How should lightning down conductors be attached to the ground electrode?

Attaching lightning down conductors to the ground electrode is a critical aspect of lightning protection systems that ensures effective grounding and dissipation of electrical energy during a lightning strike. The correct method involves bolting, brazing, or welding the down conductors to the ground electrode.

Bolting provides a reliable mechanical connection that allows for easy assembly and maintenance while ensuring good electrical continuity. Brazing and welding create a very strong, conductive joint which is highly resistant to corrosion and mechanical disruption, making these methods particularly suitable for ensuring the long-term integrity of the lightning protection system.

The alternative methods suggested, such as screwing or gluing, may not provide a sufficiently robust or conductive connection required for lightning protection systems. Clipping, tying, or binding may also be inadequate as they do not ensure continuous electrical conductivity or mechanical stability necessary to withstand the intense forces generated by a lightning strike. Therefore, the focused methods of bolting, brazing, or welding not only assure a secure attachment but also facilitate efficient grounding and safety from lightning strikes.