What must separately derived systems comply with, in addition to grounding systems regulations?

Separately derived systems must comply with specific sections of the National Electrical Code (NEC), including 250.20, 250.21, 250.22, and 250.26, depending on the context and application of the system. This requirement ensures that various aspects of grounding and bonding practices are adequately addressed for safety and performance.

Section 250.20 outlines the rules for grounding separately derived systems, particularly concerning ungrounded systems. Section 250.21 addresses the bonding requirements for these systems, ensuring they are effectively connected to ground. Section 250.22 specifies grounding and bonding considerations for separately derived systems in terms of how they relate to the overall electrical system. Likewise, Section 250.26 pertains to the applications of grounding conductors and the necessary pathways for fault currents.

By complying with these specific requirements, electrical installations ensure that they maintain safety and functionality, minimizing the risks associated with electrical faults, shock hazards, and equipment damage. Thus, adhering to these NEC sections provides both regulatory compliance and practical safety measures that are integral to effectively managing electrical systems.