Earth Rod Clamps-Rod to Tape Couplings

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Earth rod clamps and rod to tape couplings are essential mechanical connectors used to securely bond earthing rods to flat copper or aluminum tape. While "A-type" or "G-type" earth clamps provide the primary electrical connection for fault currents, rod to tape couplings are specialized units that screw onto the air rod to facilitate a bolted interface with lightning protection conductors

In the design of modern earthing and lightning protection systems, ensuring low contact resistance at the connection point is as critical as the conductivity of the rod itself. These accessories are engineered from high-strength, corrosion-resistant alloys like bronze, gunmetal, or naval brass to withstand decades of direct burial or exposure.

1. Earth Rod Clamps (A-Type & G-Type) [1]

Rod to Tape (A-Type): Named for its "A" shape, this clamp securely holds flat tape while fitting tightly around the earthing rod. It uses stainless steel or phosphor bronze screws to create a gas-tight mechanical bond.
Rod to Cable (G-Type): A parallel-groove variant designed to join earth rods to stranded copper conductors, often used in utility and light-duty distribution systems.
Multi-Purpose Clamps: Advanced designs like the Wallis GTI254 allow rods to self-center and can accommodate both horizontal and vertical tape installations without requiring the tape to be punched.

2. Rod to Tape Couplings

Mechanism: Unlike a side-mounted clamp, a rod to tape coupling typically features an internal thread that screws directly onto the top of an air rod or elevation rod.
Structural Integration: These are frequently used with side mounting brackets or holdfasts to secure air terminals on building facades or parapets.
Material Variety: Manufacturers like Nexus Metal & Alloys produce these in Brass CZ360, Bronze, and Aluminum to prevent galvanic corrosion when used with dissimilar conductors.

3. Critical Selection Factors

Tightening Torque: For industrial systems, achieving a tightening torque of approximately 15 Nm is often specified to ensure permanent electrical continuity.
Direct Burial Rating: Clamps used below ground should be specifically rated for direct burial (DB), indicating they can withstand soil-born moisture and chemicals without degrading

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+01329 729 247

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Earth Rod Clamps-Rod to Tape Couplings

Address:	Corporate Office: Gulshan Palladium, C-1 (Level-5-F), Road-95, Gulshan-2, Dhaka
Phone:	+01329 729 247
Email:	[email protected]

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+01329 729 247

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Earth Rod Clamps-Rod to Tape Couplings

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