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Standards-driven, mobile-responsive iframe widgets. One line of HTML. Cable sizing per IEC, voltage drop, Ohm's law — the math your readers actually need.

Live preview — IEC 60364-5-52 cable sizing

This is exactly what your readers will see when you embed it. Try changing the inputs.

Copy & paste this snippet

Paste anywhere — WordPress, Ghost, Medium, Notion, Confluence, custom HTML. Works inside any standard CMS that allows raw HTML or iframe embeds.

<iframe src="https://aionlinecalculator.com/embed/cable-sizing-iec.html"
        width="100%" height="620" frameborder="0"
        loading="lazy"
        title="Cable sizing calculator IEC 60364">
</iframe>
<p style="font-size:12px;color:#666;margin-top:6px;">
  Calculator by <a href="https://aionlinecalculator.com/cable-sizing-calculator-iec-60364.html">AI Calculator</a>
</p>

Auto-resize (recommended)

Add the resize helper so the iframe always fits its content without scrollbars:

<script src="https://aionlinecalculator.com/embed/embed-resize.js" async></script>

Customization options

Append these as URL parameters to the iframe src:

?theme=light: Switch to light theme (default is dark)
?theme=dark: Force dark theme even when the host page is light

Example: https://aionlinecalculator.com/embed/cable-sizing-iec.html?theme=light

Available embeds

Live Cable sizing — IEC 60364-5-52 Copper / aluminium, PVC / XLPE, methods A1–E. Returns smallest cable size meeting corrected ampacity.

Coming soon Cable sizing — NEC 310.16 (USA) Imperial / AWG, 60°C / 75°C / 90°C copper and aluminium conductors per NEC.

Coming soon Voltage drop Single-phase / three-phase voltage drop with code-limit check (NEC, IEC, AS/NZS).

Coming soon Ohm's law V / I / R / P with full unit conversion (mV, kV, mA, kA, mΩ, MΩ).

Coming soon Chemical dosing Water-treatment dosing rate for chlorine, alum, lime, NaOH, polymer.

Coming soon BMI WHO and Asian-population cut-offs, metric and imperial.

Frequently asked

Is it really free?

Yes — for personal blogs, company sites, internal docs, university courses, and trade-press articles. No paywall, no tracking pixel, no ads inside the iframe.

What's the catch?

One small attribution link in the footer of the embed pointing back to the full calculator on aionlinecalculator.com (do-follow). Don't remove it — it is what keeps the embed free.

Does it slow down my page?

The embed loads lazily by default (loading="lazy") and the page itself is ~12 KB gzipped with zero external dependencies. It won't hurt your Core Web Vitals.

Will it work on AMP / static-site generators?

Yes, anywhere an <iframe> tag is allowed. For strict AMP, use <amp-iframe> with a placeholder.

Can I request a calculator?

Yes — email us with the formula or standard you need. We prioritize embeds based on demand.

What about the math — is it accurate?

The IEC cable sizing embed uses IEC 60364-5-52 Annex B Table B.52.4 (PVC) and Table B.52.5 (XLPE) for ampacity, with temperature correction factors from Table B.52.14 and grouping factors from Table B.52.17. Results are guidance only — verify against the current edition of the standard and have a licensed engineer sign off final design.

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