Guides
Walkthroughs and references for Australian electricians
Long-form guides that go deeper than a calculator. Each one explains the underlying standard, walks through worked examples, and links to the relevant ElecCalc tool. AS/NZS 3000, AS/NZS 3008.1.1:2025, IEEE 1584, and more.
Motors & Power
Power Factor Correction for Industrial Sites
How to calculate capacitor bank size for power factor correction. Real, reactive, and apparent power, demand penalties, APFC relays, and harmonic resonance.
8 min read
Cable Sizing
Conduit Fill Calculations Under AS 2053 and AS/NZS 3000
How to calculate conduit fill percentage for Australian installations. Cable area tables, the 50% rule, worked examples, and common mistakes.
7 min read
Motors & Power
Motor Starting Methods Compared: DOL, Star-Delta, Soft Starter, VFD
Compare DOL, star-delta, soft starter, and VFD motor starting methods. Inrush current, torque, cable sizing impact, and worked examples.
8 min read
Solar & EV
Solar PV Voltage Rise to AS/NZS 4777.1:2024
How to calculate solar PV voltage rise at the point of connection per AS/NZS 4777.1:2024. Formula, cable impedance, and two worked examples.
8 min read
Protection
RCD Selection for Australia and New Zealand: Type A, B, F Explained
How to select the right RCD type and sensitivity for Australian and NZ installations. Type AC, A, B, F explained with EV and solar examples.
8 min read
Cable Sizing
Maximum Demand Calculation Using AS/NZS 3000 Tables C1 and C2
How to calculate maximum demand for Australian installations using AS/NZS 3000 Tables C1 and C2. Diversity factors, worked examples, main switch sizing.
9 min read
Cable Sizing
Voltage Drop in Australian Installations Explained
How to calculate and check voltage drop per AS/NZS 3000 Clause 3.6. Formula, R and X tables, single vs three-phase, and two worked examples.
8 min read
Protection
Arc Flash Analysis Step by Step (IEEE 1584:2018)
How to perform an arc flash analysis to IEEE 1584:2018. Incident energy, arc flash boundary, PPE category, electrode configuration, and a worked example.
11 min read
Cable Sizing
Cable Sizing Walkthrough for AS/NZS 3008.1.1:2025
How to size cables to AS/NZS 3008.1.1:2025. Current carrying capacity, voltage drop, earth fault loop impedance, derating factors, and two worked examples.
12 min read
Earthing
Earthing System Design Guide for AS/NZS 3000 Section 5
How to design an Australian earthing system to AS/NZS 3000 Section 5. Soil resistivity, electrode sizing, earth resistance, touch and step voltage.
11 min read