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im have a 30 kva transformer 3 phase 480v 80 amp panel 120v what size disconnect should I use

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Q: Can you use a 30 amp disconnect switch for a 30 kva transformer?
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Can you use 20 kva transformer in a home?

Yes you could use a 20 kva transformer in a home. Stymied as to why it would be done though. You would need at least a 100 amp service to the home to energize the transformer. Primary side of the transformer would draw 83 amps at 240 volts. If the question was to supply the home, again yes. It would be 100 amp service equipment that the transformer would feed into.


What is the difference between a 1.5KVA and a 3KVA transformer?

The 3 kVA transformer will weigh double the 1.5 kVA transformer.


What is the KVA rating required of the testing transformer?

Depends on the kva rating of the devices to be tested using a transformer.


How do you earth in the 1600 kva transformer?

In 1600 kva transformer we provide NGR (Neutral grounding resistance)


What would the input current be for a 275 kva transformer with 2 phase of a 480 vac in and 120 vac at 20 amp output?

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How many 240 volt 4.9 amp draw lights can be run on a 15 kva 2 phase transformer?

The lamp uses 240 x 4.9 VA, that is 1176 VA, so a 15 kVA transformer, which is 15,000 VA, could feed 12 lamps.


Why you are indicating capacity of transformer in KVA?

transformer action doesn't depend on power factor that is why we indicate its rating in KVA


What is the result when 3 kva power requirement is being supplied by 250 kva transformer?

The result is that the transformer runs cool and contented. The '250 KVA' rating on the transformer is its maximum ability to transfer power from its input to its output without overheating, NOT an amount of power always running through it. If the 3 KVA load happens to be the only thing connected to the transformer at the time, then only 3 KVA flows into the transformer from the primary line, and only 3 KVA leaves the transformer secondary.


How do you Convert va to kva?

a kva is 1000 vaK is kilo, which means 1000 similar to how a kilometer is 1000 metersTransformers are usually rated in KVA, so a 45 KVA Transformer is a 45 000 VA Transformer


Cost of 630 kva transformer in rupees?

cost of 630kVA transformer


480 transformer to 120 ac current what is the kva on transfomer?

The kVA rating will be listed on the transformer's nameplate, which is usually on the front of the transformer. The 480v to 120v is irrelevant, because many transformers with different kVA ratings convert 480 volts to 120 volts. The kVA ratings can be different and thus affect the rated current through the transformer.


Do the load carried by a transformer is affected by KVA rating?

yah! definately affects, the kva of transformer is suitable for the certain load according to the rating.