that use off-site manufactured subassemblies.

Be cautious of third-party sites offering "free downloads" for UL standards. These files are often outdated, incomplete, or may contain security risks. Official versions are typically updated frequently—for instance, the was issued in 2009 with several reaffirmations and revisions, the most recent being in July 2025 . PDF Download UL 183:2020 - NormSplash

La se refiere específicamente a los requisitos para "Bornes de conexión para conductores de cobre" (o "Connectors for Use with Copper Conductors" ). Esta norma establece las pruebas de rigidez dieléctrica, resistencia a la corrosión, capacidades de amperaje y torque para conectores eléctricos.

Especifica el uso de conductores (cobre o aluminio) y requisitos de inflamabilidad para los materiales poliméricos.