What issue arises due to differing ground potential between different power sources?

Ground loops occur when there are differences in ground potential between different power sources in a system. This situation can lead to unwanted currents flowing through the grounding paths, which can induce noise and interference in the video and audio signals. The most common outcome of ground loops is a noticeable hum or buzz in audio systems or visual distortion in CCTV systems, which can significantly impact the quality of the captured footage. Proper grounding techniques, such as using isolated ground connections or differential signal processing, can help mitigate this issue and ensure clearer, more reliable CCTV performance. Understanding ground loops and their implications is crucial for effective installation and troubleshooting in CCTV systems.