What is the required distance between wires when wiring class 2 wires without a barrier?

The correct answer is based on the National Electrical Code (NEC) guidelines regarding the installation of Class 2 low-voltage control and signaling circuit wiring. When wiring Class 2 circuits without a barrier, the NEC specifies a minimum separation distance to prevent electrical interference and ensure safety.

In this context, the required distance between the wires is set to minimize the risk of any potential issues such as crosstalk or electromagnetic interference, which can arise when circuits are placed too close together. This distance is crucial in maintaining the performance of the circuits involved and ensuring compliance with safety standards.

If other options suggest distances that are too short, they do not adhere to the NEC standards, which helps maintain a safe and effective electrical installation. Thus, the choice indicating a 2-inch separation aligns with NEC regulations and reflects the necessary practices for safely wiring Class 2 circuits without a protective barrier.