Installation of Equipotential Distribution Boxes in Taiwan

Equipotential distribution boxes in Taiwan are installed to connect all exposed conductive parts and metal pipelines to a common grounding system, reducing potential differences and preventing electric shock.

Purpose and Function

Equipotential distribution boxes, also known as equipotential bonding or terminal boxes, are designed to connect electrical devices, metal pipelines, heating/cooling systems, and building structural metals to a common grounding point. This reduces the potential difference between conductive parts, minimizing the risk of indirect electric shock and ensuring compliance with safety standards. They are particularly important in high-rise buildings, humid environments, and areas with multiple metal installations.

Types and FeaturesWall-Mounted Boxes: Many boxes, such as the CDPE30 from Delixi Electric, are made of ST12 cold-rolled steel with electrostatic spraying for corrosion resistance. They include strip holes for flat iron or copper bars and knock-off holes for wiring. Backless Boxes: Some designs allow the ground terminal row to be installed first on the wall, with the box mounted afterward, facilitating installation in tight spaces.

Local Equipotential Boxes: These feature side door grooves and movable doors for easier maintenance without tools, improving long-term accessibility. Plastic Waterproof Enclosures: Manufacturers like E-tan provide IP68-rated plastic enclosures, suitable for humid or marine environments, ensuring protection of internal components.

Installation Guidelines

Positioning: Install boxes where multiple conductive parts converge, such as near water pipes, heating systems, or metal structural elements. Grounding Connections: Use flat copper or galvanized steel bars to connect all exposed metal parts to the equipotential box. Ensure secure bolted connections to maintain low-resistance paths.

Wiring Access: Utilize the inlet wire openings provided in the box for neat and safe routing of conductors. Accessibility: Ensure the box door or cover allows easy inspection and maintenance, especially in local equipotential boxes with side doors. Compliance: Follow Taiwan's electrical safety standards and building codes, ensuring the contact voltage remains below 50V for safety.

Manufacturer Options in Taiwan

Delixi Electric: Offers CDPE30 equipotential bonding terminal boxes with robust steel construction and multiple wiring options. E-tan: Provides plastic and waterproof enclosures with IP68 protection, suitable for harsh environments and smart aquaculture or industrial applications.

Practical Considerations

In high-rise buildings, ensure vertical and horizontal bonding lines are properly connected to each floor's equipotential system. In humid or wet areas, prefer waterproof enclosures to prevent corrosion and maintain electrical safety. Regular inspection and maintenance are recommended to ensure all connections remain tight and corrosion-free.

By selecting the appropriate type of equipotential distribution box and following proper installation procedures, buildings in Taiwan can achieve enhanced electrical safety, reduced risk of electric shock, and compliance with local regulations.