STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND

Transcription

1 AS/NZS 3000/Amdt 1/ STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Amendment to AS/NZS 3000:2007 Electrical installations (known as the Australian/New Zealand Wiring Rules) REVISED TEXT The 2007 edition of AS/NZS 3000 is amended as follows; the amendments should be inserted in the appropriate places. SUMMARY: This Amendment applies to the Preface, Contents, List of Tables, List of Figures, Clauses , , , , 1.7.2, 1.7.4, , 2.2.2, , 2.4.4, , , , , , , 2.7.2, 2.9.1, , , , , , , , 3, 3.5.2, , 3.7.3, 3.8.2, , , , , , , , , , , , , , , , , , , , , 5.4.3, , , , 6.3.1, , , 6.7.1, , , , , , 7.6.3, , , 8.1.2, , , , Paragraphs A1, A2, B , B , B4.1, B4.3, B4, B4.3, B4.6, B5.2.2, B5.2.3, C , C , C , C3.1, C5.1, D2.2, D4.2.1, D4.2.2, E2.2, E2.3, E3.3, and Appendix K, Tables 3.5, 3.7, 5.1, 5.2, 6.2, 8.2, B1, C1, C9, C10, C11, D2, D13(a), H2 and Figures 2.19, 3.1, 3.2, 3.10, 3.11, 3.13, 3.14, 3.16, 4.7, 5.3, 5.5, 6.5, 6.7, 6.9, 6.10, 6.11, 7.2, 7.3, 7.4, 7.5, 7.6, B1, B4 and D1. Published on 30 July. Approved for publication in New Zealand on behalf of the Standards Council of New Zealand on 10 July. Page 2 Preface Delete the first paragraph and replace with the following: This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee EL-001, Wiring Rules, to supersede, in Australia/New Zealand, AS/NZS 3000:2000, Electrical installations (known as the Australian/New Zealand Wiring Rules). Page 5 Preface (xviii) Delete the text and replace with the following: (xviii) The location of underground cables must be marked at entry to or exit from a structure or recorded on a map. Page 5 Preface (xxiii) Delete the text and replace with the following: (xxiii) Illustrations of the multiple earthed neutral (MEN) system have been improved and clarification of the relationship of the MEN system to the IEC systems has been added. Page 6 Preface (xliii) Delete the text and replace with the following: (xliii) Verification of earth fault-loop impedance for socket-outlet circuits not protected by an RCD is now a mandatory test for both Australia and New Zealand. ISBN

2 Page 11 Contents Mark Appendix K as deleted. Page 14 List of Tables Mark Figures K1 and K2 as deleted. Page 16 List of Figures 1 For Figure 3.1, change the title to SINGLE-PHASE CABLES. 2 For Figure 3.2, change the title to MULTIPHASE CABLES. 3 Mark Figure K1 as deleted (page 18). Page 31 Clause Exception (v) In the first line, add the words or hinged after removable. Page 33 Clause Insert the following as Item (c) and renumber Items (c) and (d) as (d) and (e): (c) The neutral bar or link in a switchboard without an MEN connection where the active supply to the switchboard has been isolated. Page 33 Clause Add at the end of the clause or to the earthing system of the source of supply. Page 46 Clause In the first line, replace the word protection with limitation. Page 52 Clause 1.7.2(g) Delete the words and in accordance with the product specification. Page 53 Clause 1.7.4(b) 1 In the first line, replace the word enhanced with additional. 2 Alter present to presents in the 2nd line of the sentence.

3 Page 58 Clause Delete the text and replace with the following: 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 circuitbreakers or linked switches. (c) The neutral conductor shall be marked at switchboards to identify the associated active conductors in accordance with Clause (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 singlephase 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 Page 59 Clause 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 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 (a) Replace the words Clauses 2.4.2, 2.6, or with the words Clause

4 Page 74 Clause In NOTE 2 replace Clause with Clause Page 77 Clause In NOTE 3, replace Clause B3.2.1 with Paragraph B Page 98 Clause Delete the entire clause and replace with the following: Arrangement Where additional protection of final subcircuits is required, in accordance with Clause 2.6.3, the final subcircuits shall be arranged as follows: (a) In all electrical installations where (i) the number of RCDs installed exceeds one; and (ii) more than one lighting circuit is installed lighting circuits shall be distributed between RCDs (b) In residential installations (i) not more than three final subcircuits shall be protected by any one RCD; and (ii) where there is more than one final subcircuit, a minimum of two RCDs shall be installed. NOTE: These arrangements are intended to minimize the impact of the operation of a single RCD. Page 98 Clause Delete the NOTE following (b) and replace with the following: NOTE: For the purpose of this Clause, combination fan, light and heater units, exhaust fans and ceiling sweep fans are all regarded as lighting points. Page 99 Clause Add the following new exception: 3 This requirement need not apply to a socket-outlet or a connecting device specifically for the connection of a fixed or stationary electric cooking appliance, such as a range, oven or hotplate unit provided that (a) the socket-outlet is located in a position that is not likely to be accessed for general purposes; and (b) the socket-outlet is clearly marked to indicate the restricted purpose of the socket-outlet and that RCD protection is not provided.

5 Page 99 Clause Delete the entire clause and replace with the following: Other electrical installations Australia Additional protection by RCDs with a maximum rated residual current of 30 ma shall be provided for (a) final subcircuits supplying socket-outlets where the rated current of any individual socket-outlet does not exceed 20 A; and (b) final subcircuits supplying lighting where any portion of the circuit has a rated current not exceeding 20 A; and (c) final subcircuits supplying directly connected hand-held electrical equipment, e.g. hair dryers or tools. NOTE: The final subcircuits referred to in Item (b) include, without limitation, those supplying the following equipment: (a) External lighting installations, such as bollard-type luminaires. (b) Illuminated signs. (c) In-ground lighting. (d) Ground-mounted lighting for the illumination of public features. Exception: This requirement need not apply: 1 Where other methods of protection are applied, e.g. a separated supply in accordance with Clause Where socket-outlets on the final subcircuit are protected by a socketoutlet RCD. 3 Where specific provisions for electrical installations exist through the application of other Standards, e.g. AS/NZS 3001, AS/NZS 3002, AS/NZS 3003, AS/NZS 3004 and AS/NZS To special situations referred to in Sections 6 and 7 of this Standard that require RCD protection which shall be provided in accordance with the requirements of the relevant Clause. 5 Where the disconnection of a circuit by an RCD could cause a danger greater than earth leakage current. 6 Where all socket-outlets on a final subcircuit are installed for the connection of specific items of equipment, provided that (a) the connected equipment is required by the owner or operator to perform a function that is essential to the performance of the installation and that function would be adversely affected by a loss of supply caused by the RCD operation; and (b) the connected equipment is designed, constructed and used in such a manner that is not likely to present a significant risk of electric shock; and (c) the socket-outlet is located in a position that is not likely to be accessed for general purposes; and (d) the socket-outlet is clearly marked to indicate the restricted purpose of the socket-outlet and that RCD protection is not provided. A

6 7 To a socket-outlet or a connecting device specifically for the connection of a fixed or stationary cooking appliance, such as a range, oven or hotplate unit. In these applications the socket-outlet shall be clearly marked to indicate the restricted purpose of the socket-outlet and that RCD protection is not provided. The socket-outlet shall be located in a position that is not likely to be accessed for general purposes. Additional protection by RCDs with a maximum rated residual current of 30 ma shall also be provided in accordance with the requirements and regulations of legislation, such as Occupational Health & Safety legislation. NOTE: In areas where excessive earth leakage current could present a significant risk in the event of failure of other measures of protection or carelessness by users, RCDs are designed to provide additional protection against the effects of electric shock by automatically disconnecting supply before serious physical injury can occur New Zealand Additional protection by RCDs with a maximum rated residual current of 10 ma shall be provided for final subcircuits supplying socket-outlets in areas normally accessible by children in (a) kindergartens; and (b) day care centres for pre-school children; and (c) primary schools. Exception: This requirement need not apply: 1 Where other methods of protection are applied, e.g. a separated supply in accordance with Clause Where socket-outlets on the final subcircuit are protected by a socketoutlet RCD. 3 Where specific provisions for electrical installations exist through the application of other Standards, e.g. AS/NZS 3001, AS/NZS 3002, AS/NZS 3003, AS/NZS 3004 and AS/NZS To special situations referred to in Sections 6 and 7 of this Standard that require RCD protection which shall be provided in accordance with the requirements of the relevant Clause. Page 100 Clause Add the following words at the start of the clause: Where the circuit protection on a switchboard is completely replaced, additional protection by RCDs as required in Clause 2.6 shall be provided for the final subcircuits supplied from that switchboard. Page 101 Clause 2.7.2(a) Delete the words Clause and replace with Clause Page 103 Clause Remove the italic font and replace with normal font in the third paragraph beginning A main switchboard.... NZ

7 Page 104 Clause (c)(i) Replace the words the open with any. Page 104 Clause (c)(ii) 1 Delete the words egress paths and replace with emergency exit paths. 2 Delete the paragraph beginning Doors of a switchroom... and replace with the following: Doors of switchrooms, or other rooms dedicated to switchboards, shall open in the direction of egress without the use, on the switchboard side of the door, of a key or tool. Page 107 Figure 2.19 Delete the figure and title and replace with the following: > 0.6 m > 0.6 m > 0.6 m FIGURE 2.19 ACCESS TO SWITCHBOARDS FACING SWITCHBOARDS Page 107 Clause (a) Delete the words Clause and replace with Clause Page 108 Clause Delete Exception 4.

8 Page 109 Clause (j) Delete the exception and replace with the following: Exception: A switchboard may be installed in the vicinity of an automatic fire sprinkler system if at least one of the following conditions is satisfied: (A) The switchboard is provided with degree of protection IPX4, in accordance with AS (B) The switchboard is provided with a shield to prevent water spraying on it. (C) Sprinkler heads that could project water on the switchboard are provided with suitable deflectors. (D) Sprinkler heads are of the dry type. Page 110 Clause (k) Delete the entire NOTE and replace with the following: NOTES: 1 The following situations may give rise to a hazardous area: (a) Bottled gas cylinders with an aggregate gas capacity exceeding 30 m 3. (b) Gas-tank filling or discharge connections. (c) Pressure relief device discharge points fitted to gas installations. 2 Refer to AS/NZS for information regarding hazardous areas. 3 An example of a hazardous area presented by a bottled gas cylinder is shown at Figure For an insitu filled gas cylinder larger distances are required. Page 111 Clause Add the words or where each device is clearly marked to indicate the off position at the end of the exception. Page 113 Clause Delete the text of the clause and replace with the following: All equipment installed on a switchboard shall be identified in accordance with the requirements of Clauses to NOTE: See Clauses and for the marking requirements of main switches and additional isolating switches. Page 114 Clause In the first line of the first paragraph, replace the word that with the word the.

9 Page 127 Clause Delete Exception 2, Exception 3 and sub-clause (c) and replace with the following: 2 The neutral conductor of a multiphase circuit may have a currentcarrying capacity lower than that determined by this Clause, provided that a detection device is fitted and arranged so that the neutral current cannot exceed the current-carrying capacity of the neutral conductor. 3 The neutral conductor of a multiphase circuit may have a currentcarrying capacity less than that of the largest associated active conductor, provided that the predominant load consists of multiphase equipment and the current-carrying capacity is not less than the maximum out of balance current, including any harmonic component. (c) PEN conductors The minimum size of a combined protective earth and neutral (PEN) conductor of consumers mains, or of a submain to an outbuilding of an electrical installation forming a separate MEN installation in accordance with Clause , shall (i) comply with the requirements of Item (a) or Item (b), as appropriate; and (ii) be not less than that of an earthing conductor as required by Clause Page 131 Clause In the NOTE, delete the words (see Clause ) and replace with (see Clause ). Page 132 Clause In Exception (d), delete the words Clause and replace with Clause Page 133 Clause In the third paragraph, beginning Single-core cables... add the word continuously after the word identified. Page 134 Clause In Item (a), add the word flexible before the word cables. 2 Add the following Item (c): (c) insulated aerial conductors are identified by a number of small longitudinal ribs around the circumference, the neutral conductor shall be identified by multiple longitudinal ribs evenly spaced around the entire circumference and length of the conductor that clearly distinguish it from the other conductors. Page 134 Clause In the first and second paragraphs delete the words flexible cords and.

10 Page 135 Figure 3.1 Change Figure caption to SINGLE-PHASE CABLES : Page 135 Figure In the left heading delete AND FLEXIBLE CORDS. 2 Replace the right heading with EUROPEAN CABLES. 3 Remove the dividing line under the heading. 4 Delete the figure and caption and replace with the following: Red... Phase/Line 1... Brown White... Phase/Line 2... Black Blue... Phase/Line 3... Grey Black... Neutral... Blue Green/Yellow... Earth... Green/yellow FIGURE 3.2 MULTI-PHASE CABLES Page 140 Clause Add the following sub-heading directly under the main heading: Prohibited locations. 2 Add the following words at the end of the NOTE: are shown in Figures 3.6 and Add the following sub-heading to the paragraph commencing Wiring systems shall be protected under Figure 3.6: Protection required. Page 141 Clause Change the second clause reference from to In Item (c), delete the words in lieu of mechanical protection. Page 144 Clause In the first paragraph, replace the words Clauses to with the words Clauses to Page 146 Clause In Item (b), second paragraph, replace the words Clause with Clause

11 Page 147 Clause In Item (c), second paragraph, delete the word underground before the word telecommunications. 2. In Item (c), NOTE (c), delete the words in Figures 3.8 and 3.9, and replace with the words in Figure 3.9. Page 149 Clause At the end of Item (a) delete the words, in accordance with Clause 3.3 Page 155 Clause In the NOTE, delete the words Clause and replace with Clause Page 156 Clause In Item (c), add the word sheathed before the word cables. Page 157 Table 3.5 Delete the heading of Column 5 and replace with the following: Fibre cement conduit encased in concrete Page 158 Clause Add the following words to the end of the line under Item (b):... or below any poured concrete laid on that surface (see Figures 3.10 to 3.16). Page 160 Figure 3.10 Delete the figure and replace with the following: 75 mm (minimum) continuous poured concrete over underground cable position Marker tape Cable bedding, see Note Category A wiring system from Table 3.5

12 Page 160 Figure 3.11 Delete the figure and replace with the following: Ground level no covering on surface of the ground or less than 75 mm continuous poured concrete 250 Marker tape 500 Page 161 Figure 3.13 Delete the figure and replace with the following: Cable bedding, see Note Category A wiring system from Table mm (minimum) continuous poured concrete over underground cable position min. Marker tape Mechanical protection system (e.g. polymeric cable cover strip as shown) Cable bedding, see Note Category B wiring system from Table 3.5

13 Page 162 Figure 3.14 Delete the figure and replace with the following: Ground level no covering on surface of the ground or less than 75 mm continuous poured concrete 250 Marker tape min. Mechanical protection system Cable bedding, see Note Category B wiring system from Table 3.5 Page 163 Figure 3.16 As the scaling of this figure was too large, it is reproduced here in the correct size Solid rock Page 163 Clause Delete the text of this clause and replace with the following: 50 Concrete Chase cut in rock Marker tape Category C wiring system from Table 3.5 To minimize damage to wiring systems installed underground during manual or mechanical excavation works, the location of underground wiring shall be marked or recorded as follows: (a) Permanent cable marker signs shall be provided to indicate the point where a cable enters or leaves a structure; or Exception: Cable entry signs need not be provided where the position of underground cable entry into the ground is obvious. (b) The route of any underground cable shall be recorded on a plan to enable the location of the cable to be determined in the future. This plan shall be located at the switchboard from which the circuit originates. The plan locating the consumers mains shall be kept at the main switchboard of the installation to which it is connected.

14 Exception: Marking of underground wiring is not required within the confines of a building. Page 164 Table 3.7 Delete the heading of Column 3 and replace with the following: Minimum separation of conductive enclosures to low voltage electrical earthing electrode 1 Page 165 Clause Delete the text of the clause and replace with the following: Aerial conductors shall be insulated in the following situations: (a) For any conductor span that is attached to a building or structure. Exception: This requirement need not apply to aerial conductors between and supported by two independent poles or similar independent supports. (b) For any conductor span within arms reach of any building, building opening or structure. (c) Above areas where sailing craft or irrigation pipes are used (see Table 3.8). (d) In areas declared by the responsible Fire Authority as being subject to bushfires, where required by the regulatory authority or the electricity distributor. Page 181 Clause In the last paragraph commencing Where socket-outlets are installed last line, replace the word not with the word that. Page 184 Clause In the exception, correct the spelling of the word permitted. Page 186 Clause Add new NOTE 3 as follows: 3 In New Zealand, additional information is provided in NZECP 54:2001 entitled New Zealand Code of Practice for the installation of recessed luminaries and auxiliary equipment. Published by Energy Safety Service, Ministry of Consumer Affairs, Wellington, NZ. 2 Add a NZ box in the margin.

15 Page 186 Figure 4.7 Delete the figure and replace with the following: Combustible building element above fitting Barrier required for loose fill insulation or loose combustible materials Transformer 50 mm A B Combustible building structural member C Thermal insulation Recessed luminaire Page 196 Clause At the end of Item (a)(ii), remove the words ; or. Page 211 Clause Delete the last paragraph on the page beginning Where the summation of crosssectional areas exceeds... Page 213 Table 5.1 Add a new row at the end of the table to read: >630 25% of active size 25% of active size Page 213 Clause Delete the first two paragraphs and replace with the following: Where the main earthing conductor connects the main earth terminal to an electrode (arrangement depicted in Figure 5.1), the conductor shall be determined from Table 5.1 in relation to the cross-sectional area of the largest active conductor of the consumers mains. The cross-sectional area of such a copper main earthing conductor shall be not less than 4 mm 2 and need not be greater than 120 mm 2. 2 Add the following paragraph and NOTE, after the exceptions: Where the conductor connects the main earth bar to an earth bar or link within a substation (arrangement depicted in Figure 5.2), the conductor shall be determined from Table 5.1 or by calculation. NOTE: In this application the main earthing conductor forms part of the earth fault current path and its size needs to be determined based on the prospective fault current level and duration. Page 214 Clause At the end of the Exception to Item (a), change 1 mm2 to 1 mm 2.

16 Page 217 Table 5.2 In the row Copper cable, column 3, change entry under Minimum dimensions to 25 mm 2. Page 217 Clause Align the NZ box with the text in (ii). Page 220 Clause In Item 1 of the exceptions add the following words to the end of the sentence:... and Zone 0 of fountains and water features installed in accordance with Clause Page 225 Figure 5.3 Delete the figure and replace with the following: Main neutral bar Earth electrode *5.3.6 and * and * Main neutral conductor MEN connection Main earth bar or terminal/connection Main switchboard * (a) * (d) * (b) * (a) * (d) * (b) * (a) * (d) * (b) LEGEND: * DB = = = = = Any one Any one Any one Subcircuits supplied from main switchboard DB1 DB2 * DB * (c) * (d) * (b) Clause number Protective earthing conductor Earthing connection at equipment or exposed conductive part Distribution board Switchboard earth bar or terminal/connection Active conductors for DB2 shall be supplied from DB1 * (c) * (d) * (b) Any one Any one Subcircuits supplied from DB Subcircuits supplied from DB2

17 Page 229 Clause At the end of Item (b), change the measurement to 25 mm 2. Page 233 Figure 5.5 Delete the figure and replace with the following: * Non-conductive water piping under floor and in wall cavity. Internal access. Equipotential bonding not required. * Non-conductive water piping from ground to conductive piping. Internal access. Equipotential bonding not required. LEGEND: = Conductive water piping = Non-conductive water piping * NOTE: Bonding recommended if conductive path exists from tap to ground through building materials Page 234 Clause Delete the text of the clause and replace with the following: Any conductive reinforcing within a concrete floor or wall of a room containing a shower or bath shall be bonded to the earthing system of the electrical installation. An equipotential bonding conductor, in accordance with Clause 5.6.3, shall be connected between the reinforcing material and any part of the earthing system. NOTES: 1. This requirement is intended to avoid any potential differences that may occur between conductive material connected to, or in contact with, the electrical installation earthing system or earthed electrical appliances and the concrete floor or wall. 2. Renumber existing notes 2,3,4.

18 Page 244 Clause Delete Item (b) and replace with the following: (b) Zone 2 Socket-outlets installed in Zone 2 shall be (i) of the automatic switching type incorporated in a shaver supply unit complying with AS/NZS 3194; or (ii) protected by an RCD with a fixed rated residual current not exceeding 30 ma and enclosed in a cupboard that maintains the enclosure of the socket-outlet during normal operation of the connected equipment. Page 251 Figure 6.5 Delete the figure and replace with the following: Zone 0 LEGEND: b a r 1 Zone Zone Zone 3 Fixed partition b = width of barrier r 1 = 0.6 a b = Zone 0 = Zone 1 = Zone 2 = Zone 3

19 Page 253 Figure 6.7 Delete the figure and replace with the following: Fixed shower plumbing connection Zone 0 Zone Zone 3 LEGEND: = Zone 0 Zone 2 Barrier = Zone 1 = Zone 2 = Zone 3

20 Page 255 Figure 6.9 Delete the figure and replace with the following: Fixed shower plumbing connection Zone 1 Zone Zone 3 Zone Barrier Zone 3 LEGEND: = Zone 1 = Zone 2 = Zone

21 Page 256 Figure 6.10 Delete the figure and replace with the following: 0.15 Zone Zone 2 Page 256 Figure 6.11 Delete the figure and replace with the following: Zone 0 Zone 2

22 Page 257 Clause Modify the last paragraph by ending it at the word zones then start new paragraph Because of the nature of these locations certain methods of protection against electric shock are not permitted. 2. Add an additional paragraph as follows: The requirements for swimming pools also apply to electrical installations in areas of natural waters, lakes in gravel pits and coastal and similar areas, especially those intended to be occupied by persons for swimming, paddling and similar purposes. Page 261 Clause In Item (a)(iii), add each luminaire, appliance or other item of electrical equipment is before supplied. 2 In Item (a)(iii) (A), delete the NOTE and replace with the following: NOTE: An individual source may be an individual isolation transformer or an individual winding on an isolation transformer having a number of secondary windings, provided that the output complies with Clause In Item (d), add the following NOTE after the text. NOTE: The use of a purpose made pump and installation to the manufacturers instructions complying with the requirements of AS/NZS for each zone is deemed to comply with the requirements of this clause. Page 262 Table 6.2 Delete the table and replace with the following:

23 TABLE 6.2 GUIDANCE ON THE SELECTION AND INSTALLATION OF ELECTRICAL EQUIPMENT FOR SWIMMING POOLS, PADDLING POOLS AND SPA POOLS OR TUBS Equipment Zone 0 Zone 1 Zone 2 Clause Socket Outlets Clause Switches/ accessories Clause (a), (b) and (c) Appliances, Luminaires and other equipment Clause (d) Heating cable systems Clause Switchboards Not permitted Not permitted for general use. For pool equipment only (i) IPX5; and (ii) (A) 0.45 m high; and 1.25 m from internal rim; or (B) under and 0.5 m from edge of fixed continuous horizontal barrier 1.25 m wide; and (iii) (A) separated supply; or (B) SELV or PELV supply; or (C) RCD protection Not permitted IPX5 IPX4 IPX8; and specifically for use; and 12V a.c./30 V d.c. SELV or PELV supply from source outside zone No earth Not applicable IPX5; and (i) SELV or PELV supply; or (ii) Class II construction (double or reinforced insulation); or (iii) Class I construction (earthed conductive parts), fixed in position and RCD protection Permitted where embedded in the floor area under the Zone and protected to Clause IPX4; and (i) separated supply; or (ii) SELV or PELV supply; or (iii) RCD protection IPX4; and (i) SELV or PELV supply; or (ii) Separated supply; or (iii) Class II construction (double or reinforced insulation); or (iv) Class I construction (earthed conductive parts), and RCD protection As for Zone 1 Not permitted Not permitted Not permitted

24 Page 269 Clause Replace Item (a)(iii) to read: (iii) each luminaire, appliance or other item of electrical equipment is supplied 2. Replace the NOTE under Item (A) to read: NOTE: An individual source may be an individual isolation transformer or an individual winding on an isolation transformer having a number of secondary windings, provided that the output complies with Clause Add the following NOTE under Item (b): NOTE: The use of a purpose made pump and installation to the manufacturers instructions complying with the requirements of AS/NZS for the relevant zone is deemed to comply with the requirements of this Clause Page 277 Clause In the NOTE 1. Add the words ;or to the end of Item (d) 2. Add Item (e) as follows: (e) Page 281 Clause car wash bays and the like. Delete the clause and replace with the following: For the purposes of this Clause 7.2, lifts shall be deemed to include electrically controlled lifts that may convey persons, but do not include any conveying device from which passengers may safely alight should the apparatus stop at any point in its travel. Exception: A lift in a single private residence that is installed in accordance with AS/NZS need not comply with the requirements of this Clause 7.2. NOTE: Although compliance with the AS 1735 series is not a requirement of this Standard, regulatory authorities may require compliance and may have additional requirements. Page 285 Clause In the first paragraph, add the words and socket-outlets after the words lighting equipment. Page 295 Clause Delete the last paragraph and the NOTE and replace with the following: AS/NZS 3010 provides guidance for connection and switching of alternative supplies and compliance with AS/NZS 3010 is deemed to satisfy Clause NOTE: Typical switching arrangements are shown in Figures 7.2, 7.3 and 7.4.

25 Page 296 Figure 7.2 Delete the caption and replace with the following: FIGURE 7.2 EXAMPLE OF CONNECTION OF AN ALTERNATIVE SUPPLY TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION (THREE POLE/FOUR POLE CHANGEOVER) (Symbols are explained in Table J1.) Page 297 Figure 7.3 Delete the figure and caption and replace with the following: NORMAL SUPPLY N L1 L2 L3 Changeover Device Generator Overcurrent Protection (where installed) GENERATING SET N-BAR E-BAR MEN EE E N L1 L2 L3 To load FIGURE 7.3 EXAMPLE OF CONNECTION OF AN ALTERNATIVE SUPPLY TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION (THREE POLE/THREE POLE CHANGEOVER) (Symbols are explained in Table J1.) Page 298 Figure 7.4 Delete the caption and replace with the following: FIGURE 7.4 EXAMPLE OF CONNECTION OF AN ALTERNATIVE SUPPLY TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION BY MEANS OF A PLUG AND SOCKET (Symbols are explained in Table J1.) L3 L2 L1 N G

26 Page 299 Figure 7.5 Delete the figure and caption and replace with the following: Main switchboard Isolation device Consumers mains (to grid and distributor s network) Main switch (Grid supply) Main switch and overcurrent protection (Solar supply) Isolation device (e.g. switch or fuse or other device) Inverter with integral grid protection device Solar (PV) array Circuits not protected by RCDs Circuits protected by RCDs An RCD is not to be placed between the consumers mains and the solar supply (see AS 4777). NOTE: Although a solar energy source is shown other sources may also be used. FIGURE 7.5 EXAMPLE OF CONNECTION OF A GRID-CONNECTED INVERTER Page 299 Clause Delete the text of the clause and replace with the following: The method of connection of a stand-alone system shall be in accordance with the AS 4509 series of Standards. NOTE: A typical stand-alone connection is shown in Figure 7.6 for an installation with a switchboard including a local MEN connection.

27 Page 300 Figure 7.6 Delete the figure and caption and replace with the following: Neutral bar MEN connection Earth bar Main switchboard Main switch Local source overcurrent protection (where installed) Local source such as generating set or inverter as part of a stand-alone power system to AS 4509 L3 L2 L1 N G Earth electrode E N L1 L2 L3 To load Protective earth to frame of source FIGURE 7.6 EXAMPLE OF CONNECTION OF A STAND-ALONE SYSTEM TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION (Symbols are explained in Table J1.) Page 310 Clause Delete the text and NOTE and replace with the following: In Australia electrical installations and those portions of electrical installations operating at high voltage shall be installed in accordance with AS Page 310 Clause Delete the first paragraph and replace with the following: When designing high voltage electrical installations, consideration must be given to a range of issues that are more significant than those for electrical installations less than 1 kv. Page 312 Clause Delete the heading and text of the clause and replace with the following: Transportable structures and vehicles including their site supplies Electrical installations in transportable structures and vehicles including their site supplies shall comply with AS/NZS 3001.

28 Page 312 Clause Delete the text and NOTES of this Clause and replace with the following: Marinas and recreational boats Electrical installations in marinas and recreational boats shall comply with AS/NZS NOTES: 1 AS/NZS 3004 is a two-part Standard as follows: (a) AS/NZS provides requirements for electrical installations on marinas; and (b) AS/NZS provides requirements for electrical installations in recreational boats. 2 In Australia, for electrical installations on commercial vessels, refer to the National Marine Safety Committee s National standard for commercial vessels Part C: Design and construction Section 5: Engineering Subsection 5B: Electrical (NSCV C 5B). A Page 315 Clause Alter the first paragraph of the NOTE to read: NOTE: Additional visual inspections and testing may be required for specific installations, such as separated supplies, SELV and PELV installations, electromedical installations, transportable structures and vehicles and marinas, etc. Page 323 Clause At Item (b), Paragraph beginning...measurements should be carried out, delete the words e.g. at a socket-outlet and replace with at the socket-outlet.

29 Page 325 Table 8.2 Delete the TABLE and replace with the following: TABLE 8.2 MAXIMUM VALUES OF RESISTANCE Conductor size Active Earth Protective Circuit breaker device rating Type B Type C Type D mm 2 mm 2 A Maximum resistances Fuses R phe R ph R e R phe R ph R e R phe R ph R e R phe R ph R e NOTES: 1 The values, which have been rounded to two decimal places, are approximately 64% of the values given in Table 8.1. This is because of the following: (a) A reduction to 80% (0.8) because of a conductor temperature of 20 C. (b) A further reduction as the length of circuits given in Table B1 were calculated using 80% (0.8) of supply voltage. The further reduction assumes that 20% of the impedance is associated with the supply transformer. This should be taken into account if in doubt. Therefore, = 0.64 (64%). 2 Resistances for active conductors (R ph) and protective earthing conductors (R e) are also provided. Page 325 Clause Delete the first two paragraphs and replace with the following: Tests shall be performed on each final subcircuit protected by an RCD to verify that the RCD operates to disconnect the designated circuit. In Australia, where supply is available, the function of the RCD shall be verified by the operation of the integral test device, or by the use of special test equipment. The NOTES remain without change. Page 326 Clause Transpose the last paragraph to be the first paragraph of the clause.

30 Page 328 Paragraph A1 1 AS/NZS 3001, change the title to Electrical installations Transportable structures and vehicles including their site supplies. 2 Delete AS/NZS 3004 and replace with 3004 Electrical installations Marinas and recreation boats Part 1: Marinas Part 2: Recreational boats installations Page 332 Paragraph A2 Add the following to the list of AS/NZS references: Household and similar electrical appliances Safety Particular requirements for pumps Page 333 Paragraph A2 Add the following to the list of IEC references: IEC/TR Electrical installation guide Clause 413. Explanatory notes to measures of protection against indirect contact by automatic disconnection of supply Page 335 Figure B1 Delete the figure and replace with the following: Safety services circuits (fire, evacuation and lifts) General power, lighting etc Distribution switchboard (mechanical services) Final subcircuits to pumps, chillers etc. HV/LV supply transformer by a) distributor where external to premises; or b) either distributor or customer within premises Suppy to main switchboard by a) distributor s network; or b) service line; or c) consumer mains Main switchboard Submains Distribution switchboard Submains Distribution switchboard Final subcircuits to general lighting, power and etc.

31 Page 337 Paragraph B Delete the space between 2. and 1 in the first line of the text. Page 338 Paragraph B At the end of the first paragraph of text, delete 0.9 I N and replace with 0.9 I Z. Page 338 Paragraph B4.1 At the end of Item (c) change reference to Clause Page 339 Paragraph B In both places in the clause where IEC is referenced, change this to IEC/TR In the last line of the last paragraph of the clause, before Figure B4, change reference of Lp to L p. Page 340 Figure B4 In the caption, where IEC is referenced, change this to IEC/TR Page 341 Paragraph B4.3 Delete Item 2, and replace with the following: (2) The value m is the ratio of the cross-sectional area of the phase conductor compared to the cross-sectional area of the protective earthing conductor in the circuit considered. Page 344 Paragraph B4.6 In the first line delete Clause and replace with Clause Page 346 Paragraph B5.2.2 In the first NOTE, delete reference to Paragraph B4.4 and replace with Paragraph B4.5. Page 346 Paragraph B5.2.3 In the first line of text, delete the word circuit and replace with route. Page 347 Table B1 1. In the title of the Table, delete the word CIRCUIT and replace with ROUTE. 2. In the fourth column heading, delete the word circuit and replace with route. 3. Delete the third note and replace with the following: 3. The maximum route lengths are the length of the phase conductor from the point of connection to the point of use and are related to a disconnection time of 0.4 s.

32 Page 352 Table C1 Delete the sub heading between Items G and H, and replace with the following: Load group Single domestic electrical installation or individual living unit per phase a Loading not associated with individual units connection to each phase (communal lighting, laundry loadings, lifts, motors, etc) Page 358 Paragraph C Delete the (informal) table under the heading Communal services and replace with the following: Equipment Load group Column Calculation Result Lighting H = 10.9A Socket-outlets I = 14.0A Clothes dryers J(i) = 31.3A Lifts K 5 ( ) = 44.0A + ( ) Motors L ( ) = 14.6A Total communal services loading for heaviest loaded phase = Total loading for heaviest loaded phase: = units loading + communal services loading = = A Page 361 Paragraph C Alter the second row of the list to read: W single-phase exhaust fans (permanently connected) A Page 363 Paragraph C Alter the second last row of the list to read VA two-phase spot welder (permanently connected) varying operation (Paragraph C (a)(i)) (50 A per phase primary current nameplate rating) 2. Alter the last row of the list to read VA two-phase spot welder (permanently connected) specific operation at 20% duty cycle (Paragraph C (a)(ii)) (25 A per phase primary current nameplate rating). Page 364 Paragraph C In the (informal) table under the column labelled Calculation, row beginning VA..., Groups:, reference to Paragraph C4.4.3(b) to be altered to read: Paragraph C (b).

33 Page 369 Paragraph C3.1 In the last paragraph insert a space between 25 and mm 2. Page 374 Paragraph C5.1 Amend the last paragraph to read Paragraph C5.2, together with the associated Table, provides... Page 379 Table C9 Delete the table and replace with the following:

34 TABLE C9 GUIDE TO THE MAXIMUM NUMBER OF SINGLE-CORE SHEATHED CABLES INSTALLED IN CONDUIT Cable size PVC/PVC V Heavy duty rigid UPVC conduit (NZ) (AUS) (NZ) (AUS) (NZ) (AUS) Corflo conduit Medium duty corrugated Medium duty rigid UPVC conduit >100 >100 >100 >100 >100 >100 >100 >100 >100 > >100 >100 >100 >100 >100 >100 >100 >100 >100 > >100 >100 >100 >100 >100 >100 >100 > >100 >100 > >100 >100 > >100 > >100 > > > XLPE/PVC

35 Page 380 Table C10 Delete the table and replace with the following:

36 TABLE C10 GUIDE TO THE MAXIMUM NUMBER OF TWO-CORE AND EARTH CABLES INSTALLED IN CONDUIT Cable size PVC/PVC V Heavy duty rigid UPVC conduit Corflo conduit Medium duty corrugated Medium duty rigid UPVC conduit (NZ) (AUS) (NZ) (AUS) (NZ) (AUS) PVC/PVC V PVC/PVC V90 FLAT >100 > >100 > >100 > >100 > > >

37 Page 381 Table C11 Delete the table and replace with the following:

38 TABLE C11 GUIDE TO THE MAXIMUM NUMBER OF FOUR-CORE AND EARTH CABLES INSTALLED IN CONDUIT Cable size Heavy duty rigid UPVC conduit (NZ) (AUS) (NZ) (AUS) (NZ) (AUS) Corflo conduit Medium duty corrugated Medium duty rigid UPVC conduit PVC/PVC V PVC/PVC V XLPE/PVC

39 Page 384 Paragraph D2.2 Delete the NOTE and replace with the following: NOTE: Hollow steel poles must be capped at the top to prevent water penetration. Page 385 Figure D1 Delete the figure and replace with the following: Maximum span for cable type and size (Table 3.9) 0.2 m Maximum sag (Table D2) Minimum pole/post length = minimum height above ground + Maximum sag + depth in ground m Pole/post size and strength rating (Tables D3, D5, D6 and D10 to D13) Minimum height above ground (Table 3.8) Free length to lowest conductor support (Tables D3, D5, D6 and D10 to D13) = minimum height above ground + maximum sag Depth in ground (Table D1) Pages 386 and 387 Paragraph D In the second paragraph change the measurement to 60 m. 2. In the NOTE before (a), change the measurement to m. 3. In Item (c), change the last two paragraphs to read From Steps (a), (b) and (c) plus an additional length above support of 0.20 m (see Paragraph D2.1), Minimum length of pole/post = = 6.90 m.

40 Pages 387 and 388 Paragraph D At the end of the first paragraph change S11 to S Delete Items (a) to (f) and replace with the following: (a) If a square sawn hardwood post is selected, then Table D3 shows that, for a free length to the lowest conductor of 5.2 m with a minimum strength of S18 and concreted in ground, a 175 mm 175 mm sawn hardwood post is required (this has a strength rating of S21). Then the post required is a 6.90 m 175 mm 175 mm sawn hardwood (S21). (b) If a cut round hardwood pole is selected, Tables D5 and D6 show that for a free length to the lowest conductor of 5.2 m with size reduced from the base of 8 m/2 kn pole, an S23 pole is required. For 8 m/2 kn pole with the size reduced from the top, an S24 pole is required. Note that a 2 kn pole is suitable, as Table D2 Column 6 shows that, for this example, the nominal aerial tension is 1.35 kn. Thus the pole required is either an S23, 8 m pole reduced from the base to 6.90 m or an S24, 8 m pole reduced from the top to 6.90 m. (c) If Grade 250 steel pipe is selected, Table D10 shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18, a pipe of 140 mm diameter 5.0 mm wall thickness is required. This has an S20 strength rating. Thus the post required is a 6.90 m 140 mm Ø 5.0 mm wall thickness (S20) 250 Grade steel pipe. (d) If Grade 350 steel pipe is selected, Table D11 shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18, a pipe of 140 mm diameter and 3.5 mm wall thickness is required. This has an S19 strength rating. Thus the post required is 6.90 m 140 mm Ø 3.5 mm wall thickness (S19) 350 Grade steel pipe. (e) If Grade 350 square section is selected, Table D12(b) shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18, a post of 100 mm 100 mm 9 mm wall thickness is required. This has an S20 strength rating. Thus the post required is 6.90 m 100 mm 100 mm 9.0 mm wall thickness (S20) 350 Grade steel section. (f) If Grade 450 square section is selected, Table D13(b) shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18 there is no suitable size available.