RedVector RV-5898

Overcurrent Protection I - Short Circuit Calculations

Overcurrent Protection I - Short Circuit Calculations

3 hrs. Online Course

Level: Fundamental

Item#: RV-5898

SME: Vector Solutions Commercial

This 3-hour interactive online course reviews the principles of electric systems during faulted conditions and how short circuit currents are calculated in both three-phase and single-phase systems. Since short circuits have such damaging impacts on an electric system, the magnitude of the expected faults currents and their impact on the components in the circuit must be understood. The simplified analytical procedures presented in this course will allow the user to quickly determine the expected level of fault currents in an electric system. These procedures are generally considered adequate for most applications of 600-volts or less.


Vector Solutions has a long history of providing industry-specific content for its customers. While this course and its content remain accurate and functional within our systems, the look and feel may not match our more modern offerings.
Course Objectives

This course reviews the principles of electric systems during faulted conditions and how short circuit currents are calculated in both three-phase and single-phase systems. After taking this course you will:

  • Understand the NEC® requirements for equipment protection
  • Understand what short circuit currents are and the impact on circuits
  • Know how to calculate short circuit currents using the per-unit method
  • Know how to calculate short circuit currents in both three-phase and single-phase applications.

This course includes a multiple-choice quiz to test your understanding of the material.

SUBJECT MATTER EXPERT: Vector Solutions Commercial
State Licenses
AK - Engineer (General - ,)
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DC - Engineer (General - CE21800018)
DE - Electrician (General - EEE-AC-091523-072962)
DE - Engineer (General - ,)
FL - Engineer (General - 273)
Accreditation: This 3-hour interactive course covers the fundamentals of electric systems under faulted conditions, focusing on short circuit current calculations for both three-phase and single-phase systems. It introduces simplified analytical methods to quickly estimate fault current levels, helping users understand their effects on circuit components. These techniques are suitable for most low-voltage applications up to 600 volts.
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Accreditation: Vector Solutions is authorized by IACET to offer 0.30 CEUs for this program
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Accreditation: Vector Solutions is authorized by IACET to offer 0.3 CEU for this program.
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Professional Organizations
American Academy of Environmental Engineers - AAEES - Member (General - ,)
Association of Energy Engineers - AEE - Certification (Technical)
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International Electrical Testing Association - NETA - ETT Certification (Technical)
Accreditation: This course is eligible for 3 NETA Continuing Technical Development Credits (CTDs). NETA Certified Technicians (Level III and Level IV) are required to earn a minimum of 48 CTDs every three years to maintain their certification. For more information about the CTD program and requirements, please contact the NETA office at neta@netaworld.org or 888-300-6382.
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