AS/NZS 3000 - 2007 amdt

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AS/NZS AS/NZS 3000:2007 Wiring Rules(Incorporating Amendment No.1)This ...AS%20NZS%203000-2007%20Amdt%201-2009%20Electrical%20installations%20(known%...
AS NZS 3000-2007 Amdt 1-2009 布线规则 分类:轻工业/手工业 格式:pdf 日期:2010-08-19 热度:收藏到书房 AS NZS 3000-2007 Amdt 1-2009 布线规则...
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AS/NZS 3000:2007/Amdt 1:2009Product Note:The Paperback edition is a ...3000-1981.Revised 1986.Revised 1991.Jointly revised and designated as AS/...
AS/NZS 3000:2000/Amdt 1:2001 AS/NZS 3000:2000/Amdt 2:2002 AS/NZS 3000:...Revised and redesignated AS 3000-1981.Revised 1986.Revised 1991....
are also a number of Standards cross-referenced in AS/NZS 3000:2007 covering electrical supply requirements for buildings.The Australian and New Zealand ...
AS 3000-Changes to Wiring Rules.The new edition of the Australian/New Zealand Standard for Wiring Rules(AS/NZS.30002007)was released in November....to the previous version of AS 30001991(Amdt No.6 January 1997)which ...
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国家标准网amendment of AS/NZS 3000 - 20072.2.1.2   Common neutral
Each single-phase circuit, and each multiphase circuit that requires a
neutral conductor for the operation of connected equipment, shall
incorporate a neutral conductor.
A common neutral conductor may be used for two or more circuits subject to
the following conditions:
(a) The continuity of the common neutral conductor shall not depend on
connections at the terminals of electrical equipment, including control
switches.
(b) Final subcircuits shall be controlled and protected by linked circuit-
breakers or linked switches.
(c) The neutral conductor shall be marked at switchboards to identify the
associated active conductors in accordance with Clause 2.9.5.5.
(d) Alternative sources of supply to a single appliance (such as a water
heater, space heater or air conditioner) shall have a common isolating
switch.
NOTES: 
1 Typical applications for common neutrals include groups of single-phase lights
arranged across multiphase supply, and separate components of a single-
phase appliance, such as a cooking unit
2 Looping of a common neutral conductor at terminals of equipment supplied
from different circuits may cause the load side neutral conductor potential to
rise to full line voltage and create a dangerous live situation when
disconnected for repair or replacement of the equipment.
3 This Clause does not preclude connection of a common neutral in a junction
box
The current-carrying capacity of a common neutral shall be determined from
the current-carrying capacity of the associated active conductors in
accordance with Clause 3.5.2.
 
Page 59   Clause 2.2.2
Delete the NOTE and replace with the following:
NOTE: Guidance on the determination of maximum demand is provided for basic
electrical installations in Appendix C.
 
Page 71   Clause 2.3.6.3
Delete the last paragraph and replace with the following:
‘A device located remotely from the electrical equipment it controls, which is
used for shutting down for mechanical maintenance, shall be provided with
facilities for securing it in the open position.’
 
Page 73   Clause 2.4.4 (a)
Replace the words ‘Clauses 2.4.2, 2.6, 3.9.4.4 or 6.2.4’ with the words
‘Clause 1.5.6’.
 
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