Sizing and protection of conductors: Difference between revisions

Latest revision as of 13:46, 26 January 2024

Selection of cross-sectional-areas of cables is certainly one of the most important tasks of the design process of an electrical installation as this greatly influences:

the selection of overcurrent protective devices,
the voltage drop along these conductors
and the estimation of the prospective short-circuit currents

This chapters details the different steps and methodologies for conductor sizing. And the specific recommendations for neutral and Protective Earth (PE) conductors sizing.

Chapter G - Contents

External links

Electrical design software

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-{{Menu Index}}
+<!-------------------------------------------------------------------------------------------------------------------------
-__NOTOC__
+----            define HERE the LETTER of this chapter (A...S). It is then used in different places further below, in this page
+-------------------------v-------------------------------------------------------------------------------------------------
+---->{{#vardefine:letter|G}}<!--
-== [[General|General&nbsp;]]  ==
-==== Electric shock  ====
+--><div class="chapter-banner">[[File:Banner-chapter_{{#var:letter}}.jpg|class=chapter-banner-img|link=]]</div>
+{{Highlightbox|text=
+<!-----------------------------------------------------------------------------------------------------------------------------
+---- Description text for this chapter - START
+------------------------------------------------------------------------------------------------------------------------------>
+Selection of cross-sectional-areas of cables is certainly one of the most important tasks of the design process of an electrical installation as this greatly influences:
+* the selection of overcurrent protective devices,
+* the voltage drop along these conductors
+* and the estimation of the prospective short-circuit currents
+This chapters details the different steps and methodologies for conductor sizing. And the specific recommendations for neutral and Protective Earth (PE) conductors sizing.
+<!-----------------------------------------------------------------------------------------------------------------------------
+---- Description text for this chapter - END
+------------------------------------------------------------------------------------------------------------------------------>
+}}
+<!--
-==== Protection against electric shock  ====
-==== Direct and indirect contact  ====
+--><!-----------------------------------------------------------------------------------
+---add chapter TOC, based on Hierarchy (DO NOT MODIFY!)
+----------------------------------------------------------------------------------------
+-->{{ch-toc|letter={{#var:letter}}}}
-== [[Protection against direct contact|Protection against direct contact]]  ==
+<!-- -----------------------------------------------------------------------------------
+---- define all properties and categories for this chapter landing page (DO NOT MODIFY!)
+----------------------------------------------------------------------------------------
+-->__NOTOC__ __NOEDITSECTION__<!--
+-->[[Has chapter letter::{{#var:letter}}| ]]<!--
+-->{{#isin:{{MediaWiki:mainpage}}}}<!--
+-->[[Category:eig-ch-landing-pages]]<!--
+-->{{ch-category|{{#var:letter}}}}<!--
+--><div>{{#addbodyclass:Chapter-TOC}}</div><!--
+--><!-- ------------------------------------------------------------------------------->
-==== Measures of protection against direct contact  ====
+==External links==
+*[https://www.se.com/ww/en/product-category/26426075-energy-management-software-solutions/?filter=business-4-low-voltage-products-and-systems Electrical design software]
-==== Additional measure of protection against direct contact  ====
+<!-- ----------------------------------------------------------------------------------------
+---- ADD BELOW external links, inter-language links, and possibly other related content links
-== [[Protection against indirect contact|Protection against indirect contact]]  ==
+-------------------------------------------------------------------------------------------->
-==== Measures of protection: two levels  ====
-==== Automatic disconnection for TT system  ====
-==== Automatic disconnection for TN systems  ====
-==== Automatic disconnection on a second fault in an IT system  ====
-==== Measures of protection against direct or indirect contact without automatic disconnection of supply  ====
-== [[Protection of goods in case of insulation fault|Protection of goods in case of insulation fault]]  ==
-==== Measures of protection against fire risk with RCDs  ====
-==== Ground Fault Protection (GFP)  ====
-== [[Implementation of the TT system|Implementation of the TT system]]  ==
-==== Protective measures  ====
-==== Coordination of residual current protective devices  ====
-== [[Implementation of the TN system|Implementation of the TN system]]  ==
-==== Preliminary conditions  ====
-==== Protection against indirect contact  ====
-==== High-sensitivity RCDs  ====
-==== Protection in high fire-risk locations&nbsp;  ====
-==== When the fault current-loop impedance is particularly high  ====
-== [[Implementation of the IT system|Implementation of the IT system]]  ==
-==== Preliminary conditions  ====
-==== Protection against indirect contact  ====
-==== High-sensitivity RCDs&nbsp;  ====
-==== Protection in high fire-risk locations  ====
-==== When the fault current-loop impedance is particularly high  ====
-== [[Residual current differential devices (RCDs)|Residual current differential devices (RCDs)]]  ==
-==== Types of RCDs  ====
-==== Description  ====
-==== Sensitivity of RDCs to disturbances <br> ====

Sizing and protection of conductors: Difference between revisions

Latest revision as of 13:46, 26 January 2024

Chapter G - Contents

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