TTBy Tonetron Engineering Team · Dongguan Taitron Electronic Limited
What does a VW-1 flame rating mean?
A vertical flame test on the wire — it describes burning behaviour, not electrical performance.
Answer: VW-1 is a vertical flame test rating — it describes how the insulation behaves when exposed to a flame, and says nothing about bandwidth or current.
It is a safety/materials property, relevant to installation codes and to some buyers' requirements.
It is not a substitute for product certification.
Ask for the test report per construction — compound and wall thickness both change the result.