Continuing Bonding and Grounding Conductors - What the Code Really Says

Introduction

Proper bonding and grounding of electrical systems is crucial for safety. However, the specific requirements around continuing bonding and grounding conductors as stated in the National Electrical Code (NEC) can be confusing. In this article, I will break down the key points and clarify what the code really says about continuing bonding and grounding conductors.

What are Bonding and Grounding Conductors?

Bonding conductors provide electrical connectivity between metal parts to maintain equal voltage between the parts. This equalizes the voltage to prevent current flow, reducing the risk of shock.

Grounding conductors provide a low-impedance path to the ground to safely dissipate fault current and lightning strikes without causing damage or injury.

Bonding and grounding work together to protect people and equipment.

Continuing vs Supplementary Bonding and Grounding Conductors

The NEC makes a distinction between continuing and supplementary bonding and grounding conductors:

The key difference is that continuing conductors provide an unbroken path, while supplementary conductors enhance bonding and grounding in specific locations.

Requirements for Continuing Bonding and Grounding Conductors

The NEC has specific rules around continuing bonding and grounding conductors:

Continuity

Wire and Conduit Sizing

Isolation

Separate from Grounded Conductors

Common Misconceptions

Some common misconceptions about continuing bonding and grounding conductors include:

Conclusion

The key points to remember about continuing bonding and grounding conductors are:

Following these code requirements ensures proper bonding and grounding to protect people and equipment. Let me know if you have any other questions!