Installation of Anti-Static Flooring Grounding

The installation of the grounding system (i.e., the earth wire) for anti-static flooring is a critical step in ensuring its performance. Installation methods generally fall into two categories: raised flooring and direct-lay flooring. Raised Anti-Static Flooring (Commonly Used in Equipment Rooms)
This type of flooring is elevated using adjustable pedestals; the space beneath the floor is utilized for cable routing, and the grounding system requires the construction of a three-dimensional network.

Laying the Copper Foil Ground Grid: Before installing the floor pedestals, copper foil must first be laid out on the subfloor and connected to form a grid pattern. According to national standards, the grid mesh size should ideally be 6m × 6m. For smaller rooms, the copper foil may be laid out in a cross shape, with the intersection point positioned at the center of the room. The intersections of the copper foil strips must be securely bonded—either via tin soldering or conductive adhesive—to ensure stable conductivity.

Connecting Pedestals to the Ground Grid: Once the pedestals are installed, a flexible, multi-strand copper wire (with a cross-sectional area of ​​no less than 2.5 mm²) must be used to connect each pedestal—or every other pedestal (at 2-meter intervals)—to the copper foil ground grid beneath.

Connecting Stringers to the Flooring: Conductive adhesive strips are applied to the stringers (crossbeams) to ensure that, once the floor panels are placed in position, they establish electrical continuity with the grounding system via the pedestals.

Routing the Main Grounding Trunk: The ground grid must be consolidated and connected to a main grounding trunk. According to regulations, a dedicated main grounding trunk should be established for approximately every 70–80 square meters of equipment room floor area; these trunks ultimately converge and connect to the floor's central static grounding terminal box. The main trunk typically consists of a copper wire with a cross-sectional area of ​​no less than 6 mm², or a copper busbar measuring 30 mm × 3 mm.

Simplified Steps: Subfloor Preparation → Laying the Copper Foil Ground Grid → Installing and Leveling Pedestals → Connecting Pedestals to the Ground Grid → Installing Stringers (Applying Conductive Strips) → Laying Floor Panels → Comprehensive Grounding Verification.

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