Reference Source

NEMA C37.55

For NEMA C37.55, standard title is Metal-Clad Switchgear Assemblies-Conformance Test Procedures; nrtl is UL; laboratory is UL LLC; status is currently recognized, recorded from its source on 2026-08-10.

Test standard
NEMA C37.55 verified
Standard title
Metal-Clad Switchgear Assemblies-Conformance Test Procedures verified
NRTL
UL verified
Laboratory
UL LLC verified
Status
currently recognized our reading
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA-recognized labs (NRTLs) can certify to a given test standard

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

NEMA C37.55 | Metal-Clad Switchgear Assemblies-Conformance Test Procedures |

osha.gov, retrieved 2026-08-10

Source

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