In multiwire branch circuits, the continuity of what should not depend on device connections?

In multiwire branch circuits, the continuity of the grounded conductor should not depend on device connections. This is critical for ensuring safety and proper functioning. The grounded conductor, typically referred to as the neutral, serves as a return path for current in the circuit. If the continuity of this conductor were to depend on device connections, it could result in situations where an open connection occurs at a device, potentially leaving parts of the circuit energized and unsafe. Properly designed systems ensure that the grounded conductor remains continuous throughout the circuit, independent of any device connections.

Additionally, maintaining the integrity of the grounded conductor ensures that the entire electrical system operates effectively and reduces the risk of shock or fire hazards. The other conductors in the multiwire branch circuit interact with devices more directly and may have their continuity affected by connections, but the grounded conductor must retain its integrity regardless of the state of those devices.