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

@@ Line 1: / Line 1: @@
-__NOTOC__ __NOEDITSECTION__{{Menu_Sizing_and_protection_of_conductors}}
+<!-------------------------------------------------------------------------------------------------------------------------
-=== [[Conductor sizing and protection]] ===
+----            define HERE the LETTER of this chapter (A...S). It is then used in different places further below, in this page
-* [[Conductor sizing: methodology and definition]]
+-------------------------v-------------------------------------------------------------------------------------------------
-* [[Overcurrent protection principles]]
+---->{{#vardefine:letter|G}}<!--
-* [[Practical values for a protective scheme]]
-* [[Location of protective devices]]
-* [[Conductors in parallel]]
-=== [[Practical method for determining the smallest allowable cross-sectional area of circuit conductors]] ===
-* [[General method for cable sizing]]
-* [[Recommended simplified approach for cable sizing]]
-* [[Sizing of busbar trunking systems (busways)]]
-=== [[Determination of voltage drop]] ===
-* [[Maximum voltage drop limit]]
-* [[Calculation of voltage drop in steady load conditions]]
-=== [[Short-circuit current]] ===
-* [[Short-circuit current at the secondary terminals of a MV/LV distribution transformer]]
-* [[3-phase short-circuit current (Isc) at any point within a LV installation]]
-* [[Isc at the receiving end of a feeder as a function of the Isc at its sending end]]
-* [[Short-circuit current supplied by a generator or an inverter]]
-=== [[Particular cases of short-circuit current]] ===
-* [[Calculation of minimum levels of short-circuit current]]
-* [[Verification of the withstand capabilities of cables under short-circuit conditions]]
-=== [[Protective earthing conductor (PE)]] ===
-* [[Connection and choice for protective earthing conductor]]
-* [[Sizing of protective earthing conductor]]
-* [[Protective conductor between MV/LV transformer and the main general distribution board (MGDB)]]
-* [[Equipotential conductor]]
-=== [[The neutral conductor]] ===
-* [[Sizing the neutral conductor]]
-* [[Protection of the neutral conductor]]
-* [[Breaking of the neutral conductor]]
-* [[Isolation of the neutral conductor]]
-=== [[Worked example of cable calculation]] ===
-<br>
+--><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
+------------------------------------------------------------------------------------------------------------------------------>
+}}
+<!--
+--><!-----------------------------------------------------------------------------------
+---add chapter TOC, based on Hierarchy (DO NOT MODIFY!)
+----------------------------------------------------------------------------------------
+-->{{ch-toc|letter={{#var:letter}}}}
+<!-- -----------------------------------------------------------------------------------
+---- 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><!--
+--><!-- ------------------------------------------------------------------------------->
 ==External links==
-*[http://www.technical-publications.schneider-electric.com/sites/corporate/en/products-services/technical-publications/technical-publications.page Electrical Conceptual information given in "Cahiers Techniques"]
+*[https://www.se.com/ww/en/product-category/26426075-energy-management-software-solutions/?filter=business-4-low-voltage-products-and-systems Electrical design software]
-*[http://www.schneider-electric.com/products/ww/en/5100-software/5110-electrical-design-software/?BUSINESS=4 Electrical design software]
-[[ru:Выбор сечения и защита проводников]]
+<!-- ----------------------------------------------------------------------------------------
-[[zh:电路保护]]
+---- ADD BELOW external links, inter-language links, and possibly other related content links
+-------------------------------------------------------------------------------------------->

Sizing and protection of conductors: Difference between revisions

Latest revision as of 13:46, 26 January 2024

Chapter G - Contents

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