AC 3φ (L-N) Amps to Watts
Convert electrical current or amperage in amps to power in watts and milliwatts (mW). Supports DC, single-phase, and three-phase AC circuits.
A
V
0.0 to 1.0
AC systems require a power factor. Resistive loads are usually 1.0, while inductive loads (like motors) are less than 1.0.
Calculated Power Output
0Watts
= 0 mW
Formula: P = 3 × PF × I × VL-NAC 3φ L-N Quick Reference (120V, PF=0.8)
| Current (Amps) | Voltage (Volts) | PF | Power (MW) |
|---|---|---|---|
| 4.16 mA (500mW) | 120 V | 0.8 | 0.00 kW |
| 1 A | 120 V | 0.8 | 0.29 kW |
| 10 A | 120 V | 0.8 | 0.0029 MW |
| 20 A | 120 V | 0.8 | 0.0058 MW |
| 30 A | 120 V | 0.8 | 0.0086 MW |
| 50 A | 120 V | 0.8 | 0.0144 MW |
| 100 A | 120 V | 0.8 | 0.0288 MW |
Industrial & High Voltage Benchmarks (11kV, 33kV, 4000A)
| System / Label | Voltage | Current | Power (MW) |
|---|---|---|---|
| 11 kV System | 11 kV | 100 A | 1.52 MW |
| 11 kV System | 11 kV | 500 A | 7.62 MW |
| 33 kV System | 33 kV | 100 A | 4.57 MW |
| 33 kV System | 33 kV | 500 A | 22.86 MW |
| High Current | 0 kV | 4000 A | 2.30 MW |
* Industrial calculations assume 3-Phase L-L system with PF=0.8.
Three Phase AC (Line-to-Neutral) Calculation
P(W) = 3 × PF × I(A) × VL-N(V)To get Milliwatts (mW): P(mW) = P(W) × 1000
When using line-to-neutral voltage in a three-phase system, the power is exactly three times the power of a single phase.
Example:
3 × 0.8 × 2A × 120V = 576W