Practical electrical conversion, appliance energy, battery sizing, and motor current guides with formulas, charts, and worked examples.
Showing 13–19 of 19 articles
Electrical Calculations Learn how many amps are in a kilowatt at common voltages. Use accurate DC, single-phase, and three-phase formulas, examples, and conversion tables.
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Appliance Energy Learn how many amps a TV uses by size, wattage, and voltage. Calculate TV current at 120V, 230V, or from a 12V battery and inverter.
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Appliance Energy Learn how many amps a washing machine uses at 120V, 220V, 230V and 240V, including running current, startup surge and circuit needs.
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Voltage Guides Learn how many amps for 220 volts using watts, resistance, and power factor. Includes single-phase, three-phase, appliance, and circuit charts.
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Appliance Energy Learn how many watts a freezer uses while running and starting. Compare chest and upright models, annual kWh, electricity cost, and backup power.
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Battery Guides Convert kilowatt hours to amp hours using voltage, formulas, examples, and tables. Learn how efficiency and depth of discharge affect battery size.
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Motor Guides Use this motor amps chart to compare full-load current by HP, voltage, and phase. Learn FLA vs FLC, motor formulas, startup amps, and sizing limits.
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