What does the term "separately derived system" refer to in the context of bonding?

The term "separately derived system" refers to a system that originates from a separate source, which is the correct understanding in this context. This concept is crucial in the realm of electrical grounding and bonding because it signifies that the system derives its electrical energy from a source other than the main electrical service.

This could include systems like generators or distribution transformers where the secondary side is not connected to the primary service ground. Consequently, it necessitates its own grounding and bonding practices to ensure safety and prevent potential differences that could cause shock hazards or damage to equipment.

Understanding this term is essential for compliance with electrical codes and ensuring safe operation, as it dictates how systems should be grounded to prevent electrical faults. Proper bonding and grounding of separately derived systems help to ensure that during fault conditions, the safety devices will operate correctly and effectively protect both personnel and equipment.