How Many Amps Is 21.02 kW at 24V?

21.02 kW at 24V draws about 876 amps on an DC circuit at PF 0.85, typical for solar arrays, battery banks, and DC industrial equipment. Actual current varies with equipment power factor and duty cycle.

21.02 kW at 24V, DC (PF 0.85)

876 Amps

21.02 kilowatts at 24V on DC ≈ 876 amps

AC Single Phase (PF 0.85)1,030.59 A

Try: 22kW at 24V 20kW at 24V 18kW at 24V 25kW at 24V

Volts

Amps (DC)

876

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 21.02 ÷ 24 = 21,024 ÷ 24 = 876 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

21,024 ÷ (0.85 × 24) = 21,024 ÷ 20.4 = 1,030.59 A

Equipment & Circuit Sizing

Energy Cost

21.02 kW costs $3.57/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (DC)

How the line current for 21.02 kW at 24V changes with load power factor, on the same DC circuit basis the rest of the page uses. DC has no power factor; PF 1.0 represents resistive AC loads.

Load Type	PF	21.02 kW at 24V (DC)
Resistive (heaters, incandescent)	1	876 A
Fluorescent lamps	0.95	876 A
LED lighting	0.9	876 A
Synchronous motors	0.9	876 A
Typical mixed loads	0.85	876 A
Induction motors (full load)	0.8	876 A
Computers (without PFC)	0.65	876 A
Induction motors (no load)	0.35	876 A

AC Conversion Comparison

On DC, 21.02kW at 24V draws 876A. AC single-phase at PF 0.85 pulls 1,030.59A because reactive current is added on top of the real power.

Circuit Type	Formula	Result
DC	21,024 ÷ 24	876 A
AC Single Phase (PF 0.85)	21,024 ÷ (0.85 × 24)	1,030.59 A

Other kW Values at 24V

kW	DC Amps	AC 1-Phase PF 0.85
3.5 kW	145.83 A	171.57 A
4 kW	166.67 A	196.08 A
5 kW	208.33 A	245.1 A
6 kW	250 A	294.12 A
7.5 kW	312.5 A	367.65 A
8 kW	333.33 A	392.16 A
10 kW	416.67 A	490.2 A
12 kW	500 A	588.24 A
15 kW	625 A	735.29 A
18 kW	750 A	882.35 A
20 kW	833.33 A	980.39 A
22 kW	916.67 A	1,078.43 A
25 kW	1,041.67 A	1,225.49 A
30 kW	1,250 A	1,470.59 A
35 kW	1,458.33 A	1,715.69 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 21.02 kW at 208V = 68.66A (3-phase) electrical_services 21.02 kW at 220V = 112.43A (1-phase) electrical_services 21.02 kW at 230V = 107.54A (1-phase) electrical_services 21.02 kW at 240V = 103.06A (1-phase) electrical_services 21.02 kW at 400V = 35.7A (3-phase) electrical_services 21.02 kW at 460V = 31.04A (3-phase) electrical_services 21.02 kW at 480V = 29.75A (3-phase) electrical_services 21.02 kW at 575V = 24.84A (3-phase)

Related Calculations

bolt 21,024W to amps at 24V payments 21,024W running cost cable Wire size for 876A at 24V

Frequently Asked Questions

How many amps is 21.02 kW at 24V?expand_more

21.02 kW at 24V draws about 876 amps on DC. Alternate cases at the same voltage: 1,030.59A on AC single-phase.

What size breaker would I need for 21.02 kW at 24V?expand_more

This is a sizing question, not a conversion question, and there is no single correct answer from a page like this. Breaker selection depends on the equipment nameplate FLA, whether the load is continuous (NEC 210.19(A) applies the 125% continuous-load rule), the conductor ampacity and temperature rating, any NEC 430/440 motor or HVAC provisions, and local code interpretation. Use the nameplate and a licensed electrician for the real install value; use this page only for the current-draw estimate that feeds into that process.

What is 21.02 kW in watts?expand_more

21.02 kW equals 21,024 watts. Multiply kilowatts by 1000.

Is 21.02 kW single-phase or three-phase?expand_more

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

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).

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.