Як розрахувати Amps to Watts
Що таке Amps to Watts?
An amps to watts converter calculates electrical power from current and voltage. Used to determine the wattage of appliances and the capacity needed from a power source.
Формула
W (DC) = A × V; W (AC) = A × V × PF
- A
- Current (A) — Electrical current in amperes
- V
- Voltage (V) — Electrical potential in volts
- W
- Power (W) — Electrical power in watts
- PF
- Power factor ((dimensionless)) — For AC loads; typically 0.8–1.0
Покрокова інструкція
- 1Watts = Amps × Volts (DC)
- 2Watts = Amps × Volts × Power Factor (AC)
- 3Power factor for motors is typically 0.8–0.95
- 4Standard voltages: 120V US, 230V EU, 240V UK
Розв'язані приклади
Введення
13 amps at 240V
Результат
3,120 watts (standard UK plug max)
Введення
20 amps at 120V
Результат
2,400 watts (US circuit)
Введення
32 amps at 240V
Результат
7,680 watts (EV charger)
Часті запитання
How do I calculate watts from amps?
Multiply amps by volts. In AC, also multiply by power factor. Example: 10 A × 240 V = 2,400 W.
Why does my kettle pull more amps than my TV?
The kettle uses more power (watts). At the same voltage, higher wattage means higher amps. Ohm's law: W = V × A.
What's a safe amperage for a standard outlet?
In the US, 15–20 A circuit breakers are standard, supporting 1,800–2,400 W at 120 V. In UK, 13 A plugs support 3,120 W at 240 V.
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