How Many Amps Is 25.4 kW at 575V?

25.4 kW at 575V draws about 30 amps on an AC three-phase circuit at PF 0.85, typical for commercial HVAC, industrial motors, rooftop units, and three-phase panel loads. Actual current varies with equipment power factor and duty cycle.

25.4 kW at 575V, AC three-phase (PF 0.85)

30 Amps

25.4 kilowatts at 575V on AC three-phase ≈ 30 amps

AC Single Phase (PF 0.85)51.96 A

DC (ideal baseline)44.17 A

Try: 25kW at 575V 22kW at 575V 30kW at 575V 20kW at 575V

Volts

Amps (AC three-phase, PF 0.85)

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 25.4 ÷ 575 = 25,396 ÷ 575 = 44.17 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

25,396 ÷ (0.85 × 575) = 25,396 ÷ 488.75 = 51.96 A

AC Three Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (√3 × PF × V_L-L), where V_L-L is the line-to-line voltage

25,396 ÷ (1.732 × 0.85 × 575) = 25,396 ÷ 846.52 = 30 A

Equipment & Circuit Sizing

Breaker Sizing

Breaker ratings are in amps, not watts, so the real install answer depends on the equipment nameplate FLA, whether the load is continuous (NEC 210.19(A) sizes the conductor and OCP at 125% of a continuous load, equivalently 80% of breaker rating), conductor ampacity and temperature rating, ambient and bundling derates, and any motor or HVAC provisions (NEC 430 / 440). At roughly 30A on AC three-phase at 575V, the load sits in the bracket between a 30A standard size (non-continuous) and the next size up that covers a continuous load under 210.19(A) (around 40A). The actual install pick depends on whether the load is continuous and the factors above; a conversion page can't pick a single "right" breaker from the amp draw alone.

Energy Cost

25.4 kW costs $4.32/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (AC three-phase)

How the line current for 25.4 kW at 575V changes with load power factor, on the same AC three-phase circuit basis the rest of the page uses. DC has no power factor; PF 1.0 represents resistive AC loads.

Load Type	PF	25.4 kW at 575V (AC three-phase)
Resistive (heaters, incandescent)	1	25.5 A
Fluorescent lamps	0.95	26.84 A
LED lighting	0.9	28.33 A
Synchronous motors	0.9	28.33 A
Typical mixed loads	0.85	30 A
Induction motors (full load)	0.8	31.87 A
Computers (without PFC)	0.65	39.23 A
Induction motors (no load)	0.35	72.86 A

AC Conversion Comparison

On DC, 25.4kW at 575V draws 44.17A. AC single-phase at PF 0.85 pulls 51.96A because reactive current is added on top of the real power. Three-phase at the same voltage needs only 30A per line since the same 25.4kW is shared across three conductors instead of one.

Circuit Type	Formula	Result
DC	25,396 ÷ 575	44.17 A
AC Single Phase (PF 0.85)	25,396 ÷ (0.85 × 575)	51.96 A
AC Three Phase (PF 0.85)	25,396 ÷ (1.732 × 0.85 × 575)	30 A

Other kW Values at 575V

kW	AC 3-Phase per line, PF 0.85	AC 1-Phase PF 0.85
4 kW	4.73 A	8.18 A
5 kW	5.91 A	10.23 A
6 kW	7.09 A	12.28 A
7.5 kW	8.86 A	15.35 A
8 kW	9.45 A	16.37 A
10 kW	11.81 A	20.46 A
12 kW	14.18 A	24.55 A
15 kW	17.72 A	30.69 A
18 kW	21.26 A	36.83 A
20 kW	23.63 A	40.92 A
22 kW	25.99 A	45.01 A
25 kW	29.53 A	51.15 A
30 kW	35.44 A	61.38 A
35 kW	41.34 A	71.61 A
40 kW	47.25 A	81.84 A

Same kW, Other Voltages

Each destination page leads with the interpretation most common for that voltage, so the amps shown below use the same basis as the page you'd land on: single-phase for residential voltages, three-phase for commercial/industrial panel voltages, DC for low-voltage.

electrical_services 25.4 kW at 208V = 82.93A (3-phase) electrical_services 25.4 kW at 220V = 135.81A (1-phase) electrical_services 25.4 kW at 230V = 129.9A (1-phase) electrical_services 25.4 kW at 240V = 124.49A (1-phase) electrical_services 25.4 kW at 400V = 43.12A (3-phase) electrical_services 25.4 kW at 460V = 37.5A (3-phase) electrical_services 25.4 kW at 480V = 35.94A (3-phase)

Related Calculations

bolt 25,396W to amps at 575V payments 25,396W running cost cable Wire size for 30A at 575V (3Φ)

Frequently Asked Questions

How many amps is 25.4 kW at 575V?expand_more

25.4 kW at 575V draws about 30 amps on an AC three-phase circuit at PF 0.85. Alternate cases at the same voltage: 44.17A on DC, 51.96A on AC single-phase.

Why do industrial systems use kW instead of watts?expand_more

Industrial equipment operates at higher power levels. 25.4 kW is easier to express than 25,396W. The math is identical, just scaled by 1000.

How many amps does a 25.4 kW EV charger draw at 575V?expand_more

575V is commercial/industrial panel voltage, not a typical AC EVSE feed to a vehicle. On three-phase 575V, 25.4 kW works out to about 30A per line (three-phase at PF 0.85). In practice, 400-480V three-phase is usually the AC input to a DC fast charger (50-350 kW CCS/NACS stations like Tesla Superchargers), which rectifies to DC and delivers that directly to the vehicle, rather than an AC EVSE connector. A 25.4 kW figure at 575V is most likely the AC feed to a smaller commercial cabinet or the control-side input of a larger DC fast charger, not an at-the-car AC current.

What is 25.4 kW in watts?expand_more

25.4 kW equals 25,396 watts. Multiply kilowatts by 1000.

How much does 25.4 kW cost to run?expand_more

25.4 kW costs $4.32 per hour at $0.17/kWh (US residential average, last reviewed April 2026). At 8 hours/day that is $1,036.16 per month.

This calculator provides estimates for reference purposes only. Always consult a licensed electrician and verify compliance with the National Electrical Code (NEC) and local electrical codes before performing any electrical work.