How Many Amps Is 429 kW at 460V?

At 460V, 429 kW pulls approximately 633.46 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.

429 kW at 460V, AC three-phase (PF 0.85)

633.46 Amps

429 kilowatts at 460V on AC three-phase ≈ 633.46 amps

AC Single Phase (PF 0.85)1,097.19 A

DC (ideal baseline)932.61 A

Try: 200kW at 460V 150kW at 460V 125kW at 460V 100kW at 460V

Volts

Amps (AC three-phase, PF 0.85)

633.46

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 429 ÷ 460 = 429,000 ÷ 460 = 932.61 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

429,000 ÷ (0.85 × 460) = 429,000 ÷ 391 = 1,097.19 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

429,000 ÷ (1.732 × 0.85 × 460) = 429,000 ÷ 677.21 = 633.46 A

Equipment & Circuit Sizing

Energy Cost

429 kW costs $72.93/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (AC three-phase)

How the line current for 429 kW at 460V 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	429 kW at 460V (AC three-phase)
Resistive (heaters, incandescent)	1	538.44 A
Fluorescent lamps	0.95	566.78 A
LED lighting	0.9	598.27 A
Synchronous motors	0.9	598.27 A
Typical mixed loads	0.85	633.46 A
Induction motors (full load)	0.8	673.05 A
Computers (without PFC)	0.65	828.37 A
Induction motors (no load)	0.35	1,538.41 A

AC Conversion Comparison

On DC, 429kW at 460V draws 932.61A. AC single-phase at PF 0.85 pulls 1,097.19A because reactive current is added on top of the real power. Three-phase at the same voltage needs only 633.46A per line since the same 429kW is shared across three conductors instead of one.

Circuit Type	Formula	Result
DC	429,000 ÷ 460	932.61 A
AC Single Phase (PF 0.85)	429,000 ÷ (0.85 × 460)	1,097.19 A
AC Three Phase (PF 0.85)	429,000 ÷ (1.732 × 0.85 × 460)	633.46 A

Other kW Values at 460V

kW	AC 3-Phase per line, PF 0.85	AC 1-Phase PF 0.85
15 kW	22.15 A	38.36 A
18 kW	26.58 A	46.04 A
20 kW	29.53 A	51.15 A
22 kW	32.49 A	56.27 A
25 kW	36.91 A	63.94 A
30 kW	44.3 A	76.73 A
35 kW	51.68 A	89.51 A
40 kW	59.06 A	102.3 A
50 kW	73.83 A	127.88 A
60 kW	88.6 A	153.45 A
75 kW	110.74 A	191.82 A
100 kW	147.66 A	255.75 A
125 kW	184.57 A	319.69 A
150 kW	221.49 A	383.63 A
200 kW	295.32 A	511.51 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 429 kW at 208V = 1,400.92A (3-phase) electrical_services 429 kW at 400V = 728.48A (3-phase) electrical_services 429 kW at 480V = 607.07A (3-phase) electrical_services 429 kW at 575V = 506.77A (3-phase)

Related Calculations

bolt 429,000W to amps at 460V payments 429,000W running cost cable Wire size for 633.46A at 460V (3Φ)

Frequently Asked Questions

How many amps is 429 kW at 460V?expand_more

429 kW at 460V draws about 633.46 amps on an AC three-phase circuit at PF 0.85. Alternate cases at the same voltage: 932.61A on DC, 1,097.19A on AC single-phase.

What is the formula for kW to amps?expand_more

DC: Amps = (kW × 1000) ÷ Volts. AC single-phase: Amps = (kW × 1000) ÷ (Volts × PF). AC three-phase: Amps = (kW × 1000) ÷ (Volts_L-L × √3 × PF).

How much does 429 kW cost to run?expand_more

429 kW costs $72.93 per hour at $0.17/kWh (US residential average, last reviewed April 2026). At 8 hours/day that is $17,503.20 per month.

Is 429 kW single-phase or three-phase?expand_more

429 kW is typically three-phase in commercial and industrial settings.

Why do industrial systems use kW instead of watts?expand_more

Industrial equipment operates at higher power levels. 429 kW is easier to express than 429,000W. 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.