
Foam
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MyElectricCalc
OhmNexus
WattSized
Free cable size calculator and electrical calculators for NZ and Australia. Voltage drop, maximum demand, loop impedance and more, to AS/NZS 3008 and 3000.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | github.surf | ampsize.nz |
| Pricing | ||
| Platforms | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of GitHub Surf yet.
AmpSize is a set of 44 free electrical calculators for electricians, engineers, estimators and apprentices in New Zealand and Australia. Size a cable to AS/NZS 3008.1.2 (NZ) or AS/NZS 3008.1.1:2025 (AU), check voltage drop, maximum demand, earth fault loop impedance, fault ratings, conduit fill...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of AmpSize.nz yet.
How often each product is chosen within a category, 0–100% relative to the other.


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