What is a common error when installing grounding systems?

Connecting all metallic systems together for proper bonding is essential to ensure that any electrical fault or overcurrent can safely flow to the ground, reducing the risk of electrical shock or fire. When metallic parts of various systems are not interconnected, they can create potential differences that may be hazardous, increasing the chance of electric shock to personnel who might touch different metal surfaces. Proper bonding also helps maintain the stability of the electrical system, ensuring it operates as intended.

While excessive grounding, use of non-metallic materials, and overlooking local code requirements can impact a grounding system's effectiveness, failing to ensure that all metallic systems are properly bonded poses a direct risk to safety and reliability, underscoring the critical nature of this aspect in any grounding installation.