When connecting a GEC to building steel, what must be considered regarding the size of the conductor?

When connecting a Grounding Electrode Conductor (GEC) to building steel, the correct consideration is that the size of the GEC must correlate with the size of the main conductors. This requirement ensures that the GEC provides adequate grounding for safety and performance. The GEC is designed to carry fault currents back to the grounding system safely, so its size must be appropriate to withstand potential fault conditions without overheating or failing.

The correlation with the main conductors is essential because the sizing guidelines are based on the ampacity of the conductors used in the system. When the GEC is properly sized in relation to the main conductors, it helps to ensure a low-impedance path back to the source during a fault, minimizing voltage drop and enhancing the effectiveness of the grounding system.

Such sizing rules are typically found in electrical codes and standards, which highlight the importance of building a robust electrical system that ensures safety and reliability while minimizing the risk of electrical hazards. Ensuring the GEC is proportional to main conductors maintains compliance with those standards, fostering safe electrical practices.