Ultimate Guide: How to Convert kVA to Amps?

When looking for solar generators, you'll undoubtedly come across different power ratings, such as watts, amps, volts, kilowatts, and kilo-volt amperes. While amps is a common term that you can see on your home appliances, kVA isn't well known outside the power generation industry. kVA or kilovolt-amp is a term you'll regularly see in the specifications of power generators and typically indicates the power output.

If the kVA of a generator is higher, it can produce more power. However, there are certain instances when you need to know the amps of the generator. In this case, kVA to amps conversion comes in handy. If you want to choose the right capacity and power of a generator, you'll need to understand both kVA and amps. Jackery Explorer Portable Power Stations have NMC or LiFePO4 batteries with high Wh, kVA, and Ah ratings. They can help you charge most essential appliances for long hours.

Products	Image	Capacity	Rated / Peak Power	Battery	Size
Explorer 3000 Pro		3024Wh	3000W (6000W Peak)	NMC	Length: 18.6 in (47.24 cm) Width: 14.1 in (35.81 cm) Height: 14.7 in (37.36 cm)
Explorer  2000 Plus		2-24 kWh	3000W (6000W Peak)	LiFePO4	Length: 14.7 in (37.36 cm) Width: 18.6 in (47.3 cm) Height: 14.1 in (35.94 cm)
Explorer 1500 Pro		1512Wh	1800W (3600W Peak)	NMC	Length: 15.12 in (38.4 cm) Width: 10.59 in (26.9 cm) Height: 12.11 in (30.75 cm)
Explorer 1000 Plus		1.25-5 kWh	2000W (4000W Peak)	LiFePO4	Length: 14 in (35.6 cm) Width: 10.24 in (26 cm) Height: 11.14 in (28.3 cm)

What Is kVA to Amps?

kVA stands for kilovolt-amperes and is used to determine the rating of an electric circuit. It is the product of maximum current and voltage rating. It is also called apparent power, which describes the total amount of power being used by a system. Generally, the higher kVA rating means the generator can produce more power.

On the other hand, amperes is the unit of the electric current that measures the flow of electrical charge through any conductor. Amp hour, derived from amps, is an essential factor that represents the total amount of charge any battery can hold or supply and directly correlates with the runtime for which a battery can power a device. Generally, the higher the Ah battery, the longer the battery runtime.

The relation between kVA and amps depends on the voltage of the circuit. For example, if you want to calculate the amps of a single-phase circuit, all you need to do is multiply kVA by 1000 and then divide the result by the volts.

Amps = [1000 × kVA] ÷  V

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How to Convert kVA to Amps?

If you want to calculate amps from kVA, you will need to know the operating voltages of the system, the circuit type (single phase, two-phase, and three-phase), and the kVA. The following diagram reveals the different kVA to amps conversion formulas.

I = Current in amps

V = Voltage

kVA = Apparent power in kilovolt-amp

V (L-L) = Line-to-Line Voltage

V (L-N) = Line to Neutral Voltage

Single-Phase kVA to Amps

The current is equal to 1000 times the kVA divided by the voltage of the circuit.

Amps = [1000 × kVA] ÷  V

For example, if the kVA of a generator is 5, the amount of electric current flowing through a 100-volt circuit will be [1000 × 5] ÷  100 = 50A.

Two-Phase kVA to Amps

The current is equal to 1000 times the kVA divided by twice the voltage of the circuit.

Amps = [1000 × kVA] ÷  [V × 2]

For example, if the voltage of a two-phase circuit is 250V and the kVA value is 10, the amperage passing through the circuit will be [1000 × 10] ÷  [250 × 2] = 20A.

Three-Phase kVA to Amps From Line to Line Voltage

For a balanced load where the current is the same in all three phases of the circuit, the current is equal to 1000 times the kVA divided by the product of 1.73 and the line-to-line voltage.

Amps = [1000 × kVA] ÷  [V (L-L) × 1.73]

Here is an example where we will find the electrical current for a 440-volt three-phase circuit with 10kVA of apparent power.

Amps = [1000 × 10] ÷  [440V × 1.73] = 13.1A

Three-Phase kVA to Amps From Line to Neutral Voltage

If you have the line to neutral voltage, the three-phase kilovolt-amp calculation is the ratio of 1000 times kVA to 3 times the voltage.

Amps = [1000 × kVA] ÷  [V (L-N) × 3]

For a given three-phase AC circuit where the line to neutral voltage is 450V and the kVA is 10, the amps can be calculated as follows:

Amps = [1000 × 10] ÷  [450V × 3] = 7.4A

The following table reveals some of the common kVA to amps conversions.

Apparent Power in kVA	Current in Amps at
	208V	220V	240V	440V	480V
1 kVA	2.78 A	2.62 A	2.41 A	1.31 A	1.2 A
2 kVA	5.55 A	5.25 A	4.81 A	2.62 A	2.41 A
3 kVA	8.33 A	7.87 A	7.22 A	3.94 A	3.61 A
4 kVA	11.1 A	10.5 A	9.62 A	5.25 A	4.81 A
5 kVA	13.88 A	13.12 A	12.03 A	6.56 A	6.01 A
6 kVA	16.65 A	15.75 A	14.43 A	7.87 A	7.22 A
7 kVA	19.43 A	18.37 A	16.84 A	9.19 A	8.42 A
8 kVA	22.21 A	20.99 A	19.25 A	10.5 A	9.62 A
9 kVA	24.98 A	23.62 A	21.65 A	11.81 A	10.83 A
10 kVA	27.76 A	26.24 A	24.06 A	13.12 A	12.03 A

Whenever you know the kVA of the power generator, you can calculate the amps with the above formula.

How to Convert Amps to kVA?

Similar to kVA to amps conversion, it is easy to convert amps to kVA with the help of simple formulas. The following diagram reveals the different formulas and relationships between amps, volts, and kilovolt-amp.

Single Phase Amps to kVA

The apparent power measured in kVA is equal to the current times the voltage divided by 1000.

kVA = (E × I) ÷ 1000

For example, if the current flowing through the single-phase circuit is 20 amps and the voltage is 240V, the apparent power in kVA will be (20A × 240V) ÷ 1000 = 4.8 kVA.

Two Phase AC Circuit Amps to kVA

If you want to convert amps to kVA for a two-phase circuit, you will need to multiply twice the amps (in I) and volts (in E) divided by 1000.

kVA = (E × I × 2) ÷ 1000

Example: The kVA of the electrical system that operates at 240V and a current of 20A can be calculated as:

kVA = (240V × 20A × 2) ÷ 1000 = 9.6 kVA

Three-Phase Amps to kVA

While the above formula is a single-phase power system, the three-phase amps to kVA conversion can be calculated as follows:

kVA = (E × I × 1.73) ÷ 1000

Example: The kVA of the three-phase electrical system that operates at 440V and a current of 20A at full load can be calculated as:

kVA = (240V × 20A × 1.73) ÷ 1000 =  8.3 kVA

Here are the common kVA to amps conversions.

Current	kVA at 220V	kVA at 240V	kVA at 260V
10 amps	2.2 kVA	2.4 kVA	2.6 kVA
20 amps	4.4 kVA	4.8 kVA	5.2 kVA
30 amps	6.6 kVA	7.2 kVA	7.8 kVA
40 amps	8.8 kVA	9.6 kVA	10.4 kVA
50 amps	11 kVA	12 kVA	13 kVA
60 amps	13.2 kVA	14.4 kVA	15.6 kVA
70 amps	15.4 kVA	16.8 kVA	18.2 kVA
80 amps	17.6 kVA	19.2 kVA	20.8 kVA
90 amps	19.8 kVA	21.6 kVA	23.4 kVA
100 amps	22 kVA	24 kVA	26 kVA

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Working Hours	Projector (100W): 25.7H   Portable Air Conditioner (1150W): 2.2H   Electric Cooker (900W): 2.8H   Television (60W): 42.8H   Microwave Oven (1160W): 2.2H	Projector (100W): 17.3H   Portable Air Conditioner (1150W): 1.5H   Electric Cooker (900W): 1.9H   Television (60W): 29H   Microwave Oven (1160W): 1.4H	Projector (100W): 12.8H   Portable Air Conditioner (1150W): 1.1H   Electric Cooker (900W): 1.4H   Television (60W): 21.4H   Microwave Oven (1160W): 1.1H	Projector (100W): 10.7H   Portable Air Conditioner (1150W): 56 min   Electric Cooker (900W): 1.2H   Television (60W): 18H   Microwave Oven (1160W): 55 min

kVA to Amps FAQs

What is 1 kVA in amps?

The value of 1 kVA will depend on the voltage and type of the circuit. For example, 1 kVA in a 120-volt single-phase circuit is equivalent to 8.33 amps, whereas in a 240-volt single-phase circuit, it is equal to 4.17 amps.

How do I convert kVA to amps?

There is no direct relation between kVA and amps. But you can convert kVA to amps if you know the voltage of the circuit and the type of phase circuit.

 Formula for the single-phase circuit:

 Current (in amps) = (1000 × kVA) ÷ V

 How many amps is a 750 kVA transformer?

Generally, a 750 kVA transformer can supply a three-phase load of around 208V with 2082A or three single-phase circuits of about 120V at 2080A each. The bigger the kVA size, the bigger the transformers it can accommodate.

 What does kVA mean on a generator?

kVA is an indication of the power output of a generator. If the kVA rating is higher, the generator will produce more power. When you multiply the voltage (or the force moving electrons around the circuit) by the amps (or the electrical output), the output is kVA. It's the apparent power of a generator, which is different from kilowatts (kW). The difference between the two (kVA and kW) is the power factor (PF). The PF for single-phase circuits is typically 1, whereas it is 0.8 for three-phase generators or transformers.

What is the difference between kVA and kW?

Even though both kVA and kW are used to represent electric power, they have some differences. kVA is the apparent power, whereas kW is the real power of any electric system. In a DC circuit, the values of both kW and kVA are equal. However, in an AC circuit, the kW is equivalent to kVA multiplied by a power factor.

Final Thoughts

Converting kVA to amps might seem complicated at first glance, but it becomes easy once you understand the common terminologies like kilovolt-amp, amps, volts, and watts. You'll need to multiply kVA with 1000 to get amps in a single-phase circuit. Once you've enough knowledge of kVA and amps, you can calculate the right size and power of the generator.

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