How Many Amps Is 17 kW at 575V?

At 575V, 17 kW pulls approximately 20.08 amps on AC three-phase (PF 0.85). This is the case typical for commercial HVAC, industrial motors, rooftop units, and three-phase panel loads. Always verify against the equipment nameplate for actual install sizing.

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

20.08 Amps

17 kilowatts at 575V on AC three-phase ≈ 20.08 amps

AC Single Phase (PF 0.85)34.78 A

DC (ideal baseline)29.57 A

Try: 18kW at 575V 15kW at 575V 20kW at 575V 12kW at 575V

Volts

Amps (AC three-phase, PF 0.85)

20.08

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 17 ÷ 575 = 17,000 ÷ 575 = 29.57 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

17,000 ÷ (0.85 × 575) = 17,000 ÷ 488.75 = 34.78 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

17,000 ÷ (1.732 × 0.85 × 575) = 17,000 ÷ 846.52 = 20.08 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 20.08A on AC three-phase at 575V, the load sits in the bracket between a 25A standard size (non-continuous) and the next size up that covers a continuous load under 210.19(A) (around 30A). 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

17 kW costs $2.89/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (AC three-phase)

How the line current for 17 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	17 kW at 575V (AC three-phase)
Resistive (heaters, incandescent)	1	17.07 A
Fluorescent lamps	0.95	17.97 A
LED lighting	0.9	18.97 A
Synchronous motors	0.9	18.97 A
Typical mixed loads	0.85	20.08 A
Induction motors (full load)	0.8	21.34 A
Computers (without PFC)	0.65	26.26 A
Induction motors (no load)	0.35	48.77 A

AC Conversion Comparison

On DC, 17kW at 575V draws 29.57A. AC single-phase at PF 0.85 pulls 34.78A because reactive current is added on top of the real power. Three-phase at the same voltage needs only 20.08A per line since the same 17kW is shared across three conductors instead of one.

Circuit Type	Formula	Result
DC	17,000 ÷ 575	29.57 A
AC Single Phase (PF 0.85)	17,000 ÷ (0.85 × 575)	34.78 A
AC Three Phase (PF 0.85)	17,000 ÷ (1.732 × 0.85 × 575)	20.08 A

Other kW Values at 575V

kW	AC 3-Phase per line, PF 0.85	AC 1-Phase PF 0.85
3 kW	3.54 A	6.14 A
3.5 kW	4.13 A	7.16 A
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

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 17 kW at 24V = 708.33A (DC) electrical_services 17 kW at 120V = 166.67A (1-phase) electrical_services 17 kW at 208V = 55.51A (3-phase) electrical_services 17 kW at 220V = 90.91A (1-phase) electrical_services 17 kW at 230V = 86.96A (1-phase) electrical_services 17 kW at 240V = 83.33A (1-phase) electrical_services 17 kW at 400V = 28.87A (3-phase) electrical_services 17 kW at 460V = 25.1A (3-phase) electrical_services 17 kW at 480V = 24.06A (3-phase)

Related Calculations

bolt 17,000W to amps at 575V payments 17,000W running cost cable Wire size for 20.08A at 575V (3Φ)

Frequently Asked Questions

How many amps is 17 kW at 575V?expand_more

17 kW at 575V draws about 20.08 amps on an AC three-phase circuit at PF 0.85. Alternate cases at the same voltage: 29.57A on DC, 34.78A on AC single-phase.

How does three-phase affect the amps for 17 kW?expand_more

Three-phase at 575V draws 20.08A per line versus 34.78A single-phase. Less current per conductor means smaller wire and lower I²R losses.

How many amps does a 17 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, 17 kW works out to about 20.08A 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 17 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 17 kW in watts?expand_more

17 kW equals 17,000 watts. Multiply kilowatts by 1000.

Why do industrial systems use kW instead of watts?expand_more

Industrial equipment operates at higher power levels. 17 kW is easier to express than 17,000W. The math is identical, just scaled by 1000.

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.