An ESD (Electrostatic Discharge) grounding wire is a device used to provide a controlled path for static electricity to safely discharge to ground. It is typically a flexible wire that is connected to an ESD grounding point, such as an ESD mat or a ground plug.

ESD grounding wires are commonly used in electronic manufacturing and assembly environments, where workers handle sensitive electronic components that are susceptible to damage from electrostatic discharge. The grounding wire is typically attached to an ESD wrist strap or an ESD foot grounder, providing a low-resistance path for static electricity to discharge safely to ground.

ESD grounding wires are typically made of conductive materials, such as copper or stainless steel, that provide a low resistance path to ground. They are typically coated with an insulating material to prevent accidental contact with live electrical circuits or components.
They should be checked regularly for signs of wear or damage, and should be replaced if they become damaged or lose their conductivity.