This chart is simply a calculation of how many amps the generator generates when it is running; many factors can raise (or) lower the amount.

KVA/KW Ampere Conversion Chart

This chart calculates a generator’s output amperage depending on its operational power and voltage.

Please keep considering that this table is only an estimate of how many amps a generator produces while in operation and is not an accurate representation owing to different factors that can cause this amount to increase or decrease.

Understanding kW, kVA and Current

Kilowatt (kW) is real or active power. Kilovolt-ampere (kVA) is apparent power. Ampere (A) is electric current. These are different electrical quantities and must not be used interchangeably.

•  kW describes the rate of real energy transfer to a load.
•  kVA describes apparent power in an AC system and is commonly used for generator and transformer capacity ratings.
•  A describes current flowing in a conductor.
•  Current is determined by apparent power and voltage for a specified phase configuration.

80% Power Factor

KVA	KW	220 V	240 V	380 V	400 V	440 V	450 V	600 V	2400 V	3300 V	4160 V
8 KVA	6 KW	17V	15V	10V	9V	8V	8V	6V
9 KVA	8 KW	25V	23V	14V	14V	12V	12V	9V
13 KVA	10 KW	33V	30V	19V	18V	17V	16V	12V
19 KVA	15 KW	50V	45V	29V	27V	25V	24V	18V
25 KVA	20 KW	66V	60V	38V	36V	33V	30V	6V	4V	4V
31 KVA	25 KW	83V	76V	48V	46V	42V	41V	30V	8V	6V	4V
38 KVA	30 KW	99V	90V	58V	55V	50V	49V	36V	9V	7V	5V
50 KVA	40 KW	132V	120V	77V	73V	67V	65V	48V	12V	9V	7V
63 KVA	50 KW	165V	152V	96V	91V	83V	81V	61V	15V	11V	9V
75 KVA	60 KW	198V	181V	115V	109V	100V	98V	72V	18V	13V	11V
94 KVA	75 KW	247V	226V	143V	136V	123V	120V	90V	23V	16V	13V
100 KVA	80 KW	264V	240V	154V	146V	133V	130V	96V	21V	18V	14V
125 KVA	100 KW	330V	301V	192V	182V	166V	162V	120V	30V	22V	18V
156 KVA	125 KW	413V	375V	240V	228V	208V	204V	150V	38V	27V	22V
187 KVA	150 KW	495V	450V	288V	273V	249V	244V	180V	45V	33V	26V
219 KVA	175 KW	577V	527V	335V	318V	289V	283V	211V	53V	38V	31V
250 KVA	200 KW	660V	601V	384V	364V	332V	324V	241V	60V	44V	35V
312 KVA	250 KW	825V	751V	480V	455V	415V	405V	300V	75V	55V	43V
375 KVA	300 KW	990V	903V	576V	546V	498V	487V	361V	90V	66V	52V
438 KVA	350 KW	1155V	1053V	672V	637V	581V	568V	422V	105V	77V	61V
500 KVA	400 KW	1320V	1203V	770V	730V	665V	650V	481V	120V	88V	69V
625 KVA	500 KW	1650V	1504V	960V	910V	830V	810V	602V	150V	109V	87V
750 KVA	600 KW	1980V	1803V	1150V	1090V	996V	975V	721V	180V	131V	104V
875 KVA	700 KW	2310V	2104V	1344V	1274V	1162V	1136V	842V	210V	153V	121V
1000 KVA	800 KW	2640V	2405V	1540V	1460V	1330V	1300V	962V	241V	176V	139V
1125 KVA	900 KW	2970V	2709V	1730V	1640V	1495V	1460V	1082V	271V	197V	156V
1250 KVA	1000 KW	3300V	3009V	1920V	1820V	1660V	1620V	1202V	301V	218V	174V
1563 KVA	1250 KW	4130V	3765V	2400V	2280V	2080V	2040V	1503V	376V	273V	218V
1875 KVA	1500 KW	4950V	4520V	2880V	2730V	2490V	2440V	1805V	452V	327V	261V
2188 KVA	1750 KW		5280V	3350V	3180V	2890V	2830V	2106V	528V	380V	304V
2500 KVA	2000 KW		6020V	3840V	3640V	3320V	3240V	2405V	602V	436V	348V
2812 KVA	2250 KW		6780V	4320V	4095V	3735V	3645V	2710V	678V	491V

In simple terms, kW is the amount of power an electrical device generates, and kVA is the amount of current it consumes.

Kilowatts (kW)

In the metric system, one kilowatt is equivalent to 1,000 watts. It refers to the real power generated by a machine, such as an engine (or) a gas generator.

Kilovolt-Ampere (kVA)

This measurement is more commonly used outside of the United States. It shows the apparent power generated, which is the amount of power used by the system.

• In a direct current (DC) system, the 2 numbers are the same.
• In alternating current (AC) systems, the current can become out of phase with the voltage, reducing system efficiency. In such circumstances, you’ll use less electricity than you’re generating.

Phase Amperes Explanation

Generators (sometimes known as gensets or “generator sets”) are classified into two types: single-phase & three-phase devices.

Single-Phase AC Generators

Single-phase AC generators are often utilized when you don’t require a lot of electricity and don’t want a generator that operates constantly. They work between 120 and 240 volts. They’re suitable for domestic use, so if you require a generator for the house, they can deliver efficient and cost-effective power.

To compute the generator’s kVA for a single-phase current, multiply volts by amps and divide by 1000.

To calculate kW, multiply volts x amps by the power factor (PF), which is the ratio of actual power flowing to perceived power, and divide by 1000.

Three-Phase AC Generators

Three-phase currents provide alternating current power and normally run at a much greater voltage, around 480 volts. With single-phase generators, they generate power in three waves, resulting in continuous output. Commercial generators are typically utilized for heavy-duty applications, such as powering industrial & agricultural projects & operations.

To determine the kVA of a 3-phase system generator, multiply volts x amps by 1.73, then divide by 1,000.

To compute kW, multiply volts x amps x 1.73 x PF (the ratio of actual power flowing to perceived power) and divide by 1000.

Click here for kW to Amps Calculator

Click here for kVA to Amps Calculator

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Solved Examples

Example 1: Three-phase 100 kVA generator at 400 V

I = (100 × 1000) ÷ (√3 × 400)

I = 144.3 A (approximately)

A balanced three-phase 100 kVA generator operating at 400 V line-to-line has a theoretical rated line current of approximately 144 A.

Example 2: Single-phase 10 kVA generator at 230 V

I = (10 × 1000) ÷ 230 = 43.5 A

A single-phase 10 kVA generator at 230 V has a theoretical rated current of approximately 43.5 A.

Example 3: 100 kVA at PF 0.8

kW = 100 × 0.8 = 80 kW

A 100 kVA load operating at PF 0.8 corresponds to 80 kW of real power. Its current at a specified voltage is calculated from kVA and voltage, not by multiplying the kVA current by the power factor.