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Electrical Load Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Formel

Total Load = Σ (Wattage × Usage Hours) per circuit

Trin-for-trin guide

  1. 1List all devices on circuit, sum wattages
  2. 2Apply the formula using your project measurements
  3. 3Add required safety factors or waste allowances per code

Løste eksempler

Input
Lights 300W + outlets 1200W + appliance 1500W
Resultat
Total Load = 3000W on 20A circuit = 25A → overloaded

Almindelige fejl at undgå

  • Not applying code-required safety factors or derating
  • Forgetting to account for waste and cut losses in material estimates

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