ELECTRICAL INFRASTRUCTURE ASSESSMENT REPORT - Altair Apartments

ELECTRICAL INFRASTRUCTUREASSESSMENT REPORT3 Kings Cross Road, Rushcutters BayPREPARED BYNorthrop Consulting EngineersACN 064 775 088Level 1 60 Hickson RoadSYDNEY NSW 2000PREPARED FORFrancis Management BuildingServices Pty Ltd9/3 Crick AvenuePOTTS POINT NSW 2011Tel: 02 9241 4188Fax: 02 9241 4324Tel: (02) 9331 8605Fax: (02) 9357 4298Ref: S120517

Activity ryYM11.01.13BPreliminary - RevisedMGS120517 – 3 Kings Cross Road, Rushcutters BayElectrical Services Due Diligence ReportPage i11/01/2013

INDEX1.Introduction . 11.12.ELECTRICAL SERVICES . 22.13.General. 1Incoming Power Supply . 22.1.1Capacity . 22.1.2Electronic Monitoring . 22.1.3Main Switchboard . 22.1.4Key Observations . 22.1.5Future Load Considerations. 3AIR CONDITIONING STUDY . 43.1.1Air-conditioning Requirements – 136 apartments . 43.1.2Required upgrades . 43.2Preliminary Budget Estimate. 63.2.1Exclusions . 6APPENDIX A . 7S120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage ii11/01/2013

1. INTRODUCTION1.1GeneralNorthrop Consulting Engineers (NCE) has been engaged to prepare a report to assess the existingelectrical infrastructure at 3 Kings Road, Rushcutters Bay.An inspection by NCE engineers with the guidance of the building managers was conducted on the1st of November 2012. A walk through a typical apartment and a visual inspection of the electricalmain switchboard was completed.As part of NCE’s scope of works, it was critical to monitor the incoming electrical supply for aperiod of 1 week to ascertain the electrical peak load profiles.S120517 – 3 Kings Cross Road, Rushcutters BayElectrical Services Due Diligence ReportPage 111/01/2013

2. ELECTRICAL SERVICES2.12.1.1Incoming Power SupplyCapacityElectrical supply for the building originates from an existing Ausgrid pad-mount kiosk substationlocated adjacent to this building. A dedicated service main has been installed from this substationto feed the main switchboard (7 x 1 core 240 mm ² XLPE/PVC cables). This cable is rated atapproximately 400 Amps at a maximum of 95 meters and confirms that we only have 400 Ampsavailable at the substation to feed this building.2.1.2Electronic MonitoringWe arranged for an electronic monitoring device to be connected to the incoming supply for aperiod of 1 week to record the peak loads. Refer to the end of the document for the relevant data.From the data recorded the building peaks at a maximum of 320 Amps per phase allowingapproximately 80 Amps spare capacity.2.1.3Main SwitchboardThe existing main switchboard is located in the car park level; the switchboard does not complywith the latest authority standards but complies with the standards of the era it was built in. Thereis limited spare space and capacity in the room to expand the main switchboard to accommodatethe potential new submains requirements to feed the residential units on the upper levels.2.1.4 Key ObservationsThe existing available supply to the site is 400A per phaseThe recorded data shows the building’s peak load at 320A per phaseTherefore, 80A per phase spare capacity is available.S120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage 211/01/2013

2.1.5Future Load ConsiderationsUpon assessment of the existing electrical infrastructure it is evident that there is limited supplyavailable to the site and that the spare capacity available would not adequately sustain any largescale installation.Possible installations include: Lift upgrades Air ConditioningSection 3 includes an air conditioning study to provide an electrical load estimate, should thebuilding be air conditioned in the future.S120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage 311/01/2013

3. AIR CONDITIONING STUDY3.1.1Air-conditioning Requirements – 136 apartmentsThe expected cooling load per apartment is based on 130 W/m². Energy consumption for totalbuilding load based on an equipment coefficient of performance of 3.0 and by selection of splitsystem air conditioning systems. Actual cooling capacity shown below is based on selected airconditioning systems.Selected units based on Daikin Super Multi NX catalogue – Multi Split Type A/C E series with DCinverter and Swing Compressor with Heat Pump.The indoor fan coil units range from smaller Daikin Model# FLXS25BVMA with a capacity of 2.5kWto larger Model# FLXS71BVMA with a cooling capacity of 7.1kW.Smaller apartments based on Daikin Model# 3MXS68EVMA outdoor condensing units. Largerapartments based on Daikin Model# 4MXS80EVMA outdoor condensing units.EstimatedCooling LoadActual CoolingCapacity(Unit Selection)(kW)Power Required(Unit Selection)(kW)PowerConsumption Unitswith COP 15Areas(700 Total Amps)(kW)(645 Total Amps)Average COP 3.475COP – Coefficient of PerformanceAn additional 525 amps per phase would be required. Please note that this electrical demandvalue has a diversity factor applied to it in accordance with AS3000.3.1.2Required upgrades New Services mains New Main switchboard New submains to supplement existingS120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage 411/01/2013

Builders works to reticulate new cabling etc New Sub circuits to balconies or roof where ever the condenser units are located New penetrations in the existing slabs Drainage of the condenser units Cutting holes in the apartments to feed power Upgrading submains to the apartments.S120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage 511/01/2013

3.2Air Conditioning Study - Preliminary Budget EstimateThe below is a high level budget estimate for the works required.ItemDescriptionAmount1.New Services mains 100,000.002.New Main switchboard 50,000.003.New submains to supplement existing 150,000.004.Builders works to reticulate new cabling etc 100,000.00 pc sumNew Sub circuits to balconies or roof whereever the condenser units are located 2,000.00 per apartment5.6.New penetrations in the existing slabs 30,000.00Drainage of the condenser units 12,000.007.8.Cutting holes in the apartments to feed power 2,500.00 per apartmentUpgrading submains to the apartments 5,000.00 per apartmentUpgrading 1 bedroom apartments– Airconditioning and heating 8,500.00 per apartmentUpgrading 2 bedroom apartments – Airconditioning and heating 14,500.00 per apartmentUpgrading 3 bedroom apartments – Airconditioning and heating 19,500.00 per apartment9.10.11.12.3.2.1Exclusions The budget is high level and is to be used as a guide only. Builders work and work by other trades. The application for connection into Ausgrid is yet to be actioned by Ausgrid.S120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage 611/01/2013

APPENDIX AElectrical Load ProfilesS120517 – 3 Kings Cross Road, Rushcutters BayElectrical & Mechanical Services ReportPage 711/01/2013

Electrical Services Due Diligence Report 11/01/2013 1. INTRODUCTION 1.1 General Northrop Consulting Engineers (NCE) has been engaged to prepare a report to assess the existing electrical infrastructure at 3 Kings Road, Rushcutters Bay. An inspection by NCE engineers with the guidance of the building managers was conducted on the