FAQ: Does it do any good to have ESD chairs if the floor is not ESD?

A chain is only as good as its weakest link. In an electrical chain, a weak link creates a breach in conductivity. A loose or disconnected wire is the simplest example: If a wire is loose or a cord is unplugged, the electrical current cannot reach its intended target.

With static control, the idea is to discharge the built-up (static) charge to ground. Static cannot discharge through plastic or other insulative materials. An electrical charge can flow only between conductive objects. A person can wear a heel and/or wrist strap and sit on an ESD chair; if the floor cannot discharge static generated by friction—walking on the floor, moving in the chair—the charge cannot flow to ground. It has no way to get there.

Think of the human body as an isolated conductive object (AKA a capacitor) capable of storing static electricity. When the static-charged person approaches and sits in the conductive chair, the static charge on his or her body immediately flows to the chair—until, that is, both the body and the chair share the same charge. We call this sharing potential.

Photo of a laboratory with ESD flooring with some ESD chairs under the tables.
Bolt ESD chairs at Belkin, consumer electronics, Los Angeles, CA

ESD Floors Ground Static Charges

If the chair were on an ESD floor, static charges would flow from the chair, through the flooring material, to ground – the floor would also protect against static when people walked in the space.

Illustration demonstrating how ESD flooring is grounded. Conductive elements in ESD flooring transport static charges from people or objects on the floor to the conductive ground plane (conductive adhesive or underlayment); charges then flow across the conductive ground plane to copper strips at the periphery of the room, connected to some form of earth ground.
ESD floors ground static charges on people as they walk, and also ground chairs, carts, and other objects on the floor.
Illustration demonstrating how ESD flooring is grounded. Conductive elements in ESD flooring transport static charges from people or objects on the floor to the conductive ground plane (conductive adhesive or underlayment); charges then flow across the conductive ground plane to copper strips at the periphery of the room, connected to some form of earth ground.
ESD floors ground static charges on people as they walk, and also ground chairs, carts, and other objects on the floor.

On a non-conductive floor, both chair and person are isolated from ground. With no conductive path through the floor, charges remain in place. If the person or chair makes contact with electronic equipment, both will discharge to the equipment simultaneously.

Without a conductive floor, a conductive (or ESD) chair is nothing more than another charged body looking for a place to discharge. Kind of like an accident waiting to happen.

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Background graphic is a still from the StaticWorx GroundSafe ESD Flooring – Your Trusted Partner explainer animation. In the foreground at the bottom are two boxes. The top is a bright blue with the StaticWorx logo and "GroundSafe ESD Flooring" underneath in white. The second is a dark blue-gray and includes the text in white: “GroundWorx ESD Flooring – Your Trusted Partner”
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StaticWorx high-performance static-control floors protect electronic components, explosives, and high-speed computers from damage caused by static electricity. ESD flooring is part of a system. Choices should always be based on objective, researched evidence. When you partner with us, we look at all possible items that may need to integrate with the floor, and, focusing on your goals and objectives, help you find the right floor for your application.