Are you designing a low-voltage installation and want to quickly verify whether you’ve used a cable with the correct cross-section? You’re in the right place! The new tool allows you to calculate the voltage drop depending on:

  • the cable material (copper/aluminum),
  • the cable length,
  • the cable cross-section,
  • the current drawn by the loads,
  • the supply voltage of the circuit.

Sounds familiar? Not quite. We have something for you SOMETHING NEW. Our tool is divided into two sections:

  1. Room conditions (for temperature 20ºC)
  2. FIRE CONDITIONS (temperature rise over time – taking into account the conductor resistance correction factor in accordance with SITP WP-02:2021 guidelines)

Try out the new tool and check whether the circuit you’re designing will perform correctly when exposed to high temperatures (such as during a fire).

It should be noted that circuits powering fire protection devices are, by design, required to operate reliably after a fire hazard occurs (exposure to extreme temperatures exceeding even 1000ºC).

Narzędzie jest całkowicie darmowe. Kalkulator spadku napięcia na kablu znajdą Państwo na naszej stronie internetowej.

We hope that access to the Calculator will make it easier to verify the basic parameters of a circuit, as well as draw your attention to the challenging issue of conductor resistance increasing with temperature.

Best regards,
W2 Team