Selective Coordination - 517.17 Health Care Facilities - Selective Coordination - 517.26 Essential Electrical Systems In Healthcare Systems - 620.62 Selective Coordination for Elevator Circuits - 700.27 Emergency Systems - 701.18 Legally Required Standby Systems Compliance with these code sections can best be accomplished by conducting a short circuit study as a start to the analysis.Marked Short-Circuit Current Rating - 230.82 (3) Meter Disconnect - 409.110 Industrial Control Panels - 440.4(B) Air Conditioning & Refrigeration Equipment - 670.3(A) Industrial Machinery.250.122 Equipment Grounding Conductor Protection.Safe and reliable application of overcurrent protective devices based on these sections mandate that a short circuit study and a selective coordination study be conducted. Short Circuit Current Calculations Introduction Several sections of the National Electrical Code ® relate to proper overcurrent protection.
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