Final answer:
In electrical systems, open conductors installed outside need to be separated from open conductors of other circuits or systems by a certain distance to ensure safety.
Step-by-step explanation:
In electrical systems, open conductors installed outside need to be separated from open conductors of other circuits or systems by a certain distance to ensure safety. This distance is typically specified by electrical codes and regulations. For example, the National Electrical Code (NEC) requires a minimum separation distance of 10 feet between open conductors of different circuits or systems in open air above a roof, and a minimum separation distance of 3 feet in an open trench.