How Many Amps Is 15 kW at 24V?

15 kilowatts at 24V works out to roughly 624.96 amps on DC at PF 0.85. That is typical for solar arrays, battery banks, and DC industrial equipment. See the DC and alternate-phase numbers below for other circuit types.

15 kW at 24V, DC (PF 0.85)

624.96 Amps

15 kilowatts at 24V on DC ≈ 624.96 amps

AC Single Phase (PF 0.85)735.25 A

Try: 15kW at 24V 12kW at 24V 18kW at 24V 10kW at 24V

Volts

Amps (DC)

624.96

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 15 ÷ 24 = 14,999 ÷ 24 = 624.96 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

14,999 ÷ (0.85 × 24) = 14,999 ÷ 20.4 = 735.25 A

Equipment & Circuit Sizing

Energy Cost

15 kW costs $2.55/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (DC)

How the line current for 15 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	15 kW at 24V (DC)
Resistive (heaters, incandescent)	1	624.96 A
Fluorescent lamps	0.95	624.96 A
LED lighting	0.9	624.96 A
Synchronous motors	0.9	624.96 A
Typical mixed loads	0.85	624.96 A
Induction motors (full load)	0.8	624.96 A
Computers (without PFC)	0.65	624.96 A
Induction motors (no load)	0.35	624.96 A

AC Conversion Comparison

On DC, 15kW at 24V draws 624.96A. AC single-phase at PF 0.85 pulls 735.25A because reactive current is added on top of the real power.

Circuit Type	Formula	Result
DC	14,999 ÷ 24	624.96 A
AC Single Phase (PF 0.85)	14,999 ÷ (0.85 × 24)	735.25 A

Other kW Values at 24V

kW	DC Amps	AC 1-Phase PF 0.85
2.5 kW	104.17 A	122.55 A
3 kW	125 A	147.06 A
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

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.

Related Calculations

bolt 14,999W to amps at 24V payments 14,999W running cost cable Wire size for 624.96A at 24V

Frequently Asked Questions

How many amps is 15 kW at 24V?expand_more

15 kW at 24V draws about 624.96 amps on DC. Alternate cases at the same voltage: 735.25A on AC single-phase.

What is 15 kW in watts?expand_more

15 kW equals 14,999 watts. Multiply kilowatts by 1000.

Is 15 kW single-phase or three-phase?expand_more

15 kW is available in both, but three-phase is more common for commercial HVAC, rooftop units, and motors once you reach this range.

How does power factor affect the amps for 15 kW at 24V?expand_more

On AC single-phase, current scales inversely with power factor. At PF 1.0 (pure resistive, like a heater), 15 kW at 24V draws 624.96A. At PF 0.80 (typical induction motor), the same real power draws 781.2A. The extra current is reactive and does no real work, but still flows through the wire and the breaker.

How many amps does a 15 kW EV charger draw at 24V?expand_more

At 24V, this is Level 1 territory (120V AC, single-phase, typically 12-16A). A 15 kW draw on a standard 120V household outlet is at or above the 1,440W NEC 210.19(A) continuous figure, which is why Level 1 EVSE ships at 1.4-1.9 kW and takes 20+ hours for a full charge. If you need 15 kW of charging, you want Level 2 on a 240V dedicated circuit, not 120V.

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.