MEP Electrical Calculators
Electrical supply, lighting distribution and containment across a building.
Electrical Live Tool
Electrical Supply & Lighting Calculator
Sizes the transformer and standby generator from a computed maximum demand, plus main switchboards and general/emergency luminaire counts.
Transformer = Max Demand × (1 + Allowance) rounded up to a standard rating; Generator = Max Demand × Critical Share; Luminaires = Lit Area ÷ Area per Luminaire