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kVa/kW Amperage Chart

This chart estimates the output amperage of a generator based on the operating power and voltage. Please note that this table is intended to be used as an estimate and may vary due to operational factors. Amperage is for 3 Phase at 0.8 Power Factor

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kVa	kW	208V	220V	240V	380V	400V	440V	450V	480V	600V	2400V	3300V	4160V
8	6.3	17.5	16.5	15.2	9.6	9.1	8.3	8.1	7.6	6.1
9.4	7.5	26.1	24.7	22.6	14.3	13.6	12.3	12	11.3	9.1
12.5	10	34.7	33	30.1	19.2	18.2	16.6	16.2	15.1	12
18.7	15	52	49.5	45	28.8	27.3	24.9	24.4	22.5	18
25	20	69.5	66	60.2	38.4	36.4	33.2	30.1	24	19.2	6	4.4	3.5
31.3	25	87	82.5	75.5	48	45.5	41.5	40.5	37.8	30	7.5	5.5	4.4
37.5	30	104	99	90.3	57.6	54.6	49.8	48.7	45.2	36	9.1	6.6	5.2
50	40	139	132	120	77	73	66.5	65	60	48	12.1	8.8	7
62.5	50	173	165	152	96	91	83	81	76	61	15.1	10.9	8.7
75	60	208	198	181	115	109	99.6	97.5	91	72	18.1	13.1	10.5
93.8	75	261	247	226	143	136	123	120	113	90	22.6	16.4	13
100	80	278	264	240	154	146	133	130	120	96	21.1	17.6	13.9
125	100	347	330	301	192	182	166	162	150	120	30	21.8	17.5
156	125	433	413	375	240	228	208	204	188	150	38	27.3	22
187	150	520	495	450	288	273	249	244	225	180	45	33	26
219	175	608	577	527	335	318	289	283	264	211	53	38	31
250	200	694	660	601	384	364	332	324	301	241	60	44	35
312	250	866	825	751	480	455	415	405	376	300	75	55	43
312	250	866	825	751	480	455	415	405	376	300	75	55	43
375	300	1040	990	903	576	546	498	487	451	361	90	66	52
438	350	1220	1155	1053	672	637	581	568	527	422	105	77	61
500	400	1390	1320	1203	770	730	665	650	602	481	120	88	69
625	500	1735	1650	1504	960	910	830	810	752	602	150	109	87
750	600	2080	1980	1803	1150	1090	996	975	902	721	180	131	104
875	700	2430	2310	2104	1344	1274	1162	1136	1052	842	210	153	121
1000	800	2780	2640	2405	1540	1460	1330	1300	1203	962	241	176	139
1125	900	3120	2970	2709	1730	1640	1495	1460	1354	1082	271	197	156
1250	1000	3470	3300	3009	1920	1820	1660	1620	1504	1202	301	218	174
1563	1250	4350	4130	3765	2400	2280	2080	2040	1885	1503	376	273	218
1875	1500	5205	4950	4520	2880	2730	2490	2440	2260	1805	452	327	261
2188	1750	6020	5770	5280	3350	3180	2890	2830	2640	2106	528	380	304
2500	2000	6780	6520	6020	3840	3640	3320	3240	3015	2405	602	436	348
2812	2250	7530	7260	6780	4320	4095	3735	3645	3400	2710	678	491	392

Understanding kVA and Amperage for Industrial and Commercial Generators

When you’re running a business—be it a bustling factory or a busy office—reliable power isn’t just a luxury, it’s a necessity. Picking the right generator means digging into some electrical basics: kVA and amperage. These terms might sound like jargon, but they’re the backbone of ensuring your operations stay up and running.

What is kVA?

kVA stands for kilovolt-amperes, a measure of apparent power. It’s the total power a generator can supply, covering both the energy that runs your equipment (real power) and the energy that keeps the system stable (reactive power). Picture it like a delivery truck: kVA is the truck’s full capacity, loaded with everything you need to keep the wheels turning. For industrial and commercial users, knowing a generator’s kVA rating helps you match it to your power demands—whether you’re powering heavy machinery or an entire office building.

What is Amperage?

Amperage, measured in amps, is the flow of electricity through your system—think of it as the current rushing through a river. Too much current, and your wires could overheat or breakers could trip; too little, and your equipment starves for power. For generator users, amperage tells you how much electrical load your setup can handle safely, ensuring everything from conveyor belts to lighting systems runs without a hitch.

Why Do They Matter for Your Business?

For industrial and commercial generator users, kVA and amperage aren’t just numbers—they’re the key to keeping your business humming. Here’s why:

Sizing Your Generator Right: Your kVA rating guides you to a generator that can handle your total power needs. Undersize it, and you’re risking outages during peak demand—like a factory grinding to a halt mid-shift. Oversize it, and you’re burning cash on excess capacity you don’t need.
Keeping Loads in Check: Amperage lets you monitor current flow to avoid overloading circuits. This is critical in settings with high-stakes equipment—imagine a hospital losing power or a warehouse facing a fire hazard from overheated wiring.
Boosting Efficiency: The relationship between kVA and amperage ties into your power factor (real power divided by apparent power). A strong power factor means you’re squeezing every drop of efficiency from your generator, cutting fuel costs and wear over time.
Meeting Standards: Industrial and commercial sites often face strict electrical codes. Understanding kVA and amperage keeps you compliant, dodging fines and ensuring a safe workplace.
Saving Money: Matching your generator to your kVA and amperage needs avoids overbuying or underperforming units, trimming fuel and maintenance bills in the long run.

Our kVA to Amps chart simplifies this process, letting you estimate output amperage from your generator’s kVA rating. It’s a starting point to make smarter power decisions—just keep in mind these are estimates. For spot-on sizing, a pro electrician can factor in your specific setup.

Still have questions or looking for more information?

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