What is a common requirement for ground detection equipment in ungrounded systems?

In ungrounded systems, a common requirement for ground detection equipment is that it must be installed as close as practicable to the service. This is vital because the proximity of the ground detection equipment to the service point allows for more accurate monitoring and detection of potential ground faults. By being near the service entrance, the equipment can respond promptly to any imbalances or faults that may occur in the electrical system. This ensures that if an insulation failure occurs, it can be detected quickly to prevent hazards from developing.

Positioning the ground detection equipment close to the service not only enhances safety but also improves the reliability of the monitoring system. The closer proximity means that the detection equipment can better represent the current state of the system and any potential issues that may arise. In an ungrounded system, where there is no intentional grounding, this ability to quickly detect faults becomes even more critical for protecting both personnel and equipment.