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AS/NZS 3008.1.1:1998
Electrical installations - Selection of cables - Cables for alternating voltages up to and including 0.6/1 kV - Typical Australian installation conditions


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General Product Information

Document Type Standard
Status Superseded
Publisher:    Standards Australia
Committee EL-001
Superseded By:
AS/NZS 3008.1.1:2009
Supersedes:
AS 3008.1-1989
DR 96408 (in part)



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Table of Contents

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Abstract

Sets out the procedures to be followed for the selection of cables to satisfy typical Australian installation conditions where the ambient air temperature is 40°C and ambient soil temperature is 25°C. Criteria given are current-carrying capacity, voltage drop and short-circuit temperature rise.

Scope

This Standard sets out a method for cable selection for those types of electrical cables and methods of installation which are in common use at working voltages up to and including 0.6/1 kV at 50 Hz a.c.
Three criteria are given for cable selection, as follows:
(a) Current-carrying capacity.
(b) Voltage drop.
(c) Short-circuit temperature rise.
This Standard provides sustained current-carrying capacities and voltage drop values for those types of electrical cable and installation practices in common use in Australia. A significant amount of explanatory material is also provided on the application of rating factors which arise from the particular installation conditions of a single circuit or groups of circuits. Also, provided in Section 5 is information on cable selection based on short-circuit temperature limits.
NOTE: A number of worked examples on cable selection are included in Appendix A.
This Standard does not take into account the effects that may occur owing to temperature rise at the terminals of equipment and reference is necessary to AS 3000 and the individual equipment Standards.
Application
This Standard is intended to apply to installations made or carried out after the date of publication, but it is recommended that it not be applied on a mandatory basis until 6 months after the date of publication. However, if work on an installation commenced before publication of this edition, the inspecting authority may grant permission for the installation to be carried out in accordance with the superseded edition.

History

First published in Australia as AS 3008.1-1984.
Second edition 1989.
Jointly revised and redesignated AS/NZS 3008.1.1:1998.

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