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AS/NZS 3012-2010 pdf free download

AS/NZS 3012-2010 pdf free download.Electrical installations-Construction and demolition sites.
NOTE: This provision alloss for construction or demolition work in existing premises that involves the use of plug-in equipment. such as tools and task lighting, to be carried out using existing socket-outlets that are in the vicinity of the construction work. When the construction work is more significant in terms of duration, scale or equipment, arrangements should be made to have construction wiring and equipment installed that conforms to the requirements of this Standard. Ekciricul t’quipmenl suppIid by low-rollage generalor.s
LV generators complying with the principles of AS 2790 shall be connected in accordance with AS/NZS 3010 and as follows:
NOTE: LV is any voltage exceeding 50 V a.c. or 120 V d.c. but not exceeding 1000 V a.c. or 1500 V d.c. For example, welding generators with auxiliary circuits supplying 115 V a.c. that do not originate from an isolated winding is required to be RCD protected as per Clause
(a) Where a site ssitchboard is supplied directly by a generator all sub-mains and final sub-circuits originating at that sx4itchboard shall be protected in accordance sith Clauses 2.4.5 and as illustrated in Figure 2.1.
(b) Isolated winding generators, connected in accordance with Figure 2.2. shall only be used on construction and demolition sites to supply a separated circuit for electrical equipment, installed in accordance with the electrical separation requirements of AS/NZS 3000. Each winding shall supply not more than one item of Class I (earthed conductive parts) electrical equipment.
I One or more items of Class 11 (double insulated) electrical equipment may be connected to an isolated winding generator.
2 Portable RCDs will not operate as there is no neutral to earth connection upstream of the
3 In some jurisdictions, the use of isolated winding generators is not permitted on construction and demolition sites.
4 The 2 pole switching shown in Figure 2.2 is required as both conductors are considered to be live—neither is earthed in normal operation.
5 The connection of the generating set bonding system to the general mass of earth through an earth electrode is not required or recommended as there is double insulation from the live parts to the frame.
6 Only one Class I item (one is based on probability) is allowed as the first fault from a live part to earth makes it a non-isolated system.
(c) (icnerators providing electrical supply via permanently connected RCDs with maximum rated residual current of 30 mA. operating in all live (active and neutral) conductors, and connected as per Figure 2.3, may be used to supply multiple items of equipment.AS/NZS 3012-2010 pdf free download.

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