Science

Electrical cable size calculator

Work out the cross-section of a copper electrical cable from the current or power, the length and the circuit breaker. The tool checks the current-carrying capacity for the installation method, ambient temperature and grouping, then the voltage drop, and keeps the larger of the two sizes.

Local processing · Fits its container · Updated without touching your code

Configure widget Use the full tool

Embed this widget

Customize the result, check the live preview, then copy the code.

Preview

Embed code type

Responsive and automatically resized by Bethemesh.

Code to copy

<div
  class="bethemesh-widget"
  data-tool="electrical-cable-size-calculator"
  data-lang="en"
  data-theme="auto"
  data-min-height="1100"
  data-max-height="1600"
  data-sandbox="allow-scripts allow-same-origin"
  data-allow="clipboard-write"
></div>
<script src="https://bethemesh.com/widgets/v1/bethemesh.js" async></script>
<p style="margin:6px 0 0;font:12px/1.4 system-ui,sans-serif">Free tool by <a href="https://bethemesh.com/en/tools/electrical-cable-size-calculator">Bethemesh</a></p>

The documentation details the options, themes, sizes and the integration in each CMS. The code works in an HTML page, WordPress, Webflow, Wix, React, Vue or Astro.

Documentation All widgets

Workspace

Personal

Preferences

Contribute

About

Electrical cable size calculator

Embed this widget

Preview

Embed code type

Code to copy

Need help with the integration?