⚡ Electrician tools
Cable size calculator, voltage drop checker and exam trainer — free, no sign-up.
🔌 Cable cross-section
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Guideline for 2-/3-core Cu cable, installation B2/C, 25 °C. Binding: DIN VDE 0298-4.
📉 Voltage drop (1~ 230 V)
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Length × 2 (out and return conductor). DIN 18015 recommends ≤ 3 % from meter to consumer.
🎓 Electrician exam trainer
Typical Gesellenprüfung questions — start right away · 18 questions
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All calculations are guideline values — always verify norm cases per DIN VDE with a qualified electrician.