Construction site supply calculator
Mga rule ng supply, RCD at test para sa construction site.
Reads AS/NZS 3012:2019. Tables checked 1 Oct 2026.
Subukan ang isang job 6
Nilalagyan ng halimbawang value ang bawat job. Palitan ang mga ito ng sarili mong value.
- Supply a building site from a generatorThe RCD protection for tools on a construction site generator.
- Supply a site from the house boardThe rules when the permanent switchboard feeds the site.
- Supply site wiring from an inverterThe rules for an RCD-protected inverter supply.
- Supply a welder from a generating setThe rule for an arc welder built into a generating set.
- Use hire equipment on a siteThe inspection and RCD rules for hired equipment.
- Supply a site in AustraliaThe supply and RCD rules for a construction site in Australia.
Mga input
Worked example gamit ang mga default na input.
- Bansa
- New Zealand
- Pinagmulan ng supply
- Main ng electricity distributor
- Circuit
- Final sub‑circuit na nagsisimula sa construction switchboard
- Exception na naaangkop
- Wala
- Ang iyong bine-verify
- Portable na gamit na dala mo sa trabaho: mga tool at appliance, lead, extension cord set, generator at inverter
- Ang RCD ay portable RCD
- Oo
- Ito ay hire equipment
- Hindi
- May kasamang arc welder ang generating set.
- Hindi
Karagdagang proteksyon na batay sa RCD
Kinakailangan, 30 mA
- Clause ng supply
- AS/NZS 3012:2019 Cl 2.1.1(a)
- Clause ng proteksyon
- AS/NZS 3012:2019 Cl 2.4.6.1
- Agwat ng inspeksiyon at pagsubok
- 3months
- Push-button test ng RCD
- Connect the portable RCD to the supply socket, then press its test button before you connect equipment. Do this again every day while it is in use
- Test ng operating time ng RCD
- 3months
Design aid lang ang resultang ito. I-verify ito laban sa kasalukuyang standard.
Mga hakbang ng kalkulasyon
- Ayos ng supplyMain ng electricity distributor
AS/NZS 3012:2019 Cl 2.1.1(a)
- Kailangan ang karagdagang proteksyonOo
AS/NZS 3012:2019 Cl 2.4.6.1
- Pinakamataas na rated residual current30mA
AS/NZS 3012:2019 Cl 2.4.6.1
- Agwat ng inspection at test3months
AS/NZS 3012:2019 Table 6
- Push-button test ng RCDConnect the portable RCD to the supply socket, then press its test button before you connect equipment. Do this again every day while it is in use
AS/NZS 3012:2019 Table 6
- Test ng operating time ng RCD3months
AS/NZS 3012:2019 Table 6
- Socket‑outlet sa switchboard10A
AS/NZS 3012:2019 Cl 2.3.4
- Taas ng marka ng isolating switch6mm
AS/NZS 3012:2019 Cl 2.4.4
Tungkol sa calculator na ito
How this is calculated
The tool gives the supply arrangement and the RCD protection for a construction or demolition site. It reads AS/NZS 3012:2019.
- Supply arrangement. You pick the source, such as a distributor main. The tool finds the supply clause, here Cl 2.1.1(a).
- Additional protection. It reads Cl 2.4.6.1 for the circuit type and the exceptions. It says whether RCD protection is required.
- Residual current. It gives the maximum rated residual current for that circuit.
- Test intervals. It reads Table 6 for the inspection and test interval of the equipment.
- RCD tests. Table 6 also gives the push-button test and the operating time test.
- Switchboard points. It points at Cl 2.3.4 for socket‑outlets and Cl 2.4.4 for the isolating switch marking.
Worked example
- Final subcircuit from a distributor main, portable equipment. RCD protection is required at 30 mA. The inspection and test interval is 3 months. The operating time test is also 3 months. The push-button test is daily while the RCD is in use.
Limits
The RCD must trip on every active conductor and the neutral. Where a board feeds two or more lighting circuits, spread them across the RCDs. New Zealand sites also complete a Record of Assessment in the Appendix G form. The tool does not size cable. It does not check the cord length.
The tool gives one supply arrangement at a time. Pick the arrangement that matches the board in front of you. Then read the clause the tool names. Test the RCD on the site, as the intervals say. Record the results with the date.
See also: Construction site supplies to AS/NZS 3012, Builder's pole, RCDs and cord lengths and Site cord length.
Mga tanong
Design aid ang resulta. I-verify ito laban sa kasalukuyang standard.
Ano ang ginagawa ng construction site supply tool?
Iniuulat ng tool ang mga supply arrangement na pinapayagan sa site na ginagawa o dinedemolish, ang RCD protection para sa circuit, at ang inspection at test interval para sa equipment. Sumusunod ito sa AS/NZS 3012:2019.
Anong RCD ang kailangan ng construction site?
Pinoprotektahan ng Clause 2.4.6.1 ang bawat final sub‑circuit run mula sa construction switchboard gamit ang RCD na hanggang 30 mA, na nagti-trip sa bawat active conductor at sa neutral. May tatlong exception: kapag nanganganib ang mechanical operation, SELV o PELV supply, at safety isolating transformer.
Gaano kadalas sinusuri ang mga site RCD?
Isaksak ang portable RCD, o paandarin ang generator o inverter na may dala nito, pagkatapos pindutin ang test button nito bago ikonekta ang equipment. Gawin ito araw-araw kapag ginagamit. Pindutin ang test button ng fixed RCD buwan-buwan. Gawin ang operating-time test kada 3 buwan sa portable RCD, kada 12 buwan sa fixed na RCD.
Anong supply ang pinapayagan sa site?
Pinapayagan ng Clause 2.1.1 ang main ng electricity distributor, umiiral na switchboard ng permanent installation, low voltage generating set na sumusunod sa at naka-install ayon sa AS/NZS 3010, o inverter ayon sa AS/NZS 4763. Iyan ang AS/NZS 3012:2019; binanggit din ng 2010 edition ang AS 2790 para sa generator. Isolated winding types ay nagsusuplay lang ng separated circuit.
Sakop ba ng tool ang insulation resistance para sa welders?
Oo, pero para lang sa arc welders na nakabuild-in sa generating sets, na saklaw ng Clause 3.5.4 para sa Table 7 ng AS/NZS 3012:2019. Ang ibang equipment ay sumusunod sa AS/NZS 3760 sa halip; sakop ng Test and Tag tool ng AmpSize ang mga check na iyon.
Mga worked example
Background
Mga clause at table na binabasa ng tool na ito
- AS/NZS 3012:2019 Cl 2.3.4Socket‑outlets on a site switchboard
- AS/NZS 3012:2019 Cl 2.4.4Site isolating switch marking
- AS/NZS 3012:2019 Cl 2.4.6.1Additional protection for a site under construction or demolition
- AS/NZS 3012:2019 Cl 3.3.2New Zealand record of assessment
- AS/NZS 3012:2019 Cl 3.4Verification of RCDs on site
- AS/NZS 3012:2019 Cl 2.1.1, 2.1.2, 2.4.6Permitted supply arrangements for a site under construction or demolition
- AS/NZS 3012:2019 Cl 2.4.6 and Table 6RCD protection and periodic verification intervals for a site under construction or demolition
- AS/NZS 3012:2019 Table 7Minimum insulation resistance for arc welders incorporated into generating sets
Bawat clause at table, kasama kung paano ito na-verify
Huling na-check ang mga table noong 1 Oct 2026.
Mga kaugnay na tool
- Test and tag intervalsRetest intervals and pass limits for portable gear.AS/NZS 3760
- Hand-held appliance supplyRead the supply arrangements regs 88 to 89A list.Electricity (Safety) Regulations 2010
- Show and carnival wiring checkerShow wiring RCD checks, plus site wiring depth and height.AS/NZS 3002Electricity (Safety) Regulations 2010
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