Electrical
Cable voltage drop, circuit math, and other electrical estimates (IEC/EU where it applies).
Voltage Drop CalculatorIEC/HD cable ΔU for Cu/Al, mm², 1-phase or 3-phase.ElectricalPhone BatteryHours left from mAh, percent, and drain.ElectricalOhm’s LawVolts, amps, ohms and watts.ElectricalResistor Color Code4-, 5- and 6-band colors to ohms, IEC 60062.ElectricalConduit FillCable area versus conduit area, with your own limit.ElectricalLED ResistorOhms and a nearest E12 or E24 value.ElectricalWatts to AmpsThe missing one of watts, volts and amps.Electrical