How to Use the Voltage Drop Calculator Correctly

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Check Voltage Drop Correctly: Complete Guide

Voltage drop in electrical conductors must not exceed 3% for final circuits according to DIN VDE 0100-520. This guide shows you how to use our Voltage Drop Calculator correctly.

Important Steps

  1. Select Current Type: AC (230V), Three-phase (400V), or DC
  2. Enter Current or Power: You can enter amperes or watts
  3. Select Cross-Section: Choose existing wire gauge from dropdown
  4. Cable Length: Enter simple length (not round trip)
  5. Material: Copper (best) or Aluminum

Result Interpretation

  • ✅ Within standard (below 3%)
  • ⚠️ Marginal (3-4%)
  • ❌ Too high (above 4%)

DIN VDE 0100-520 Limits

Final circuits: Max. 3% | Total from meter: Max. 4%

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Published on: 04.01.2026 by umrechner.online
Voltage Drop Calculator Tutorial DIN VDE 0100-520 Electrician Guide