.pdf

Supplement deltas

No supplement passage retrieved — check the supplement chain on the pub page before citing.

Federal / DoD standards implemented (quoted)

No federal/DoD passage retrieved.

NFPA standards (cited by reference — copyrighted, not quoted)

• NFPA 780 Installation of Lightning Protection Systems — cited by AFSOCI 32-1084 (sections 8.1.1, 8) — official free-access viewer: https://link.nfpa.org/free-access/publications/780/latest
• NFPA 33 — cited by AFSOCI 32-1084 — official free-access viewer: https://link.nfpa.org/free-access/publications/33/latest