What material is recommended for guy wiring bonding?

• A. Copper conductor with brass clamps
• B. Stainless Steel or other approved clamp, tinned copper conductor recommended
• C. Aluminum clamps with copper wire
• D. Plastic clamps with copper tape

Answer: (B)

Bonding guy wires requires a connection that stays reliable outdoors, resisting corrosion and maintaining electrical continuity over time. The best choice uses stainless steel or other approved clamps paired with a tinned copper conductor for the bonding jumper. Stainless steel clamps provide the durability and corrosion resistance needed for outdoor bonding and ensure a solid, lasting mechanical and electrical connection to both the guy wire and the structure. The tinned copper conductor helps prevent oxidation at the connector, improving contact reliability in harsh environments.

Other material combinations can introduce problems: brass clamps with copper can corrode or aren’t the approved pairing, aluminum clamps with copper wire can set up galvanic corrosion where the metals meet, and plastic clamps with copper tape simply don’t offer the robust, permanent bond required for outdoor guy wiring.