Cable Sizing Calculator AS/NZS 3008 · 3000
1 · Load & Supply Cl 2.3 A(a) — design current Ib
Standard
Phase
Nominal voltage
V
Design load
Power factor
cos φ
Efficiency
%
Load growth
%
2 · Cable Tables 4–21 — type & conductor
Cable type
Insulation
Conductor
Sizing mode
Parallel cables
× / phase
Formation
3 · Installation & Derating Tables 3(1)–3(4) method · Tables 22–29 factors
Installation
Arrangement (in air)
Grouping arrangement
Adjacent circuits
circ.
Ambient air temp.
°C
4 · Voltage Drop Cl 2.4 — Tables 40–51 / Cl 4.5
Cable distance
m
Max voltage drop
V-drop method
Conductor temp.
5 · Protection & Short-Circuit Cl 2.5 — Table 52 · AS/NZS 3000 §2.5.3
Protective device
Device rating In
A
Disconnection time
Instant trip ×
× In
Fault currentfrom a transformer →
kA
Clearing time
ms
Breaking capacity
kA Icu
Analysissolved
DocumentAudit-ready sheet · —
Notes
  1. All cable installation per AS/NZS 3000:2018.
  2. Ratings, rating factors and impedance per the published tables of AS/NZS 3008.1.1:2017 — table references on the calculation sheet.
  3. Verify protective-device let-through energy against manufacturer curves.
References
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— · Rev A · — Report Print / Save as PDF A professional aid, not engineering judgement — you remain responsible for verifying every input and result against the standards that apply to your work.