Where is the bare grounding wire of a branch circuit connected?

The bare grounding wire of a branch circuit is connected to the metal outlet boxes to ensure safety and proper grounding of the electrical system. Grounding provides a path for electrical current to safely dissipate into the ground in the event of a fault or surge, such as a short circuit.

When the grounding wire is connected to metal outlet boxes, it helps to stabilize the voltage levels and protects individuals from potential electric shocks. In the case of a fault, the grounding ensures that the current has a safe path to follow, which in turn prompts overcurrent protection devices like circuit breakers to trip and disconnect the power, minimizing the risk of fire or injury.

It's crucial for the grounding system to be properly integrated as it not only enhances the safety of the electrical installation but also coordinates with the overall grounding system, which may include connections to the main service panel and other grounding components. By connecting to the metal outlet boxes, the grounding system becomes part of the effective safety measures in place throughout the electrical system.