Work it out.
Calculators tailored to electrical work: understand the fundamentals, size the cable, work out power and load, and see the economics. Enter your own values — the result updates live.
Step A — The basis
Start here: Ohm's law and power — the relationship between voltage, resistance, current and power.
Step B — Cable & voltage drop
Size the cable: calculate the voltage drop and find the smallest cross-section that stays within the limit.
Step C — Power & load
Calculate power in single-/three-phase systems and add several circuits together with a diversity factor.
Step D — Protection & verification
Kontrollér sikkerheden: tåler lederen kortslutningen (K²S² ≥ IK²·t), og vælg RCD/HPFI så berøringsspændingen holder i TT-systemet.
Step E — Finances
Convert power and run time into kWh and cost using your own electricity price.
Step F — Lighting design
Dimension lighting systems according to EN 12464-1: find lux on the work surface or number of lamps to reach your target lux.
Step V — Directory
Guided multi-step wizard: from desired power to a concrete standard transformer size and max. voltage drop — pure geometry on your answers plus cited standard range.
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