How Many Amps Is 18.42 kW at 24V?

At 24V, 18.42 kW pulls approximately 767.54 amps on DC (PF 0.85). This is the case typical for solar arrays, battery banks, and DC industrial equipment. Always verify against the equipment nameplate for actual install sizing.

18.42 kW at 24V, DC (PF 0.85)

767.54 Amps

18.42 kilowatts at 24V on DC ≈ 767.54 amps

AC Single Phase (PF 0.85)902.99 A

Try: 18kW at 24V 20kW at 24V 15kW at 24V 22kW at 24V

Volts

Amps (DC)

767.54

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 18.42 ÷ 24 = 18,421 ÷ 24 = 767.54 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

18,421 ÷ (0.85 × 24) = 18,421 ÷ 20.4 = 902.99 A

Equipment & Circuit Sizing

Energy Cost

18.42 kW costs $3.13/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (DC)

How the line current for 18.42 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	18.42 kW at 24V (DC)
Resistive (heaters, incandescent)	1	767.54 A
Fluorescent lamps	0.95	767.54 A
LED lighting	0.9	767.54 A
Synchronous motors	0.9	767.54 A
Typical mixed loads	0.85	767.54 A
Induction motors (full load)	0.8	767.54 A
Computers (without PFC)	0.65	767.54 A
Induction motors (no load)	0.35	767.54 A

AC Conversion Comparison

On DC, 18.42kW at 24V draws 767.54A. AC single-phase at PF 0.85 pulls 902.99A because reactive current is added on top of the real power.

Circuit Type	Formula	Result
DC	18,421 ÷ 24	767.54 A
AC Single Phase (PF 0.85)	18,421 ÷ (0.85 × 24)	902.99 A

Other kW Values at 24V

kW	DC Amps	AC 1-Phase PF 0.85
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
30 kW	1,250 A	1,470.59 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 18.42 kW at 208V = 60.15A (3-phase) electrical_services 18.42 kW at 220V = 98.51A (1-phase) electrical_services 18.42 kW at 230V = 94.23A (1-phase) electrical_services 18.42 kW at 240V = 90.3A (1-phase) electrical_services 18.42 kW at 400V = 31.28A (3-phase) electrical_services 18.42 kW at 460V = 27.2A (3-phase) electrical_services 18.42 kW at 480V = 26.07A (3-phase) electrical_services 18.42 kW at 575V = 21.76A (3-phase)

Related Calculations

bolt 18,421W to amps at 24V payments 18,421W running cost cable Wire size for 767.54A at 24V

Frequently Asked Questions

How many amps is 18.42 kW at 24V?expand_more

18.42 kW at 24V draws about 767.54 amps on DC. Alternate cases at the same voltage: 902.99A on AC single-phase.

How does power factor affect the amps for 18.42 kW at 24V?expand_more

On AC single-phase, current scales inversely with power factor. At PF 1.0 (pure resistive, like a heater), 18.42 kW at 24V draws 767.54A. At PF 0.80 (typical induction motor), the same real power draws 959.43A. The extra current is reactive and does no real work, but still flows through the wire and the breaker.

What is 18.42 kW in watts?expand_more

18.42 kW equals 18,421 watts. Multiply kilowatts by 1000.

How many amps does a 18.42 kW EV charger draw at 24V?expand_more

At 24V, this is Level 1 territory (120V AC, single-phase, typically 12-16A). A 18.42 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 18.42 kW of charging, you want Level 2 on a 240V dedicated circuit, not 120V.

Why do industrial systems use kW instead of watts?expand_more

Industrial equipment operates at higher power levels. 18.42 kW is easier to express than 18,421W. 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.