Working level
Ngā whakaaro o muri i tētahi mahi tūturu: maximum demand, loop impedance me ngā tūtohi kōwhiri taura.
- 4 meneti te pānuiAS/NZS 3008.1.1:2025: what the AU part coversWhat AS/NZS 3008.1.1:2025 covers, a.c. to 0.6/1 kV and d.c. to 1500 V at 40 °C air and 25 °C soil, how its sections run, and where the d.c. tables are.
- 5 meneti te pānuiBattery classes and arc flash in AS/NZS 5139How AS/NZS 5139 classes a battery system by hazard and decisive voltage class, works its arc flash energy, and sets the PPE, consequence and home limits.
- 4 meneti te pānuiCable tray fill: one layer, tiers and groupingHow cables lie on a tray or ladder for AS/NZS 3008.1, touching or spaced, when a run needs another tier, and why there is no fill percentage to work to.
- 5 meneti te pānuiChecking an existing circuitThe five checks AmpSize runs on an installed circuit, from Iz and voltage drop to Zs and fault withstand, and what a site test adds that a calculation cannot.
- 4 meneti te pānuiChoosing a comms cable: length and screenCheck a comms cable run before you order it. Length limits for RS-485 and Ethernet, the 4-20 mA loop and the screen rule, with three worked runs.
- 6 meneti te pānuiConstruction site supplies: AS/NZS 3012What AS/NZS 3012:2019 asks of the electrical supply on a construction or demolition site, from the supply and the RCDs to cords, generators and testing.
- 4 meneti te pānuiControl panels and PLC wiringSegregation of LV and ELV in a control panel, terminal and numbering practice, panel earthing, and the 24 V DC voltage drop that long instrument loops fail on.
- 5 meneti te pānuiCorrection factors in the 2017 and 2025 editionsWhat each AS/NZS 3008 correction factor does, how the factors multiply, and which values changed when AS/NZS 3008.1.1:2025 replaced the 2017 tables.
- 5 meneti te pānuiDamp situations: the Section 6 zonesHow AS/NZS 3000 Section 6 zones the space around baths, showers, basins, spas, pools, fountains and saunas, how to read an IP code, and what A2 changed.
- 5 meneti te pānuiDC voltage drop and conductor resistanceWhy d.c. drop is 2 × I × R × L, why it has no reactance or power factor, and how the hot resistance, the cable tables, the limit and parallel cables change it.
- 3 meneti te pānuiEarthing an outbuilding: earth or its own MENWhen a shed or sleep-out takes an earth with its submain and when it may have its own MEN link and electrode, the PEN size, and the electrode depths to use.
- 5 meneti te pānuiGenerator sizing for motor startingWhy a motor's start, not its running load, often sets a generator's size. Running and starting kVA, voltage dip, starting methods and derating.
- 3 meneti te pānuiIB ≤ IN ≤ IZ: the overload rule on a 32 A circuitThe overload rule is IB ≤ IN ≤ IZ. A grouped 32 A circuit fails on 6 mm² and passes on 10 mm², with an IZ of 37.6 A. Why the order matters.
- 4 meneti te pānuiIEC 60364 and the Wiring RulesIEC 60364 is the international series that AS/NZS 3000 stays aligned with. See how its parts are numbered, what TN-C-S, TT and IT mean, and where MEN fits.
- 4 meneti te pānuiLighting layout and the lumen methodHow many luminaires does a room need? The lumen method from target lux to a grid, worked on an 8 m by 6 m office, with the checks the tool applies.
- 5 meneti te pānuiLoop impedance and disconnection timeZe, R1+R2, Zs and Ia, and the two disconnection times, worked on a 32 A curve C circuit over 30 m that returns 0.79 Ω against a 0.96 Ω limit.
- 4 meneti te pānuiMaximum demand and diversityWhy consumer mains are smaller than the sum of the loads. The four methods of Cl 2.2.2, the Table C1 groups, and a house that lands on 70.18 A.
- 4 meneti te pānuiMotor circuits and startingHow full load current sizes the cable and starting current sizes the device on a motor circuit, with a worked 22 kW 400 V motor and the cable the tool selects.
- 4 meneti te pānuiMotor starters, contactors and overload relaysHow to choose a motor starter: locked-rotor current, star-delta, soft starters, AC-3 and AC-23 duty, the overload relay and when motor protection applies.
- 3 meneti te pānuiMotor starting methods: current and torqueWhy a cage motor draws six or seven times full load current at start, and how star-delta, an autotransformer, a soft starter and a drive trade it for torque.
- 4 meneti te pānuiObtrusive light and the 4282 zonesHow AS/NZS 4282 limits spill light from outdoor lighting at a neighbour's window, by environmental zone A0 to A4, curfew, intensity and upward light ratio.
- 4 meneti te pānuiPower factor and reactive powerWhat power factor is, why a low one costs current and capacity, how a capacitor bank corrects it in steps, and when harmonics call for a detuned bank.
- 4 meneti te pānuiPV and inverter basicsHow a grid-connected PV system connects to an installation, why voltage rise sets the inverter cable, and which standards the AmpSize tools cannot quote.
- 4 meneti te pānuiPV array isolators and earthingHow parallel strings feed a fault, what Ithe, Ie and make and break mean for a d.c. isolator, and how AS/NZS 5033 earths and alarms a PV array.
- 3 meneti te pānuiPV string voltage and temperatureWhy a PV string's voltage rises in the cold and falls in the heat, how AS/NZS 5033 limits it, and how the string current, fuses and isolator follow.
- 4 meneti te pānuiRCD leakage and nuisance trippingWhy an RCD trips with no fault. Where standing leakage comes from, the one-third and one-half points of Cl 2.6.2.1, class limits against measured figures.
- 5 meneti te pānuiRCD types and where they are requiredType AC, A, F and B, what each one detects, and the clauses that place them. The fault path behind them, worked on a 20 A circuit over 25 m.
- 4 meneti te pānuiShort-circuit withstand and the k factorThe adiabatic check in plain terms: prospective fault current, clearing time and k, worked on 25 mm² copper XLPE at 10 kA for 0.1 s.
- 4 meneti te pānuiTesting to Section 8: what each test provesThe Section 8 test sequence, what each test shows, and how a calculated earth fault loop impedance compares with the value a tester reads on site.
- 4 meneti te pānuiUnderground cables and civil interfacesBurial categories, depth of cover, bedding and separation for underground cables, with a worked 100 A submain that changes size when the trench changes.
Ngā tātaitai e whakamahia ana e ēnei aratohu
- Tātaitai rahi tauraKimihia te rahi taura iti rawa e pass ana i ia arotake.
- Tātaitai rahi taura DCWhakaritea te rahi o tētahi taura d.c. tae atu ki te 1500 V mō te iahiko me te heke voltage.
- Arc flash me te karaehe pākahikoDVC pākahiko, karaehe mōrearea, pūngao arc flash me te taumata PPE.
- Tātaitai pākahiko solarWhakaritea te rahi o tētahi pākahiko kāinga mō te uta ahiahi solar.
- Tātaitai Arc FlashTātaungia te pūngao o tētahi arc flash me tōna karaehe PPE.
- Whakakī cable tray me te ladderTe whānui o te tray, te ladder, ngā tiers, kg/m me te tauwehe whakarōpū.
- Tātaitai correction factorPānuitia ia tauwehe whakatika me te reiti e hiahiatia ana e tētahi taura.
- Arotake ara iahiko o nāianeiTirohia tētahi ara iahiko kua whakatūria: te taura, te taputapu, te heke me te Zs.
- Tātaitai earth fault loop impedanceTirohia te earth fault loop impedance ki te Zs nui rawa.
- Kōwhiri taura commsKōwhiria tētahi taura comms, ā, tirohia te roa o te ara.
- Loop power budget mō ngā loop 4–20 mATirohia te voltage e toe ana i te transmitter mai i tētahi loop 4–20 mA.
- Tātaitai Puna Hiko Wāhi HangaNgā ture puna hiko, RCD me te whakamātautau mō tētahi wāhi hanga.
- Tātaitai roa taura ngāwari i te wāhi hangaTe roa rawa o te taura ngāwari, o te taura rānei ka taea te rere i tētahi wāhi hanga.
- Ngā wā Test and TagNgā wā whakamātau anō me ngā rohe pass mō ngā taputapu kawe.
- Puna hiko mō ngā taputapu ā-ringaPānuitia ngā whakaritenga puna e rārangi ana ngā reg 88 ki 89A.
- Kaitirotiro show and carnival wiringNgā arotake RCD waea whakaaturanga, me te hōhonu me te teitei o ngā waea wāhi.
- Tātaitai heke voltageTātaitia te heke voltage i tētahi ara taura, ā, tirohia te rohe.
- Tātaitai battery bankTātaitia te kaha battery bank me te autonomy mō tētahi uta.
- Tātaitai Iahiko Uta KatoaTātaitia te iahiko uta katoa mai i te mana, te voltage me te wāhanga.
- Kōwhiri whakawhenua screen tauraKimihia ngā wāhi hei whakawhenua i tētahi screen, waea drain, armour rānei.
- Arotake Wet Area ZonesKimihia te rohe Section 6, te IP me te RCD tata ki te wai.
- Tātaitai kōwhiri RCDTirohia mēnā e hiahiatia ana he RCD, ā, whakamātauria te wā tuku.
- Whakawhenua whare o wahoWhakawhenuatia he whare iti: he whenua me te submain, he MEN motuhake rānei.
- Tātaitai whakawhenua me te bondingWhakaritea te rahi o ngā kaikawe whakawhenua, whakawhenua matua me ngā kaikawe bonding.
- Rahi generator mai i tētahi Rārangi UtaWhakaritea te rahi o tētahi generator mai i tētahi rārangi uta me te tīmatanga mōtā.
- Tātaitai iahiko generatorTe iahiko uta katoa me te iahiko hapa o tētahi generator mai i tōna kVA.
- Tātaitai mōtāKimihia te iahiko uta katoa mōtā, te iahiko tīmata me te torque.
- Tātaitai fault rating tauraTirohia mēnā ka ū tētahi kaikawe ki te iahiko hapa.
- Tātaitai Maximum DemandTātaungia te maximum demand mō ngā uta kāinga, uta kāore kāinga rānei.
- Tātaitai lumen method mō te ramaTe tatau luminaire me te kōrero mō tētahi rūma mā te lumen method.
- Tātaitai Power Wāhanga ToruHurihia i waenga i te power, te iahiko, te voltage me te power factor.
- Tātaitai ara iahiko mōtāTaura, breaker, contactor me te overload mō tētahi mōtā.
- Whakataurite tikanga tīmatanga mōtāWhakatairitea ngā tīmatanga DOL, star-delta, soft start me te drive.
- Arotake Obtrusive LightTirohia te rama o waho i tētahi matapihi rohe e ai ki AS/NZS 4282.
- Tātaitai power factor correctionKimihia te kvar o te capacitor hei whakapiki i tētahi power factor.
- Tātaitai Piki VoltageTātaitia te piki voltage mō te whakatipu hiko kua whakaurua, mō te PV rānei.
- Tātaitai PV isolator me te whakawhenuaWhakatauhia ngā taura PV array, te d.c. isolator me te whakawhenua.
- Tātaitai PV stringNgā module ia string, te iahiko string me te isolator mō te PV.
- Tahua rerenga tūturu RCDHe pēhea te rerenga tūturu ka taea e tētahi RCD te kawe.
- Arotake whakaritenga RCDTirohia ngā ara iahiko ia RCD me te wehenga rama.
- Tātaitai TransformerTātaitia te iahiko uta katoa me te impedance o te transformer.
- Arotake Ngā Hua WhakamātautauTirohia ngā hua whakamātautau ine ki ngā rohe Section 8.
- Tātaitai hōhonu taura i raro i te whenuaTe oneone ki runga me te wehenga mō tētahi taura nehua.
- Tātaitai Whakakī ConduitTirohia mēnā ka uru tētahi paihere taura ki tētahi conduit.