EMC Question of the Week: June 16, 2025

CAT5e Cable with drain wire

Many cables with foil shields have an extra uninsulated wire called a drain wire. The main purpose of the drain wire is to provide   

  1. mechanical strength
  2. a path for low-frequency current
  3. an earth ground connection
  4. a connection to the connector shield

Reveal Question of the Week - Answer 250616