Critical power: Circuit Protection in electrical/power systems
Circuit protection, as it relates to NFPA 70: National Electrical Code, can be interpreted in many ways, depending on building load and use. The electrical engineer is responsible for designing power distribution systems for buildings and ultimately making them safe for the building occupant. Understanding the full circuit-protection requirements will enable the engineer to design the safest and most reliable electrical distribution systems for buildings.
- Understand the codes and standards to create circuit protection strategies that can be applied to any building type.
- Understand the different types of overcurrent protective device strategies to apply in building electrical systems.
- Recognize the difference between ground-fault protection for equipment (GFPE) versus ground-fault circuit interrupters (GFCI; protection for personnel).
- Understand how to protect against the various types of faults.
Danna Jensen, PE, LEED AP BD+C, Principal, Certus Consulting Engineers
Rick Reyburn, PE, Executive Director of Engineering, NV5
Jack Smith, Content Manager, CFE Media LLC