AS NZS 3000 2000 amdt 1 2001 electrical installations

Title

AS/NZS 3000:2000/Amdt 1-2001 Electrical installations (known as the Australian/New
Zealand Wiring Rules)

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AS/NZS 3000/Amdt 1/2001-09-25

STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND
Amendment No. 1
to
AS/NZS 3000 :2000
Electrical installations (known as the Australian/New Zealand Wiring Rules)
REVISED TEXT
The 2000 edition of AS/NZS 3000 is amended as follows; the amendments should be inserted in the
appropriate places.

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SUMMARY: This Amendment applies to the Clauses 1.4.57, 1.8.2(c), 1.10.1, 2.4.3.2(b), 2.8.3.3.1, 2.9.8.4(b),
3.9.4.4, 3.9.4.5, 3.11.3.3(e), 4.3.6.2, 4.5.2.2(ii), 5.6.7.2, 5.7.3.5, 6.3.3.2.2, 7.1.1, 7.1.2.1, 7.1.2.2, 7.1.4.1,
7.1.4.2, 7.1.4.3, 7.1.4.4, 7.8.10.5.3, 7.9.1, 7.9.2.1, 7.9.2.2, 7.10.9.2 & 7.10.9.4 and FIGURES 3.1, 7.1A (in
part) on Pages 172, 173 & 174, 7.1B (in part) on Pages 175 & 176, 7.1C on Page 177 and 7.1D on Page 178,
TABLE 3.6 and APPENDICES A, B and D.
Published on 25 September 2001.
Approved for publication in New Zealand on behalf of the Standards Council of New Zealand on
24 August 2001

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Page 21 Clause 1.4.57
1.

Delete the NOTE to Item (c) and insert the following:
NOTE: Elastomer sheathed cables in accordance with the AS/NZS 5000
series, sheathed flexible cords in accordance with AS/NZS 3191 other than

the ‘light duty’ type, and sheathed neutral-screened cables in accordance with
AS/NZS 3155 are deemed to provide double insulation between the
conductors of the cable and any metal in contact with the cable. The use of
flexible cords of the ‘light duty’ type as supply flexible cords is covered in
equipment Standards.

2.

Delete the NOTE to Item (d) and insert the following:
NOTE: Aerial bundled cables in accordance with AS/NZS 3560.1 are deemed
to provide reinforced insulation provided they meet the requirements for
reinforced insulation detailed in AS/NZS 3100.

Page 39 Clause 1.8.2(c)
Delete Item (a) of the NOTE and insert the following:
(a) For Australia, 230/400 V +10% −6% (in accordance with AS 60038); and
Page 43 Clause 1.10.1
Delete first sentence and insert the following:

Electrical equipment shall be installed in accordance with the manufacturer’s
instructions and generally accepted principles of safe and sound practice.

ISBN 0 7337 4106 1


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Page 49 Clause 2.4.3.2(b)
Delete the NOTE to the equations and insert the following:
NOTE: Therefore to satisfy Equation 2.4.3.2(2), the nominal current I N of a
fuse should not exceed 90% (1.45/1.6 = 0.9) of I Z .
Page 59 Clause 2.8.3.3.1
Insert the following as the final Paragraph:

The following parts of the installation need not be controlled by a main
isolating switch or switches:
(a)

Consumers mains.

(b)

Ancillary equipment, measuring devices, and associated wiring that are
required to be connected to the supply side of the main switch or
switches, provided that this wiring and equipment are confined within or
on the switchboard.

(c)

Equipment associated with emergency systems that are connected on
the supply side of a main switch in accordance with Clause 7.10.

(d)

Equipment associated with alternative supply systems that are
connected on the supply side of a main switch in accordance with
Clause 4.8.

(e)

Fault current limiters.

(f)

Surge diverters
switchboards.

installed to protect

consumers

mains

or

main

Page 70 Clause 2.9.8.4(b)
Delete Item (b) and insert the following:

(b)

Water containers and fixed or stationary cooking appliances A
switchboard shall not be installed above open water containers or fixed
or stationary cooking appliances. If located in an area where it may be
affected by water splashing or steam the switchboard shall be provided
with a suitable enclosure or shall be installed in a cupboard with close
fitting doors.

Page 89 Clause 3.9.4.4
Delete the second Paragraph and insert the following:

Wiring systems shall be protected by one of the methods outlined in
Clause 3.9.4.6 if they pass through the immediate roof support, or are fixed
in position, within 50 mm from the underside of the roof material.


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Page 89 Clause 3.9.4.5
1.

Delete Item (b) and insert the following:

(b)

fixed or otherwise restrained in position in a hollow wall.

2.

Delete Item (ii) and insert the following:

(ii)

installed to be able to move freely within holes in supports in hollow
walls, such as studs, noggins and wall plates.

Page 90 Figure 3.1
Delete Figure 3.1 and insert the following:

Page 101 Clause 3.11.3.3(e)
Delete Item (e) and insert the following:

(e)

Bricks manufactured specifically for the protection of electric cables.

Page 102 Table 3.6
Delete Table 3.6 and insert new Table 3.6 (attached)


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TABLE 3.6
UNDERGROUND WIRING SYSTEM

1

2

3

4

5

6

7

8

9

Heavyduty
conduit*

Mediumduty
conduit*
encased
in
concrete

Heavyduty fibre
cement
conduit

Fibre
cement
pipe or
duct
encased in
concrete

Medium-or
heavy-duty
galvanized
pipe

Mediumduty rigid,
corrugated
or flexible
conduit*

Buried
direct in
the
ground

Chased in
rock with
no
enclosure
(see
Note 1)

Insulated cables
(without sheath)

A

A

NP

NP

NP

B

NP

NP

Sheathed cables

A

A

A

A

A

B

B

NP

Sheathed and
armoured and
served cables

A

A

A

A

A

A

A

C

Neutral screened
cables suitable for
underground

A

A

A

A

A

A

A

NP

Neutral screened
cables

A

A

A

A

A

B

B

NP

Armoured paper
insulated lead
covered cables
without serving

A

A

A

A

A

B

NP

NP

Type of cable

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Armoured paper
insulated lead
covered cables
with serving

A

A

A

A

A

B

B

C

Unarmoured
paper insulated

lead covered
cables without
serving

A

A

A

A

NP

B

NP

NP

Unarmoured
paper insulated
lead covered
cables with
serving

A

A

A

A

A

B

NP

NP

Served MIMS
cables

A

A

A

A

A

B

B

C

Aluminium
sheathed or strip
armoured cables
with PVC sheath

A

A

A

A

A

B

B

C

*

These conduits and any associated fittings consist of insulating material only and do not have any conductive components .

KEY:
A

=

Category A system

C

=

B

=

Category B system

NP =

Category C system
Not permitted

NOTES:
1 Underground wiring installed as a Category A system and laid in a channel chased in rock in accordance with
Category C system requirements of Table 3.7 may be deemed to be Category C.
2 See Clause 3.11.3 and Table 3.7 for installation and depth of laying requirements.


Page 117 Clause 4.3.6.2
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Delete the third Paragraph and insert the following:

The distance separating incandescent lamps of spotlights and objects,
illuminated by them, which are made of flammable material shall be not less
than the following values :
Page 121 Clause 4.5.2.2(ii)
Delete Item (ii) and insert the following:

(ii)

the secondary circuit conductors have a current-carrying capacity not
less than the rated load current of the transformer primary winding
multiplied by the ratio of the transformer primary voltage to the
secondary voltage.

Page 146 Clause 5.6.7.2
1.

Insert the following new clause number and title for existing text.

5.6.7.2.1 General
2.

Insert the following new Clause 5.6.7.2.2

5.6.7.2.2 Restricted connections for final subcircuits
The following restrictions apply to the use of protective earthing conductors:
(a)

Multicore cables Any protective earthing conductor incorporated in
the sheathing of a multicore cable with live conductors shall be used
only for the earthing of electrical equipment, including the earthing
contacts of socket-outlets, supplied through the associated live
conductors.

(b)

Cables in conduit Any protective earthing conductor laid-up with live
conductors within a conduit run shall only be used for the earthing of
electrical equipment, including the earthing contacts of socket-outlets,
supplied through the associated live conductors.


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Page 154 Clause 5.7.3.5
Delete the Clause and insert the following:

5.7.3.5 Unprotected consumers mains
Where consumers mains are not protected on the supply side by shortcircuit protective devices any exposed conductive parts associated with the
consumers mains such as —
(a)

switchboard cases, surrounds and enclosures; and

(b)

wiring enclosures; and

(c)

boxes and accessories; and

(d)

supports for aerial conductors;

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shall be earthed by a conductor, with a cross-sectional area not less than
the main neutral conductor, connected to the —
(i)

main neutral conductor or bar; or

(ii)

main earthing terminal/connection or bar.

NOTE: Clause 5.6.5.2 requires the size of the MEN link to be not less than the
cross-sectional area of the main neutral conductor.

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Page 165 Clause 6.3.3.2.2
Delete the second Paragraph and insert the following:

The resistance of the main earthing conductor or any equipotential bonding
conductor shall be not more than 0.5 Ω.
Page 168 Clause 7.1.1
Delete existing NOTE and insert the following:
NOTES:
1
For locations containing baths for medical treatment, special requirements
may be necessary.
2
Electrical equipment installed behind a fixed panel to which access may

only be gained by the use of a tool would not be considered to be in a
classified zone.


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Page 168 Clause 7.1.2.1
1.

Delete Item b (iii) and insert the following:

(iii) floor and the ceiling or the horizontal plane 2.5 m above the floor,
whichever is the lower.
2.

Delete Item c (ii) and insert the following:

(ii)
3.

floor and the ceiling or the horizontal plane 2.5 m above the floor,
whichever is the lower.

Delete Items d (ii) and (iii) including the NOTE and insert the following:

(ii)

the floor and the ceiling or the horizontal plane 2.5 m above the
floor, whichever is the lower.

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NOTE: The zones do not extend beyond the boundaries of the room.

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Page 169 Clause 7.1.2.2
1.

Zone 2 shall be —
2.

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Item (b); delete the first line and insert the following:

Delete Item (c) and the NOTES and insert new NOTES as follows:
NOTES:
1 There are no Zones 1 and 3 associated with these water containers.
2 The zones do not extend beyond the boundaries of the room.

Page 169 Clause 7.1.4.1
1.

Delete Items (b), (c) and (d) and insert the following:

(b)

In Zones 1 and 2: IPX5 in communal baths/showers; IPX4 in other
locations.

(c)

In Zone 3: IPX5 in communal baths/showers; no specific degree of
protection in other locations.


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Page 170 Clause 7.1.4.2
Delete the Clause and insert the following:

7.1.4.2 Socket-outlets
Socket-outlets shall not be installed within 0.3 m of the floor of a bathroom,
laundry or other similar location where the floor is likely to become wet.
In addition, and not withstanding the degree of protection required, the
following conditions shall apply to the installation of socket-outlets in the
classified zones:

(a)
(b)

In Zones 0 and 1 socket-outlets shall not be permitted.
In Zone 2, socket-outlets shall not be permitted unless they—
(i) are protected by a residual-current device with a maximum rated
residual current of 30 mA; and

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(ii)

are enclosed in a cupboard provided that the enclosure is
maintained during the normal operation of the connected
equipment; or

(iii) have automatic switching and are incorporated in a shaver supply
unit complying with AS/NZS 3194.
(c)

In Zone 3, socket-outlets shall not be permitted unless they are —
(i) protected by a residual-current device with a maximum rated
residual current of 30 mA; or
(ii)

supplied individually as a separated circuit in accordance with
Clause 1.7.4.5; or

(iii) supplied as an SELV or PELV system in accordance with
Clause 7.7.

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Page 170 Clause 7.1.4.3
Delete the Clause and insert the following:

7.1.4.3 Switches and other accessories
Switches and other accessories shall not be installed within 0.3 m of the
floor of a bathroom, laundry or other place where the floor is likely to
become wet.
In addition the following conditions shall apply to the installation of switches
and other accessories in the classified zones:
(a)
(b)

In Zone 0, switches and other accessories shall not be permitted.
In Zones 1 and 2, switches and other accessories with at least the
required degree of protection shall be permitted.


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Page 170 Clause 7.1.4.4
Delete Item (b) and insert the following:

(b)

In Zones 1, 2 and 3, electrical equipment with at least the required
degree of protection shall be permitted.

Page 172 FIGURE 7.1A (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
PART I — BATHS
Delete Figure and insert new Figure 7.1A (in part) BATHS AND SHOWERS, ZONE
DIMENSIONS PART I — BATHS (see attached).
Page 173 FIGURE 7.1A (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
PART II — SHOWER WITH A BASE
Delete Figure and insert new Figure 7.1A (in part) BATHS AND SHOWERS, ZONE
DIMENSIONS PART II — SHOWER WITH A BASE (see attached).
Page 174 FIGURE 7.1A (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
PART III — SHOWER WITHOUT A BASE
Delete Figure and insert new Figure 7.1A (in part) BATHS AND SHOWERS, ZONE
DIMENSIONS PART III — SHOWER WITHOUT A BASE (see attached).
Page 175 FIGURE 7.1B (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
(PLAN)
Delete Figure and insert new Figure 7.1B (in part) BATHS AND SHOWERS, ZONE
DIMENSIONS (PLAN) (see attached).
Page 176 FIGURE 7.1B (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
(PLAN)

Delete Figure and insert new Figure 7.1B (in part) BATHS AND SHOWERS, ZONE
DIMENSIONS (PLAN) (see attached).
Page 177 FIGURE 7.1C BATHS AND SHOWERS, ZONE DIMENSIONS
(ELEVATION)
Delete Figure and insert new Figure 7.1C BATHS AND SHOWERS, ZONE
DIMENSIONS (ELEVATION) (see attached).
Page 178 FIGURE 7.1D FIXED WATER CONTAINERS OTHER THAN BATHS
AND SHOWERS, ZONE DIMENSIONS
Delete Figure and insert new Figure 7.1D FIXED WATER CONTAINERS OTHER
THAN BATHS AND SHOWERS, ZONE DIMENSIONS (see attached).


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DIMENSIONS IN METRES

FIGURE 7.1A (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
PART I — BATHS


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DIMENSIONS IN METRES

FIGURE 7.1A (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
PART II — SHOWER WITH A BASE


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DIMENSIONS IN METRES

FIGURE 7.1A (in part) BATHS AND SHOWERS, ZONE DIMENSIONS
PART III — SHOWER WITHOUT A BASE


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DIMENSIONS IN METRES

FIGURE 7.1B (in part) BATHS AND SHOWERS, ZONE DIMENSIONS (PLAN)


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DIMENSIONS IN METRES

FIGURE 7.1B (in part) BATHS AND SHOWERS, ZONE DIMENSIONS (PLAN)


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DIMENSIONS IN METRES

FIGURE 7.1C BATHS AND SHOWERS, ZONE DIMENSIONS (ELEVATION)


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DIMENSIONS IN METRES

FIGURE 7.1D FIXED WATER CONTAINERS OTHER THAN BATHS AND
SHOWERS, ZONE DIMENSIONS


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Page 207 Clause 7.8.10.5.3
1.

Delete Item (a)(vii).

2.

Renumber Item (a)(viii) as Item (a)(vii).

3.

Insert new Item (b)(iv) as follows:

(iv) Bonding to the underground water piping systems as required by
Clause 5.8.2.2.

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Page 212 Clause 7.9.1
Add the following NOTE:
NOTE: An overview of this topic is contained in HB13.
Page 212 Clause 7.9.2.1
Delete the second sentence and insert the following:

The basic requirements and examples are outlined in AS 2430.1,
AS/NZS 61241.3 and the AS/NZS 2430.3 series.
Page 212 Clause 7.9.2.2
Delete this Clause and insert the following:

7.9.2.2 Recognized hazardous areas
Two general hazardous areas are recognized as follows:

(a)

Gas hazardous areas Gas hazardous areas are those in which
flammable gases or vapours are or may be present in the area in
sufficient quantities to produce an explosive gas atmosphere.
Within gas hazardous areas, three Zones (Zone 0, Zone 1, Zone 2)
are recognized and they are defined in AS 2430.1.

(b)

Dust hazardous areas Dust hazardous areas are those areas which
are hazardous because of the presence of combustible dust, fibres or
flyings.
Within dust hazardous areas, three Zones (Zone 20, Zone 21,
Zone 22) are recognized and they are defined in AS/NZS 61241.3


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Page 222 Clause 7.10.9.2
Delete Paragraphs 1 and 2 and insert the following:

7.10.9.2 Overcurrent protection
The overload characteristics of overcurrent protective devices provided on
circuits supplying fire-pump motors shall —
(a)

have an inverse time characteristic; and

(b)

be rated, or in the case of circuit-breakers be set, to —
(i)

carry 125% of the full-load motor current continuously; and

(ii)

open the circuit in not less than 20 s at 600% of the full-load
motor current.

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No other overload protective device shall be inserted between the pump
motor controller and the motor.
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Page 222 Clause 7.10.9.4
Delete Item (c) and insert the following:

(c)

not be provided with overload protective devices other than those
provided for the pump-motor circuit in accordance with

Clause 7.10.9.2.


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2001

Page 225 APPENDIX A
Delete the following in the appropriate place:

AS
2926

Standard voltages — Alternating (50 Hz) and direct

3147

Approval and test specification — Electric cables — Thermoplastic
insulated — For working voltages up to and including 0.6/1 kV

3560

Electric cables — XLPE insulated — Aerial bundled — For working
voltages up to and including 0.6/1 kV

AS/NZS
3116

Approval and test specification — Electric cables — Elastomer

insulated — For working voltages up to and including 0.6/1 kV

Insert the following in the appropriate place.

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AS
60038

Standard voltages

AS/NZS
3194

Approval and test specification — Electric shaver supply units

3560

Electric cables—Cross-linked polyethylene insulated—Aerial
bundled — For working voltages up to and including 0.6/1(1.2) kV

3560.1

Part 1: Aluminium conductors

5000

Electric cables — Polymeric insulated

5000.1

Part 1: For working voltages up to and including 0.6/1 kV

5000.2

Part 2: For working voltages up to and including 450/750 V

61241

Electrical apparatus for use in the presence of combustible dust

61241.3 Part 3: Classification of areas where combustible dusts are or may
be present
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Page 238 APPENDIX B Paragraph B5.3
Add the following as a new NOTE 3.
3
The maximum circuit lengths in Table B5.1 are related to a 0.4 s
disconnection time.
Page 258 APPENDIX D Paragraph D2
1.

Item (a); Delete the words ‘Table 3.10’ and insert ‘Table 3.9’.

2.

Item (b); Delete the words ‘Table 3.9’ and insert ‘Table 3.8’.