Facts checked · 1 min read
ElecCalc and AmpSize
ElecCalc and AmpSize compared as cable size calculators for NZ and AU: editions cited, price, reports and guides, each fact with its source and date.
What ElecCalc does well
- ElecCalc has 25 free tools and says it has no paywall and no subscription. (opened)
- It cites AS/NZS 3008.1.1:2025 and has a guides section. (opened)
- Its cable sizing page states its own limits: the lookup figures are indicative, and some checks are simplified. (opened)
- An iOS app is linked from its home page. (opened)
The facts side by side
A mark after each fact says how it was read: O opened, S snippet, M measured. How to read the marks
Where AmpSize differs
- For New Zealand work AmpSize reads AS/NZS 3008.1.2:2017.
- AmpSize has 29 worked guides. Each runs one circuit and names the table behind each step.
- AmpSize has a plan builder. It counts the rooms and devices on a plan into circuits and a schedule.
Which to use
Use ElecCalc for Australian work on the 2025 edition when you want an iPhone app.
Use ElecCalc for solar PV sizing or emergency lighting, which AmpSize does not calculate.
Use AmpSize for New Zealand work on AS/NZS 3008.1.2.
Use AmpSize when you need the table named on each line of the result.
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