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Hardware

Power, wiring, device testers and AV calculators. (7)

Battery Runtime CalculatorHow long a battery or bank runs a load, from Ah, voltage, depth of discharge and inverter efficiency.

Generator Wattage CalculatorSize a generator from a list of appliances: running watts plus the largest starting surge, with margin.

Solar Battery Bank SizingBattery bank capacity for a daily load and days of autonomy, with series/parallel battery count.

Solar Panel OutputDaily, monthly and yearly energy from your panels, and how many panels a daily load needs.

UPS Runtime CalculatorEstimate UPS backup time from its batteries and your load in watts or VA, and check the load against the rating.

Voltage Drop CalculatorVoltage drop, % loss and cable heat for a DC, single-phase or three-phase run, in mm² or AWG.

Wire Size CalculatorSmallest metric and AWG conductor that keeps voltage drop under your limit for a given current and length.