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Introduction 2

fault

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Mohamed Wahid
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26 views1 page

Introduction 2

fault

Uploaded by

Mohamed Wahid
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Introduction

Several sections of the National Electrical Code relate to proper overcurrent 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. These sections include, among others:
110.9 Interrupting Rating
110.10 Component Protection
240.1 Conductor Protection
250.122 Equipment Grounding Conductor Protection
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
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

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