Ground plates thickness

• A. 0.8 mm
• B. 1.0 mm
• C. 1.5 mm
• D. 2.0 mm

Answer: (C)

Ground plates serve as a solid, low-impedance contact point in the grounding system, so their thickness directly affects mechanical durability and electrical reliability. If a plate is too thin, it can bend, dent, or warp when it’s clamped to conductors or exposed to soil and weather, which can break the connection and raise ground resistance over time. The 1.5 mm option hits the right balance: it’s thick enough to resist bending and maintain a clean, flat surface for secure clamps and bolts, while still being practical to fabricate, install, and handle in outdoor installations. This thickness also provides durability in harsh environments where corrosion and physical wear occur. Thinner choices are more prone to deformation and poor contact, whereas thicker ones add weight and cost without providing meaningful gains in grounding performance for typical setups.