AS/NZS 3008.1.2:2017
新西兰电缆选型标准。AmpSize 将其用于导体数据：载流量额定值、电阻和电抗、路径降容系数以及短路 k 系数。
备注
- 引用版本
- AS/NZS 3008.1.2:2017
- 已应用的修正案
- 来源中未注明修正案 (16 个表格)
- 表格最后核对时间
- 26 Sept 2026（首位：19 Sept 2026）
- 表
- 16：16 项已核实
- 条款
- 6
此处未转载标准原文。AmpSize 是设计辅助工具。请对照现行标准核验结果。
目录 (22)
条款 (6)
地下布线管道中的回路组
电缆截面工具在地下外壳中的一组回路旁列明本条款。本条款列明 Tables 26(1) 和 26(2)，工具据此读取每根管道一根电缆的情形。对于容纳整个回路的管道，Table 3(4) 将共用同一外壳的回路引向 Table 22。此时，工具取 Table 26(2) 与 Table 22 系数中较低者，并注明其所读取的表。
读取它的工具:
中性线中的三次谐波电流
当您在三相回路中输入三次谐波百分比后，电缆截面工具会读取本条款。它打印该谐波产生的中性线电流，应用 Table 2 降低系数，并在该步骤旁列明本条款，以便您核对本条款规定的选型依据。修正系数工具同样如此。
读取它的工具:
被 1 处引用
电压降计算方法
电压降和电压升高工具采用此方法。电阻和电抗依据功率因数合成，得出每安培米的毫伏数。然后将该数值乘以电流和路径长度。
被 9 处引用
- Voltage drop single phase vs three phase
- Voltage drop on 2.5 mm² over 30 m
- Submain voltage drop estimate for a 160 A tender
- 24 V DC voltage drop on an instrument loop
- Total voltage drop: mains, submain and final
- Voltage rise for a 5 kW solar inverter cable
- AS/NZS 3000 Clause 3.6.2: voltage drop limit
- Voltage drop with the mV/A·m method
- Voltage drop basics
不平衡负荷下的电压降
短路耐受工具依据本条款进行计算。它将保护装置允许通过的能量与导体可承受的能量进行比较。该校核采用故障电流、切断时间和 k 系数。
被 7 处引用
- Switchboard fault rating at 25 kA for 1 s
- Consumer mains fault withstand for 16 mm² copper
- AS/NZS 3008.1.2 Table 52: the k factor
- AS/NZS 3008 vs BS 7671: cable sizing compared
- Prospective fault current at a main switchboard
- IB ≤ IN ≤ IZ: the overload rule on a 32 A circuit
- Short-circuit withstand and the k factor
当您输入的切断时间超过本条款所涵盖的 5 s 时，短路耐受工具会列明本条款。结果仍会打印，并附警告：所引依据仅适用至 5 s。
读取它的工具:
表格 (16)
Reduction factors for harmonic currents in 4- and 5-core cables
修正系数工具读取四芯或五芯电缆中三次谐波电流的降低系数。超过 33 % 时，按中性线电流选定截面。谐波工具从频谱中读取相同的区间。
已核验：对照印刷版标准阅读，页码 27–28。检查于 24 Sept 2026。
读取它的工具:
Current ratings, single-core cable, two cables per circuit, thermoplastic 75 °C
电缆截面工具针对每种敷设方式，在此读取单相回路中单芯热塑性电缆（铜芯或铝芯）的表列额定值。
已核验：对照印刷版标准阅读，页码 35–37。检查于 24 Sept 2026。
被 9 处引用
- Hot water cylinder cable size for a 3 kW element
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- EV charger cable size for a 7 kW 32 A circuit
- AS/NZS 3008.1.2 Tables 4 to 21: current ratings
- AS/NZS 3008 vs BS 7671: cable sizing compared
- Motor full load current: 11 kW 400 V DOL
- Cable size for a 32 A single-phase 25 m run
- Current-carrying capacity and derating
Current ratings, single-core cable, two cables per circuit, cross-linked 90 °C
电缆截面工具针对每种敷设方式，在此读取单相回路中单芯交联电缆（铜芯或铝芯）的表列额定值。
已核验：对照印刷版标准阅读，页码 38–40。检查于 24 Sept 2026。
被 9 处引用
- Hot water cylinder cable size for a 3 kW element
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- EV charger cable size for a 7 kW 32 A circuit
- AS/NZS 3008.1.2 Tables 4 to 21: current ratings
- AS/NZS 3008 vs BS 7671: cable sizing compared
- Motor full load current: 11 kW 400 V DOL
- Cable size for a 32 A single-phase 25 m run
- Current-carrying capacity and derating
Current ratings, single-core cable, three cables per circuit, thermoplastic 75 °C
电缆截面工具针对每种敷设方式，在此读取三相回路中单芯热塑性电缆（铜芯或铝芯）的表列额定值。
已核验：对照印刷版标准阅读，页码 44–46。检查于 24 Sept 2026。
被 9 处引用
- Hot water cylinder cable size for a 3 kW element
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- EV charger cable size for a 7 kW 32 A circuit
- AS/NZS 3008.1.2 Tables 4 to 21: current ratings
- AS/NZS 3008 vs BS 7671: cable sizing compared
- Motor full load current: 11 kW 400 V DOL
- Cable size for a 32 A single-phase 25 m run
- Current-carrying capacity and derating
Current ratings, single-core cable, three cables per circuit, cross-linked 90 °C
电缆截面工具针对每种敷设方式，在此读取三相回路中单芯交联电缆（铜芯或铝芯）的表列额定值。
已核验：对照印刷版标准阅读，页码 47–49。检查于 24 Sept 2026。
被 9 处引用
- Hot water cylinder cable size for a 3 kW element
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- EV charger cable size for a 7 kW 32 A circuit
- AS/NZS 3008.1.2 Tables 4 to 21: current ratings
- AS/NZS 3008 vs BS 7671: cable sizing compared
- Motor full load current: 11 kW 400 V DOL
- Cable size for a 32 A single-phase 25 m run
- Current-carrying capacity and derating
Current ratings, multicore cable with three or four cores, thermoplastic 75 °C
电缆截面工具针对每种敷设方式，在此读取热塑性多芯电缆（铜芯或铝芯）的表列额定值。该数值是降容前的起始值。
已核验：对照印刷版标准阅读，页码 62–64。检查于 24 Sept 2026。
被 25 处引用
- Hot water cylinder cable size for a 3 kW element
- How many amps can 1.5 mm² cable carry?
- How many amps can 10 mm² cable carry?
- How many amps can 16 mm² cable carry?
- How many amps can 2.5 mm² cable carry?
- How many amps can 6 mm² cable carry?
- What size cable for a 22 kW EV charger?
- What size cable for a 25 A circuit?
- What size cable for a lighting circuit in NZ?
- What size cable for power points in NZ?
- Three circuits in a hot ceiling: correction factor
- What size breaker for 4 mm² cable
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- EV charger cable size for a 7 kW 32 A circuit
- AS/NZS 3008.1.2 Tables 22 to 29: derating
- AS/NZS 3008.1.1 vs 3008.1.2: AU and NZ conditions
- AS/NZS 3008.1.2 Tables 4 to 21: current ratings
- AS/NZS 3008 Table 13 (now 3.18): multicore ratings
- AS/NZS 3008 vs BS 7671: cable sizing compared
- AWG and the NEC for NZ and AU electricians
- Motor full load current: 11 kW 400 V DOL
- Cable size for a 32 A single-phase 25 m run
- Current-carrying capacity and derating
- Checking an existing circuit
Current ratings, multicore cable with three or four cores, cross-linked 90 °C
电缆截面工具针对每种敷设方式，在此读取交联多芯电缆（铜芯或铝芯）的表列额定值。
已核验：对照印刷版标准阅读，页码 65–67。检查于 24 Sept 2026。
被 10 处引用
- Hot water cylinder cable size for a 3 kW element
- Submain cable size for 3-phase 100 A over 60 m
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- EV charger cable size for a 7 kW 32 A circuit
- AS/NZS 3008.1.2 Tables 4 to 21: current ratings
- AS/NZS 3008 vs BS 7671: cable sizing compared
- Motor full load current: 11 kW 400 V DOL
- Cable size for a 32 A single-phase 25 m run
- Current-carrying capacity and derating
Grouping factors for bunched circuits, buried circuits and underground wiring enclosures
电缆截面和修正系数工具读取共用同一路径的回路的系数。同一路径的回路越多，系数越低，所需电缆截面越大。
已核验：对照印刷版标准阅读，页码 79, 84–87。检查于 24 Sept 2026。
被 9 处引用
- Hot water cylinder cable size for a 3 kW element
- Submain cable size for 3-phase 100 A over 60 m
- Three circuits in a hot ceiling: correction factor
- What size breaker for 4 mm² cable
- Cable size for a 20 A heat pump circuit in summer
- AS/NZS 3008.1.2 Tables 22 to 29: derating
- AS/NZS 3008 Table 22 (now 3.33): bunched grouping
- Current-carrying capacity and derating
- Correction factors in the 2017 and 2025 editions
Grouping factors for single-core circuits on trays, ladder supports, racks and cleats in air
电缆截面和修正系数工具读取桥架、梯架、支架或线卡上单芯回路的系数。该系数取决于支撑方式、层数以及回路是否相互接触。
已核验：对照印刷版标准阅读，页码 80。检查于 26 Sept 2026。
读取它的工具:
电缆截面计算器, 修正系数计算器, 现有回路检查 和 电缆桥架与梯架填充率.
Grouping factors for multicore cables on trays, ladder supports, racks and cleats in air
电缆截面和修正系数工具读取桥架、梯架、支架或线卡上多芯电缆的系数。该系数取决于支撑方式、层数以及电缆是否相互接触。
已核验：对照印刷版标准阅读，页码 82。检查于 26 Sept 2026。
读取它的工具:
电缆截面计算器, 修正系数计算器, 现有回路检查 和 电缆桥架与梯架填充率.
Rating factors for air and soil ambient temperature
电缆截面和修正系数工具读取路径上空气或地面温度的系数。温度较高的路径会降低电缆可承载的电流。
已核验：对照印刷版标准阅读，页码 88。检查于 24 Sept 2026。
被 11 处引用
- Submain cable size for 3-phase 100 A over 60 m
- Three circuits in a hot ceiling: correction factor
- What size breaker for 4 mm² cable
- Cable size for a 20 A heat pump circuit in summer
- AmpSize vs jCalc vs free cable sizing tools
- AS/NZS 3008.1.2 Tables 22 to 29: derating
- AS/NZS 3008.1.1 vs 3008.1.2: AU and NZ conditions
- AS/NZS 3008 Table 27 (now 3.44, 3.45): temperature
- Current-carrying capacity and derating
- Correction factors in the 2017 and 2025 editions
- Underground cables and civil interfaces
Rating factors for depth of laying
电缆截面和修正系数工具读取电缆埋设深度的系数。该系数仅适用于埋地电缆。
已核验：对照印刷版标准阅读，页码 89。检查于 24 Sept 2026。
Rating factors for thermal resistivity of the soil
电缆截面和修正系数工具读取土壤热阻率的系数。该系数仅适用于埋地电缆。
已核验：对照印刷版标准阅读，页码 90。检查于 24 Sept 2026。
Reactance at 50 Hz and a.c. resistance at 50 Hz
电压降、电压升高、回路阻抗和电缆截面工具依据本数据读取运行温度下的导体电阻和电抗。4-20 mA 回路供电预算读取导体电阻。
已核验：对照印刷版标准阅读，页码 98, 102–103。检查于 24 Sept 2026。
读取它的工具:
电缆截面计算器, 电压降计算器, 接地故障回路阻抗计算器, 电压升高计算器, 最大回路长度计算器, 4-20 mA 回路供电预算, 现有回路检查, 短路电流水平计算器, 总电压降计算器 和 电缆损耗运行成本.
被 13 处引用
- Homeowner shed supply voltage drop over 60 m
- Lighting circuit loop impedance, B curve 10 A
- Voltage drop single phase vs three phase
- Submain voltage drop estimate for a 160 A tender
- Max cable length for a 20 A C curve subcircuit
- 24 V DC voltage drop on an instrument loop
- Fault level at a sub-board, 300 kVA transformer
- Off-grid battery bank autonomy at 48 V
- AS/NZS 3000 Table 8.1: max Zs by curve and rating
- Voltage rise for a 5 kW solar inverter cable
- Voltage drop with the mV/A·m method
- Voltage drop basics
- Prospective fault current at a board
Values of constant K for determination of permissible short-circuit currents
此表按材料和绝缘分别给出一个固定 k 系数。电缆截面和短路耐受工具改为从短路限值表中读取 Table 52。在该表中，k 系数取决于 Tables 53 和 55 规定的温度限值。
已核验：对照印刷版标准阅读，页码 121–122。检查于 19 Sept 2026。
读取它的工具:
Short-circuit K values and temperature limits
短路耐受工具读取导体起始温度对应的 k 系数及短路温度限值。该限值取自绝缘等级和导体截面范围；若线路中接头的限值更低，则取接头的限值。
已核验：对照印刷版标准阅读，页码 121–123 (PDF 125–127), with Table 1 on page 13。检查于 26 Sept 2026。
读取它的工具:
引用本内容的指南和学习页面 (56)
- GuideHomeowner shed supply voltage drop over 60 m
- GuideLighting circuit loop impedance, B curve 10 A
- GuideVoltage drop single phase vs three phase
- GuideCable tray fill for a plant room: a second tier
- GuideSwitchboard fault rating at 25 kA for 1 s
- GuideHot water cylinder cable size for a 3 kW element
- GuideConsumer mains fault withstand for 16 mm² copper
- GuideHow many amps can 1.5 mm² cable carry?
- GuideHow many amps can 10 mm² cable carry?
- GuideHow many amps can 16 mm² cable carry?
- GuideHow many amps can 2.5 mm² cable carry?
- GuideHow many amps can 6 mm² cable carry?
- GuideVoltage drop on 2.5 mm² over 30 m
- GuideWhat size cable for a 22 kW EV charger?
- GuideWhat size cable for a 25 A circuit?
- GuideWhat size cable for a lighting circuit in NZ?
- GuideWhat size cable for power points in NZ?
- GuideSubmain voltage drop estimate for a 160 A tender
- GuideMax cable length for a 20 A C curve subcircuit
- GuideSubmain cable size for 3-phase 100 A over 60 m
- Guide24 V DC voltage drop on an instrument loop
- GuideFault level at a sub-board, 300 kVA transformer
- GuideThree circuits in a hot ceiling: correction factor
- GuideWhat size breaker for 4 mm² cable
- GuideTotal voltage drop: mains, submain and final
- GuideOff-grid battery bank autonomy at 48 V
- GuideCable size for a 20 A heat pump circuit in summer
- GuideAmpSize vs jCalc vs free cable sizing tools
- GuideEV charger cable size for a 7 kW 32 A circuit
- GuideAS/NZS 3008.1.2 Table 52: the k factor
- GuideAS/NZS 3008.1.2 Tables 22 to 29: derating
- GuideAS/NZS 3008.1.1 vs 3008.1.2: AU and NZ conditions
- GuideAS/NZS 3008.1.2 Tables 4 to 21: current ratings
- GuideAS/NZS 3008 Table 13 (now 3.18): multicore ratings
- GuideAS/NZS 3008 Table 22 (now 3.33): bunched grouping
- GuideAS/NZS 3008 Table 27 (now 3.44, 3.45): temperature
- GuideAS/NZS 3008 vs BS 7671: cable sizing compared
- GuideAWG and the NEC for NZ and AU electricians
- GuideMotor full load current: 11 kW 400 V DOL
- GuideProspective fault current at a main switchboard
- GuideAS/NZS 3000 Table 8.1: max Zs by curve and rating
- GuideVoltage rise for a 5 kW solar inverter cable
- GuideAS/NZS 3000 Clause 3.6.2: voltage drop limit
- GuideCable size for a 32 A single-phase 25 m run
- GuideVoltage drop with the mV/A·m method
- LearnConduit fill and installation methods
- LearnCurrent-carrying capacity and derating
- LearnVoltage drop basics
- LearnCable tray fill: one layer, tiers and grouping
- LearnChecking an existing circuit
- LearnCorrection factors in the 2017 and 2025 editions
- LearnIB ≤ IN ≤ IZ: the overload rule on a 32 A circuit
- LearnShort-circuit withstand and the k factor
- LearnUnderground cables and civil interfaces
- LearnHarmonics and neutral sizing
- LearnProspective fault current at a board