What size transformer do I need for a 100 amp panel?
It’s very common to see a 100 amp breaker in a 480 panel feeding a 75 KVA transformer and a 225 amp main in the 120/208 panel.
What size transformer do you need for a 200 amp panel?
A single 50 kVA transformer would supply a 200 ampere residential service, NOT a 400 ampere service.
How do I work out what size transformer I need?
Since you know kVA = V * l / 1,000, we can solve for V to get V = kVA * 1,000 / l. So you’ll multiply your kVA rating by 1,000 and then divide by the amperage. If your transformer has a kVA rating of 75 and your amperage is 312.5, you’ll plug those numbers into the equation — 75 * 1,000 / 312.5 = 240 volts.
How much load can a 50 kVA transformer handle?
Three Phase Transformer
What size breaker feeds a 45 kVA transformer?
For a 45kVA transformer, 125A×1.25=156A, so use a 175A protection device.
What size 110v transformer do I need?
The closest 110v transformer would be a 1.5 kVA, but, as mentioned above, I would go for a 2 kVA at least because the maximum ratings are for intermittent use (ie. power tools, sprayers, etc.) and 1.35 is a bit close to the maximum.
How many houses can a 50 kVA transformer supply?
However, at 1500 kWHr/month or 50 kWHr/day or at 2.083 kWHr/Hr or 2.083 kVA average. but this is average. I’d say most at one time might be 5 times that or 10kVA so one 50kVA transformer could supply 5 homes.
What size breaker do I need for a 75 kva transformer?
The rated current of the transformer can be used as the basis for a breaker. The rated current of a 3 phase, 75 kva transformer is 112 Amps, which is 25% of the rated current of a 125 Amp breaker.