09 ELECTRICAL 0902 Electrical

Transcription

1 0902 ELECTRICAL 1 ELECTRICAL SYSTEMS 1.1 RESPONSIBILITIES Requirement: Provide the electrical services, as documented. Variations to the Scope Instructions may be issued throughout the project as a result of final design and coordination. Unless the engineer s instruction is supported with a formal instruction from the Principal, the engineer s instruction cannot be used as grounds for a Variation. Where a claim is genuine, additional costs or credits for any such variations must be submitted with a complete breakdown of costs including quantities and rates for all labour, materials and equipment. Variation Claims submitted without breakdowns will be rejected. Substitutions to the Scope Where a substitution to the specification is proposed, the contractor shall submit each substitution, incorporating technical details and a cost breakdown, to the head contractor. The substitution shall be reviewed by the consulting engineer and the client for consideration. Unless approved by the consulting engineer and the client, the substitution will not be acceptable as an equal or approved approach to the specification. Description of the Installation The following works generally describe the Electrical Services installation and shall be carried out under this specification: - Co-ordination with Electricity Supply Authority via the electricity retailer for the provision of a new direct connected revenue meter within the site main switchboard and low voltage electrical pillar on the lot boundary. - Payment of Electricity Supply Authority standard fees and charges. - Provision of new underground consumers mains, and site main switchboard including all switchgear, controlgear and auxiliary panels. - Provision of a power monitoring system including metering, instrumentation and equipment to main switchboard, distribution boards, mains, cabling, terminations and programming. - Multiple submains and distribution boards throughout the installation, including cable trays, cable ladders, supports, conduits, switchgear and controlgear, auxiliary panels and enclosures and all ancillary equipment to complete the installation. - Earthing systems to all accessories, outlets, equipment, luminaires, other services, building structure, switchboards and communications cabling systems including provision of equipotential earthing system to slab reinforcement in all wet areas in accordance with AS3000 and in coordination with the Builder. - Underground and underfloor access provisions within and between all buildings on the site including draw wires, pits, sweep bends, locks, floor ducts, cable trays and access panels. - power installation throughout including access provisions, skirting ducts, supports, cabling and outlets. - RCD protection of all socket outlet circuits, lighting circuits and other circuits and equipment as nominated. - Power supplies to Mechanical, Fire, Hydraulic and specialised services including provision of supplies, outlets or isolators as nominated. - Provision of general and specialised lighting throughout the complex including luminaires, lamps and specialist controls. - Provision and installation of a automated lighting control system where indicated on the accompanying drawings including; motion sensors, photoelectric cell and time clock devices. - Relay contactors provided to all internal lighting circuits connected to the dry contact output from the security system to disable lighting upon arming of the security system. NATSPEC (Oct 17)

2 - Exit and emergency lighting throughout the installation complying with the requirements of AS Access conduits for communications systems including those for NBN Co and internal voice and data copper, and optical fibre cables, inclusive of pits and draw wires. - Telecommunications backbone cabling including copper and optical fibre cabling, and terminations. - Telecommunications facility cabling including support systems, accessories and terminations. - New wiring and lighting support systems for electrical and communications services including Wyr- Grid, cable ladder, cable tray, uni-strut suspended support grid, threaded rod supports, fixings, ancillary pieces and other works nominated on the technical drawings. - Communication cabinet/rack power supplies including outlets. - Telecommunications racking system including furniture, cable retaining and management equipment, patch panels, outlets, and patch leads. - Electronic security system including control panel, keypads, detection devices and audio and visual alarms. - Seismic bracing of electrical installation. - Provision of all hoisting and access equipment required to install all systems. - Provision of training of management and maintenance staff for all systems. - Provision of reticulated MATV system to administration building and transitional dwellings for digital FTA distribution including the ability for high definition digital TV distribution, including backbone cabling, outlet cabling, passive and active equipment, racking, aerial installation, head-end equipment auxiliary equipment and accessories to each apartment to complete the installation. - Make timely applications and liaise with electrical and telecommunication authorities and utilities for all infrastructure and connections associated with the project on behalf of the Proprietor/Principal to meet the construction program milestones. - Testing and commissioning of the above systems. - Maintenance and servicing, defects liability and warranty for 12 months from the date of practical completion. - Bound volumes of Installation and Operating Manuals, and work-as-executed drawings 1.2 DESIGN Design for durability and maintainability Design for durability: Develop the design so the systems achieve the documented performance, reliability, service life, energy efficiency and safety requirements, and are easily maintainable. Access for maintenance: Develop the design so the systems conform to ACCESS FOR MAINTENANCE in the 0171 requirements worksection. Electrical system design : Design and provide systems, as documented. Designer qualifications: Use only appropriately experienced and qualified persons to undertake design work. If requested, provide documents verifying the qualification and experience. Design parameters: As documented. Fault protection: Automatic disconnection to AS/NZS 3000 clause 2.4. Fire-resisting protection: Provide for switchboards and associated electrical conductors to BCA C2.13. Maximum demand: Calculation method to AS/NZS 3000 Appendix C. Authority requirements: New PWC LV pillar at lot boundary. 1.3 CROSS REFERENCES Requirement: Conform to the following: requirements. 1.4 STANDARDS Comply in all respects with the requirements of the following codes and regulations applicable to the works: NATSPEC (Oct 17)

3 - Building Code of Australia - Local Power, Water & Gas Authority Regulations - Occupational Health, Welfare and Safety Regulations - Local and State Government Acts governing the works Comply in all respects with the requirements of the following Australian Standards applicable to the works (most recent revision unless previous revision is referenced in the current BCA): AS/NZS AS/NZS 1345 AS/NZS 1367 AS/NZS 1417 AS/NZS 1680 Set AS 1882 AS/NZS 1939 Set AS/NZS 2053 Set AS 2067 AS/NZS 2201 Set AS/NZS 2293 Set AS/NZS 3000 AS/NZS 3008 AS/NZS 3010 AS/NZS 3012 AS/NZS 3080 AS/NZS 3084 AS/NZS 3111 AS 3786 AS/NZS Set AS/NZS Set AS/NZS Set AS/CA S008 AS/CA S009 Structural design actions - Earthquake actions in Australia Identification of the contents of piping, conduits and ducts Coaxial cable and optical fibre systems for the RF distribution of digital television, radio and in-house analogue television signals in single and multiple dwelling installations Receiving Antennas Interior Lighting Earth and bonding clamps Degrees of protection provided by enclosure for electrical equipment (IP Code) Conduit and fittings for electrical installations set Substations and high voltage installations exceeding 1 kv a.c. Intruder alarm systems set Emergency escape lighting and exit signs for buildings Electrical Installations (known as the Australian/New Zealand Wiring Rules) Electrical Installations Selection of Cables Electrical Installations Generating Sets Electrical Installations Construction and Demolition Sites Information technology - Generic cabling for customer premises Telecommunications Pathways and Spaces Approval and test specification - Miniature overcurrent circuit-breakers Smoke alarms using scattered light, transmitted light or ionization Low-voltage switchgear and controlgear Electromagnetic Compatibility (EMC) set Low-voltage switchgear and controlgear assemblies Requirements for customer cabling products Installation requirements for customer cabling (Wiring rules) NATSPEC (Oct 17)

4 1.5 CONTRACT DOCUMENTS Requirement: Conform to the 0171 requirements worksection. 1.6 SUBMISSIONS Requirement: Conform to the 0171 requirements worksection. Certification : Submit the following: - Certification of conformance with AS/NZS 3000, for electrical services. - Telecommunications cabling: Submit product and installation certification for the installation. Samples Lighting: Submit samples of all luminaires and accessories complete with lamp, control gear and three core flex and plug. Emergency evacuation lighting: Submit samples of all luminaires and exit signs. Shop drawings Lighting: Submit shop drawings for the following: - Lighting columns. - Lighting column mounting bases. - Non-proprietary luminaires. - Non-standard fixing brackets. Telecommunications cabling: Submit the following: - Layouts of equipment racks. - Cross-connect layout. - Cabling diagram for complete system. - Cable management system. Power: Submit shop drawings for the following: - Main Switchboards and all Distribution Boards including: - plans, elevations and sections, construction and weights. - Circuit diagrams, busbar and cable sizes - Current carrying capacity, current and fault ratings - Equipment types and models, labelling and finishes - Additionally, provide documentary evidence of fault withstand type tests relevant to the applicable enclosure(s) Work-As-Executed Drawings Requirement: Before the Date of Practical Completion and as a pre-condition to Practical Completion supply work-as-executed drawings based on the Contract Drawings. Include the following minimum information: - Actual locations of installed equipment - Interface points with other trades - Circuit numbers and phase for all final sub-circuits - Actual cable tray and communication cable routes - NBN Co cable pathways and supports. - Location depths of all underground conduits and pits dimensioned from permanent landmarks Include these drawings once approved in the Electrical Services Installation Manuals. Provide a laminated copy of the main switchboard single line diagram to the approval of the Principal and Consulting Engineer; mount adjacent the Main Switchboard. Provide a laminated copy of the voice and data cabling schematic diagram and mount within the Communications Room. Provide a bound set of communication floor plans indicating labelling and wiring routes and locate within the Communications Room. NATSPEC (Oct 17)

5 Products and materials Data: Submit technical data for all items of plant and equipment, including the following: - Assumptions. - Calculations. - Model name, designation and number. - Capacity of all system elements. - Country of origin and manufacture. - Materials used in the construction. - Size, including required clearances for installation. - Certification of compliance with the applicable code or standard. - Technical data schedules corresponding to the equipment schedules in the contract documents. If there is a discrepancy between the two, substantiate the change. - Manufacturers technical literature. - Type-test reports. - Single line diagram(s), including fault levels at switchboards, cable size and type. - Switchboard layouts. Lighting: Submit technical data on the following: - Luminaires. - Lamps. - Ballasts. - Power factor correction equipment. - Lighting control systems. - All accessories. Telecommunications cabling: Submit technical data including the following: - System design parameters: Performance. - Voice and/or data transfer rate. - Cable type and characteristics. - Segregation requirements for EMI/EMR. - Maximum length of cables. - Cross-connect type and characteristics. - Cross-connect block. - Patch cords. - Fibre optic terminations. - Patch panel module. - Cable management for racks. - Rack. - Fly leads. Emergency evacuation lighting: Submit technical data for each type of luminaire and exit sign including the following: - Maximum luminaire spacing for a given mounting height. - Luminaire classification to AS INSPECTION Notice Inspection: Give notice so inspection may be made of the following: - First Fix Installation - Second Fix Installation - Completed Installation, including witnessing commissioned systems compliant with this documentation. Requirement: Conform to the 0171 requirements worksection. NATSPEC (Oct 17)

6 2 ASSOCIATED WORKS The following works related to the Electrical Services installation shall be carried out under other trade packages at the direction of the head contractor unless otherwise indicated. Coordinate all reticulation, termination locations and connection details. Ensure that information is provided to other trades to facilitate these works. Mechanical Services Sub-Contractor: - Wiring and final connection from isolators for air conditioning units and cassette units shall be provided by the Mechanical Services Contractor. - Flex and plug and final connection from controlled SSOs for toilet exhaust equipment shall be provided by the Mechanical Services Contractor. - When exhaust fans are being supplied via lighting movement sensors, the Electrical Contractor shall provide power to the fans via the 2nd pole, which will be programmed to run for an additional 10 minutes once the lighting has switched off. - Electrical contractor to provide 0-30minute adjustable run-on timer for each fan including all cabling and other equipment as required. Run-on timers to be set to 10 minutes initially. Interlock fans to operate with the lighting circuits for each room serviced by the fan such that the operation of any light switch will operate the fan. Provide double pole light switches as required. Co-ordinate exact requirements with mechanical trade prior to first fix. - Circuit breakers for all air conditioning units (commercial tenancies, apartments and townhouses) shall be provided within local distribution boards by the electrical contractor under this contract. Subcircuit cabling, weatherproof isolators and final connections to units shall be provided by the Mechanical Contractor. - For all roof mounted and indoor plant the Electrical Contractor shall provide isolators installed to pedestals located adjacent plant equipment, and labelled to reference plant equipment. No isolators shall be installed directly on plant equipment. - For all plant located within the ceiling space the Electrical Contractor shall provide isolators/socket outlets securely installed adjacent plant equipment, and labelled to reference plant equipment. No isolators/socket outlets shall be installed directly on plant equipment. Hydraulics Sub-contractor: - Wiring and final connections from socket outlets and isolators to all Hydraulic Services Equipment to be provided by the Electrical Contractor under this contact. - For all roof mounted and indoor plant the Electrical Contractor shall provide isolators installed to pedestals located adjacent plant equipment, and labelled to reference plant equipment. No isolators shall be installed directly on plant equipment. - For all plant located within the ceiling space the Electrical Contractor shall provide isolators/socket outlets securely installed adjacent plant equipment, and labelled to reference plant equipment. No isolators/socket outlets shall be installed directly on plant equipment. 3 LOW VOLTAGE POWER SYSTEMS 3.1 RESPONSIBILITIES Requirement: Provide low voltage power systems, as documented. 3.2 PERFORMANCE Network supply : Liaise with the electricity distributor and provide network connection, as documented. Program: Schedule the works and statutory inspections to suit the construction program. Prospective fault current: Determine, from the electricity distributor, the prospective fault current and fault protection requirements. Supply system: 400 V, 3-phase, 4-wire, 50 Hz, multiple earth neutral (MEN) system. NATSPEC (Oct 17)

7 Distribution system : Provide power distribution system elements, as documented. 3.3 SURGE PROTECTION DEVICES (SPD) Requirement: Provide all mode metal oxide varistor based series connected SPD to protect equipment in racks and cabinets, as documented. Standard: To AS and AS Surge rating (Imax): 200 ka (8/20 µs) phase to neutral for MSB and 50kA (8/20 µs) phase to neutral for all other distribution boards. Voltage protection level (Up): - < 600 V at 3 ka V at 500 A. Visual indicator: Provide visual indication of SPD status. Enclosure and installation: House SPD in an electrical switchboard or panel and protect with a suitable rated circuit breaker equal to or less than the load current rating of the SPD. 3.4 SITE ELECTRICITY SUPPLY Responsibilities: Provide site electricity supplies, as documented. Connect project electrical facilities to the network distributors external site electricity supply. Consumers mains Requirement: Provide consumers mains, associated services and all necessary fault and overload current protection equipment to AS/NZS 3000 Section 3, the electricity distributor s standards and the Service and Installation Rules. Protected consumers mains: Provide short circuit and overload protection, where required by the electricity distributor. Metering Retail: Provide metering to the requirements of the electricity retailer, the electricity distributor and as documented. Private: Provide private metering, as documented. Photovoltaic metering: As documented. 3.5 WIRING SYSTEMS Requirement: Provide wiring and site cable reticulation systems appropriate to the installation conditions and the function of the load. Include the following: - Underground services. - Above-ground services. - In-building services. Type: Re-wireable system. Neutral conductors: Same size as the corresponding active conductors. Rate the neutral conductor size for the maximum harmonic currents. 3.6 POWER CABLES Standards Polymeric insulated cables: To AS/NZS Aerial cables: - Copper conductors: To AS Aluminium conductors: To AS 3607 or AS Cable selection Standards: Select cables in accordance with AS/NZS 3000 and AS/NZS Ratings: Use AS/NZS for the determination of current ratings, voltage drop and cable size. - Voltage Drop: The maximum voltage drop to each final sub-circuit is not to exceed 2.5% unless specified otherwise. NATSPEC (Oct 17)

8 - Conductors: Unless otherwise specified, use multi-stranded copper conductors. Aluminium cabling will not be accepted. - Minimum Sub-Circuit size: 2.5mm2 for power and lighting circuits. - Minimum Sub-Main and Consumers Mains size: As shown on the drawings accompanying this specification. In any case, they shall be sized to the maximum circuit protection device rating on the circuit, and shall not be sized any less to those shown on the drawings. - Sub-Circuit cable types: Unless otherwise specified use cabling with V-90 (PVC) insulation and PVC sheath Fault loop impedance: Provide final subcircuit cables to satisfy the requirements for automatic disconnection under short circuit and earth fault/touch voltage conditions. Underground residential distribution (URD) systems: Cables to AS/NZS Distribution cables: To AS/NZS AS/NZS 4961 provides guidance in the specification and selection of cables used for external distribution. Colours Conductor colours: For fixed wiring cables, provide coloured conductor insulation or at least 150 mm of close fitting coloured sleeving at the termination points of each conductor. Active conductors in single phase circuits: Red. Active conductors in polyphase circuits: - A phase: Red. - B phase: White. - C phase: Blue. Sheath: White. Cable installation Classifications: To AS/NZS 3000 and Handling cables: Report damage to cable insulation, serving or sheathing. Stress: Do not use installation methods that exceed the cable s pulling tension. Use cable rollers for cable installed on tray/ladders or in underground enclosures. Straight-through joints: Unless unavoidable due to length or difficult installation conditions, run cables without intermediate straight-through joints. Cable joints: Locate in accessible positions in junction boxes and/or in pits. Individual wiring of extra-low voltage circuits: Tie together at regular intervals. Manufacturers' recommendations: Unless otherwise specified, install, terminate and joint cables in accordance with manufacturers' recommendations. Terminations: Terminate each circular multicore cable, and each single core TPS cable of greater cross section than 35mm2, using a nonferrous gland at each end of each cable. Provide non-ferrous gland plates for all single core cables. Handling cables: Handle cables so as to avoid damage to insulation and serving or sheathing. Report all damage and replace or repair damaged cable as directed. Installation: Install and adequately support fixed wiring as specified throughout the installation. For cabling routes not specified in detail, submit a proposed route layout and gain approval prior to ordering cables or support equipment. All multi-phase circuits with single conductors shall be installed in trefoil configuration, strictly in accordance with the requirements of AS All underground cables that form part of different electrical installations (such as separately metered installations) to be installed in separate conduits. Should cabling require to be painted for concealment, the cabling shall be installed within a suitably sized conduit, with only the conduit painted in the desired colour. Under no circumstances shall cabling be painted. Conduits Minimum sizes: Metallic and non-metallic conduits: 25mm. Galvanised water pipe: Medium or heavy tube to AS 1074, 25mm nominal minimum bore. NATSPEC (Oct 17)

9 Fixings: Utilise dual fixing conduit saddles. Single fixing conduit saddles are not acceptable. Maintain fire rating of all wall surfaces. Do not use explosive-powered or similar fixing equipment unless approved. To woodwork: Conduit matching saddles and round head plated steel wood screws. To masonry: Galvanised saddles and round head plated steel screws screwed into approved metallic expansion devices. Wooden plugs, explosive powered fixings and adhesive fastenings are not permitted. To steelwork: Plated steel metal-thread screws. Drill and tap the steelwork for each saddle. Support: Unless otherwise specified, fix conduit saddles at a maximum of 1 m intervals in both horizontal and vertical runs. Ensure that installed conduits are fully supported during construction. Lengths: Up to the commercially obtainable conduit lengths of run, install conduits without joints. Remove all rags, burrs, and sharp edges from each length before completing each conduit joint. Fit moulded plastic screwed bushes to the free ends of metallic conduit runs before installing the conductors. Inspection fittings: Inspection fittings and the like shall be accessible. Draw-in boxes: Provide draw-in boxes at suitable intervals not exceeding 30 m in straight runs, and at intervals not exceeding 25 m in other runs including directional changes. Underground boxes: Fit draw-in boxes installed underground with gasketted covers and seal them against entry of moisture. Cable trays and ladders Support system: Bends, connectors, trays, ladders, brackets, and other supports necessary to make a complete cable or conduit support system shall be of the same manufacture, sized to adequately support the installed cabling. : All cables greater than 50mm2 cross sectional conductor area, shall be supported via cable tray. All cable runs that require greater than 2 catenaries in a single run shall be supported via cable tray. Steel trays: Perforated pre-galvanised. Minimum steel thickness: - Trays up to 150mm wide: 1.0mm - Trays from 150mm to 300mm wide: 1.2mm - Trays over 300mm wide: 1.6mm Folded edge: Minimum height 20 mm, radiused. Slotting: Normal or reverse with no burrs or sharp edges on the side to which cables are attached. Construction: Manufacture cable ladder trays and cable ladder from two folded steel or extruded structural grade aluminium side rails with cable support rungs between the two rails spaced at intervals of not more than 300mm (ladder) and 100mm (ladder trays). Small cable: Do not run cables smaller than 13mm outside diameter on the cable ladder unless continuously supported. Cable fixing: Slots or ladder rails shall be suitable for fixing cable ties, strapping or saddles. Communications cabling shall be fixed with Velcro cable ties. Bend radius: Bends shall have a minimum inside radius of not less than twelve times the outside diameter of the largest diameter cable carried. Bends shall be manufactured by the supplier. The contractor shall not modify trays or ladders to provide bends. Spare capacity: Provide sufficient space on the tray or ladder for not less than 20% more cables or conduits than specified, irrespective of sizes indicated on the drawings. The sizes and quantities nominated on the drawings are indicative, and are to be confirmed by the Electrical Contractor based on final cable quantities, sizes and locations. Route: Cable tray routes shown on the drawings accompanying this specification are shown indicatively, and are to be confirmed by the Electrical with reference to conditions on site and the Structural Engineers drawings. In any case, cable trays shall be run parallel and perpendicular to the building structure. Access: Position the support system to give adequate access for inspecting, replacing, or adding cable. NATSPEC (Oct 17)

10 Support: Provide support brackets of the cantilever type (ie. one side of the bracket left open), cold galvanised after fabrication. Mount brackets to manufacturer's recommendations, with no appreciable sag between supports. Cable strapping: Fix cable to the support system by proprietary nylon ties, straps or saddles, at 500 mm centres for vertical runs and 1000mm centres for horizontal runs. Use nylon ties for smaller cables (up to 15mm diameter single core cables, 25mm multicore cables), non-magnetic saddles or strapping for larger cables. All data cabling shall be fixed to cable trays with Velcro cable ties. Cable protection: Provide a slightly curved support surface under cables leaving the tray or cable ladder to protect the cable sheath from impingement by the tray or ladder edge. Mechanical Protection: Where cables are installed in such a manner that they may be vulnerable to impact provide cable tray lids. Clearance: Maintain at least 200 mm clearance from hot water pipes 500 mm clearance from boilers or furnaces, and 100 mm clearance (minimum) from all other services. Segregation: Segregation from electrical, communications, security etc. cabling shall be maintained in accordance with the relevant standards. Cabling can be reticulated on the same cable trays, provided a fixed partition (barrier) is installed to the cable tray. Earthing: Earth all cable trays, ladder trays and ladders in accordance with the requirements of AS/NZS 3000 and ACMA technical standards. Catenaries Construction: Provide commercial manufactured catenaries as follows: Properly rated for the weight of the cabling to be installed. Provide uniform support throughout cable length. Be fixed at each end. Capable of withstanding any mechanical stresses within the environment installed. Consist of material equally resistant to corrosion and deterioration. 2.7mm minimum diameter. 1.5kN minimum break force. Zinc coated. Cables themselves shall not be used as catenaries. Installation: Install catenaries as follows: Provide no more than 3 groups of 5 bundles cables to each catenary. Provide hangers at 1000mm intervals. Shall be supported off the Building structure, and not off other plant and/or equipment. Installed so as to run parallel and/or perpendicular to building structure. Cable fixing: Nylon cables ties shall be provided for fixing electric cabling, and Velcro cable ties shall be provided for communications cabling at 500mm intervals. Clearance: Locate cabling 100mm from moving parts of any equipment operating at elevated temperature. Earthing: Earth all catenaries in accordance with the requirements of AS/NZS 3000 and ACMA technical standards. Tagging : Identify multicore cables and trefoil groups at each end with stamped non-ferrous tags clipped around each cable or trefoil group. Marking : Identify the origin of all wiring by legible indelible marking. Submains and final sub-circuits Installation: Provide the following: - Cables with diameter less than 13 mm: Run in conduit, cable ducts or support on cable trays or ladders. - Single core cables of 3 phase circuits of diameter greater than 13 mm: Install unenclosed single core cables laid on cable tray or support systems in trefoil (RWBN) groups. - Cables for lighting systems: Run in conduit, cable ducts, suspend on catenary systems or support on cable trays or ladders. NATSPEC (Oct 17)

11 - Accessible concealed spaces: Install thermoplastic insulated and sheathed cables. - Inaccessible concealed spaces: Install cable in PVC-U conduit. - Roof spaces: Install cable below heat insulation and sarking. If not protected from high ambient roof space temperatures by thermal insulation, derate the cables, to AS/NZS Table 27, for an assumed ambient temperature of 55 C. - Accessible ceiling voids: Support and enclose cables on ceiling surfaces or ceiling suspension systems. - Plastered or rendered masonry: Install cable in PVC-U conduit. - Double sided face brick partition: Install cable in PVC-U conduit installed within the brick wall by slotting bricks or using any pathways provided in the brick. - Stud framed walls with bulk insulation: Install cables in PVC-U conduit. - Stud framed walls without bulk insulation: Thermoplastic insulated and sheathed cables allowing rewirability. - Horizontal cable trays or ladders: Fix cables using proprietary nylon cable ties or straps, cable saddles or clips at 2000 mm intervals. - Vertical cable risers: Fix cables using proprietary nylon cable ties or straps, cable saddles or clips at 1000 mm intervals. - Plant rooms: Install cable in heavy duty PVC-U conduit or on tray or in duct. 3.7 EARTHING SYSTEMS Earthing system: The following earthing system is to be provided for each supply in accordance with AS Type: MEN system (New) - Maximum earth resistance: In accordance with AS Electrodes: Copper Clad Stainless Steel - 2.4m length. - Pits: Proprietary earthing pit (300 mm x 300 mm). Earth all metallic structure and equipment where this relates to the Electrical Services or Telecommunications installation. The location of the earth stake shall be identified at the Main Switchboard. Connections: For the connection of the main earthing conductor and interconnecting bonding use clamps to AS Additional earthing and bonding: Provide additional bonding between the earthing system and all piped services within each building, at the closest practical point to where the piped services enter the building. Include all piped services, including Hot Water, Cold Water and the like, where applicable. Provide dedicated earthing conductors to each raised floor and bond to the structure at appropriate locations. Insulate support equipment brackets to suit. Earth all cable supports including by not limited to cable trays, ladders and catenaries. Telecommunications Earthing: Provide a protective earthing system for the Communications cabling systems in accordance with ACMA regulations. Provide a dedicated 16 mm2 earth cable to each Communications Rack Enclosure, MDF or TPF. The earth cable shall be an uninterrupted link from the nearest Distribution Board. For Communications Racks the earth cable shall be terminated on an earth stud located on a face plate adjacent the enclosure between 900 and 1100 AFFL. Do not allow the earthing conductor of any rack equipment frame or any earth connection between the communications raised floor and equipment earth. Insulate support equipment brackets to suit. Showers and Bathrooms: Provide additional bonding to conductive reinforcement within a concrete floors and/or walls forming part of a shower or bathroom construction. The equipotential bonding conductor shall have a cross sectional area not less than 4mm and shall be bonded to the nearest adjacent earthing system of the electrical installation. Provide additional earth stakes where required by the Supply Authority or to achieve the earth resistance stated in AS Submains: Provide an earth wire with each group of submains sized to meet the minimum requirements outlined in AS/NZS Final subcircuits: Provide a separate earth wire to each final subcircuit. Within each respective switchboard connect each earth wire to an earth bar. Ensure that earth bar numbers correspond with circuit breaker and neutral bar numbers. NATSPEC (Oct 17)

12 3.8 ELECTRICAL ACCESSORIES Style: Provide accessories of the same style and from the same manufacturer, as documented. Socket outlets - generally Standards: - : To AS/NZS Industrial: To AS/NZS Socket outlet properties: Provide sockets conforming to the following or as documented: - Type: Integral switched socket outlet. - Material: High impact plastic. - Size: Standard single gang. - Current rating: 10 A. - Pin arrangement: Mount outlets with the earth pins at the 6 o clock position. Plastic switched socket outlets Colour: White electrical. Mounting configuration: Horizontal. Ironclad socket outlets Type: Integral switched socket outlet. Material: Diecast metal or cast iron. Colour: Grey. Weatherproof socket outlets Colour: Grey. Combined RCD switched socket outlets Type: Integral RCD unit with double switched socket outlet. Colour: White electrical. RCD trip current: Conform to the following: - light and power: 30 ma Type II to AS/NZS Patient treatment areas: 10 ma Type I to AS/NZS 3190, as documented. Multi-switch socket outlets on grid mounted panels Type: Separate switch and socket outlets grid mounted on propriety or custom designed panels. Material: As documented. Colour: As documented. Panel finishes: As documented. Plugs 230 volt Requirement: Insulated type to AS/NZS 3112 with integral pins. 230 volt combination switch and permanently connected cord outlet Type: Three terminal flush mounted switch and flex-lock insert assembly. Colour: White electrical. Neon Indicator: Provide neon indicator to match existing. Flex-lock assembly: Match and securely grip the size and type of flexible cable used. Mounting configuration: Horizontal. Permanently connected equipment : Provide final subcircuit to permanently connected equipment, as documented. Isolating switch: Locate adjacent to equipment. Mounting: - Internal installations: Flush mount. - External installations: Weatherproof surface mounted. Coordination: Coordinate with equipment supplier. Wall/ceiling mounted equipment: Conceal final cable connection to equipment. NATSPEC (Oct 17)

13 Isolating switches Standard: To AS/NZS Emergency stop switches Standard: To AS/NZS IEC Type: Mushroom head with latch and twist releaser. 3-phase outlets Standard: To AS/NZS Type: Surface mounted Integral switched socket outlet with flap lid on the outlet. Material: High impact plastic. IP rating: IP56. Size: To suit current rating and pin configuration nominated in the project documents. Colour: Grey. Current rating: 5 pin, 20 A, 400 V a.c. Switch mechanism: Rotating type. Pin arrangement: Five round pins mounted with earth pins at the 6 o clock position, neutral pins in the centre and the red, white and blue phases in a clockwise sequence when viewed from the front of the outlet. Plug: Provide a matching plug top for each outlet. Installation : Install accessories and conceal cabling in walls in conformance with the following: - Rendered masonry partition: Flush wall box, with conduit chased into wall. - Double sided face brick partition: Vertically mounted flush wall box, with conduit concealed in cut bricks. - Face brick external cavity wall: Flush wall box, with thermoplastic insulated cables in conduit run in cavity and tied against inner brick surface, or thermoplastic sheathed cables run in cavity. - Stud partition: Flush plate secured to proprietary support bracket or wall box. - Fire walls: Flush wall box, with conduit built into wall. Provide additional fire protection around wall boxes, where necessary to maintain fire-resistance rating. Location: Confirm final location of all outlets and equipment on site, before installation. Spacing from adjacent horizontal surface: 75 mm to the centre of accessory socket. Default mounting heights to centre of accessory plate: - Outlets: 300 mm. - Switches and controls: 1100 mm. Accessories: Flush mounted, except in plant rooms. Common face plates: Mount adjacent flush mounted accessories under a common faceplate. Restricted location: Do not install wall boxes across junctions of wall finishes. Surface mounting: Proprietary mounting blocks. Installation of ceiling mounted accessories Connections for appliances: Flush mounted outlets on the ceiling next to support brackets. Mounting: Mount appliances independent of ceiling tiles and suspended ceiling suspension system. Fix directly to concrete slab or to roof structure above ceiling. Connections for fixed equipment: Provide concealed permanent connections. Fixing: For equipment and appliances heavier than 30 kg, provide support through the suspended ceiling to the building structure. Brace appliances that have excessive bending moments, are heavy or vibrate, to prevent horizontal movement, e.g. operating theatre shadowless lights. 4 SWITCHBOARDS PROPRIETARY 4.1 RESPONSIBILITIES Requirement: Provide proprietary switchboards for the following, as documented: - Main switchboard. NATSPEC (Oct 17)

14 - Distribution boards. 4.2 STANDARDS Standards: To AS/NZS 3000, and AS/NZS or AS/NZS PRODUCTS Switchboard connectors Type: Front connected. Enclosure Default material: Metallic-coated sheet steel. Separation Default: Form 1. Metering Retail: Provide metering to the requirements of the electricity retailer, the electricity distributor and as documented. Private: Provide private metering, as documented. Photovoltaic metering: As documented. Main switchboard main switches Spare capacity: Provide at least 25% spare capacity in the ratings main switch/isolators. Busbars : Incorporate proprietary insulated busbar systems for the interconnection of isolators, circuit breakers and other circuit protective devices. Busbar fault rating: Rated to meet the prospective fault current for 1 second or a minimum rating of 18kA/second, whichever is the greater. Spare capacity Default spare poles: 20%. Main switchboard incoming busbar: 25%. Earthing : Make provision for the connection of the communications earth terminal (CET) at switchboard earth bar to AS/CA S009. Doors : Provide lockable doors with a circuit card holder unless enclosed in cupboards or in an area which is not readily accessible to the public. IP rating Default rating: IP42 minimum. Weatherproof: IP56 minimum. Finishes External and interior: To the manufacturer s standard colour. Supporting structure Assemblies: - Wall mounted: 2 m 2. - Floor mounted: > 2 m 2. Ventilation : Required to maintain design operating temperatures at full load. Cable entries : Neatly adapt one or more cable entry plates, if fitted, to accept incoming cable enclosure. Provide the minimum number of entry plates to leave spare capacity for future cable entries. Do not run cables into the top of weatherproof assemblies. Single core cables: Pass separately through non-ferrous gland plates. Do not provide ferrous metal saddles. Cable enclosures Requirement: Continue cable enclosures to or into assemblies and fit cable entry plates so that the IP rating of the assembly and the fire-resistance level of the cable are maintained. NATSPEC (Oct 17)

15 Cable supports Requirement: Support or tie mains and submains cables within 200 mm of terminations. Provide cable supports suitable for stresses resulting from short circuit conditions. 5 SWITCHBOARD COMPONENTS 5.1 RESPONSIBILITIES Requirement: Provide switchboard components, as documented. 5.2 DESIGN Statutory authority s equipment : Liaise with the electricity distributor about the installation and coordinate with their protective and control equipment. 5.3 REQUIREMENTS Selection: To AS/NZS 3000 clause 1.7 and Section 2. Rated duty: Uninterrupted. Rated making capacity (peak): 2.1 x fault level (r.m.s.) at assembly incoming terminals. Utilization category: To AS/NZS IEC clause 4.4 and the recommendations of Annex A. - Circuits consisting of motors or other highly inductive loads: At least AC Other circuits: At least AC-22. Coordination: Select and adjust protective devices to discriminate under overload, fault current, and earth fault conditions. Enclosure: IP4X minimum. 5.4 SWITCH-ISOLATOR AND COMBINATION FUSE-SWITCH UNITS Standard: To AS/NZS IEC and AS/NZS IEC Operation: Independent manual operation including positive ON/OFF indicator. Shrouding: Effective over range of switch positions. Fault make/fault break switch-isolators Rated breaking capacity: To AS/NZS IEC Table 3. Rated short-time withstand current: As defined in AS/NZS IEC clause and the manufacturer's recommendation for the prospective fault current conditions. Rated short-circuit making capacity: As defined in AS/NZS IEC clause , to conform to the manufacturer s recommendation for the prospective fault current conditions. Rated short-circuit breaking capacity: To AS/NZS IEC clause and the manufacturer s recommendation for the prospective fault current conditions. Load make/load break switch-isolators Rated making and breaking capacity: As defined in AS/NZS IEC clause to conform to AS/NZS IEC Table 3 and the manufacturer's recommendations for the prospective fault current conditions. Rated short-time withstand current: As defined in AS/NZS IEC clause 4.3.5, to conform to the manufacturer s recommendation for the current conditions. 5.5 OVERLOAD AND FAULT PROTECTION GENERALLY Requirement: Provide overload and fault protection devices, including full discrimination and cascade protection, and grade with the electricity distributor s incoming supply protection system and the downstream site protection devices. NATSPEC (Oct 17)

16 5.6 FUSE SWITCH UNITS Fuse links Requirement: Isolate when switch contacts are open. Provide 3 phase sets of high rupturing capacity (HRC) fuse links. 5.7 MOULDED CASE AND MINIATURE CIRCUIT BREAKERS Moulded case breakers: To AS/NZS IEC and AS/NZS IEC Miniature circuit breakers: Interrupting capacity classification to AS/NZS or AS/NZS For general building services: Type C. - For motor protection: Type D. Operation: Independent manual operation including positive ON/OFF indicator. Trip type: Conform to the following: - Moulded case breakers: Adjustable electronic. - Miniature circuit breakers: Fixed thermal and fixed magnetic. Mounting: Mount circuit breakers so that the ON/OFF and current rating indications are clearly visible with covers or escutcheons in position. Align operating toggles of each circuit breaker in the same plane. Clip tray chassis: For miniature overcurrent circuit breakers, provide clip tray assemblies capable of accepting single, double or triple circuit breakers and related busbars. Provide moulded clip-on pole fillers for unused portions. Trip settings: Set as documented, seal, and label. Interchangeable trip units: Connect trip units so that trip units are not live when circuit breaker contacts are open. Fault current limiting circuit breakers: Select breaker frame sizes from one manufacturer s tested range of breakers to give cascade and discrimination protection within the switchboard and downstream switchboards as required. 5.8 ELECTRICITY DISTRIBUTOR S SERVICE PROTECTIVE DEVICES Low voltage service protective devices: To AS/NZS 3000, the electricity distributor s requirements and the Service and Installation Rules. Service protective devices > 100 A: Provide fault current limiting circuit breakers with adjustable overload and short circuit current facilities with full discrimination and cascade protection between the incoming supply protection systems and the downstream protection systems. 5.9 RESIDUAL CURRENT OPERATED CIRCUIT BREAKERS (RCBO) Standard: To AS/NZS Integral non-overload protection type: To AS/NZS Integral overload protection type: To AS/NZS Modular type: To AS/NZS IEC Type II.. Default tripping current: 30 ma FUSES WITH ENCLOSED FUSE LINKS Standards: To IEC Fuses with fuse links for the protection of semiconductor devices: To IEC Fuses with fuse links used as fault current limiters: Coordinate fuse type and rating with the protection switchgear manufacturer s recommendation if used downstream of the fault current limiters. Provide labels adjacent to the fuse holder stating FAULT CURRENT LIMITER and fuse size. Fuse links: Enclosed, high rupturing capacity type mounted in a fuse carrier. Breaking range and utilisation category: - Distribution/general purpose: gg. NATSPEC (Oct 17)

17 - Motors: gm CONTACTORS Standard: To AS/NZS IEC Type: Enclosed, block type, air break, electromagnetic. Poles: 3. Rated operational current: The greater of: - Full load current of the load controlled A. Mechanical durability: 10 million cycles to AS/NZS IEC Electric durability: 1 million operations at AC-22 to AS/NZS IEC Mounting: Mount with sufficient clearance to allow full access for maintenance, removal and replacement of coils and contacts, without the need to disconnect wiring or remove other equipment. Auxiliary contacts: Provide auxiliary contacts with at least one normally-open and one normally-closed separate contacts with rating of 6 A at 230 V a.c., utilization category AC-1. 6 LIGHTING 6.1 RESPONSIBILITIES Requirement: Provide lighting and control systems, as documented. 6.2 STANDARDS AS 2293: Emergency escape lighting and exit signs for buildings AS :- System design, installation and operation AS/NZS : - Inspection and maintenance AS : - Emergency escape luminaires and exit signs AS/NZS 60269: Low-voltage fuses AS/NZS :- requirements AS/NZS Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) AS/NZS Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) Section I to VI: Example of types of standardized fuses AS/NZS 61048: Auxiliaries for lamps Capacitors for use in tubular fluorescent and other discharge lamp circuits safety requirements 6.3 PROPRIETARY LUMINAIRES Requirement: Provide proprietary luminaires complete with lamps, luminaire control equipment, lighting control equipment, and accessories as documented. Provide lamps of the same type from the same brand and country of manufacture. Self-ballasted lamps: To AS/NZS and AS/NZS LIGHT-EMITTING DIODES (LEDS) LUMINAIRES The luminaire must be supported by an LM-79 photometric test from a certified test laboratory. The operating Tc temperature of the LED board and control gear must be tested in accordance to AS/NZS The lumen maintenance life projection must be provided for the luminaire, not just the LED board. The colour rendering of the LED must be Ra80 or greater. The LED must have an initial McAdams ellipse rating of 4 McAdams SDCM s or lower. The luminaire must conform to Australian Standards: NATSPEC (Oct 17)

18 - AS/NZS Luminaires Part 1: requirements and tests. - AS/NZS CISPR 15:201 1 Limits and methods of measurement of radio disturbance characteristics of electrical lighting. - IEC/PAS Luminaire performance Part 2-1: Particular requirements for LED luminaires. The luminaire's control gear must have a Certificate of Approval for prescribed items (in the case of remote drivers) or a Certificate of Suitability 6.5 CONTROL GEAR ENCLOSURE Requirement: Provide controlgear support enclosure within the body of the luminaire, except where remotely mounted controlgear is documented or required by the manufacturer. Enclosures and controlgear mounting assemblies: Provide heat dissipation facilities to dissipate heat from the luminaire. Controlgear enclosure: Form a barrier against direct contact with live parts of the controlgear and the area of the luminaire containing the lamp and lamp support holders. Separate controlgear enclosures: lf separate controlgear enclosures external to the luminaire are required, conform to the above requirements. Fixing: Screw fixed. 6.6 WIRING External flexible cords Recessed luminaires: Provide flexible cord in conformance with the following: - Length: 1.5 m. - Cross sectional area: 0.75 mm 2. - Type: 3-core V75 (minimum) PVC/PVC, connected to a 10 A 3-pin moulded plug to AS/NZS 3112 or multi-pin plug, as documented. 6.7 LIGHTING CONTROL Requirement: Provide the following as documented: - Lighting switches. - Dimmers. - Automatic control systems. Digital control system : Provide a proprietary, microprocessor-based system to control lighting under automatic and user interface control, as documented. 6.8 SUPPORTS Requirement: Install luminaires on proprietary supports by means of battens, trims, noggings, roses and packing material. Suspended luminaires Rods: Steel pipe suspension rods fitted with gimbal joints. Chains: Electroplated welded link chain. Levelling wire: Stainless steel. Levelling: Adjust the suspension system length so that the lighting system is level and even. Horizontal tolerance: ± 3 mm between luminaires within the same area. Surface mounted luminaires : Fit packing pieces to level luminaires and prevent distortion of luminaire bodies. Provide packing strips to align end to end luminaires. Fixing: Conform to the following: - ly: Provide 2 fixings at each end of fluorescent luminaires. - Luminaires less than 150 mm: A single fixing at each end in conjunction with 1.6 mm backing plates may be used. - Provide battens and support for the fitting. NATSPEC (Oct 17)