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Wire size for a 15 KVA transformer?

Anonymous

∙ 12y ago

Updated: 8/9/2023

Primary : 4

Secondary : 3/0

<<>>

To answer this question correctly a voltage must be stated.

Wiki User

∙ 13y ago

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More answers

Depends on the voltage. If it is a 460v transformer that is 32 amps. So you could use #8 AWG.

According to BSS 2006 you can use 10 mm Cable

Wiki User

∙ 12y ago

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How many output amps is a 75 kva transformer?

For single phase, KVA = (line to ground) * (phase current). A 75kVA 480 to 208Y/120 volt transformer is a fairly common transformer. I assume this is the type of transformer you are referring to. 75k / 120 = 625 Amps. As an FYI, the 208Y voltage is the line to line voltage, which is equal to (phase 1) - (phase 2), where the phases are separated by 120 degrees, thus (phase 1) * 1.732 For three phase, kVA = (line to line voltage) * (phase current) *(sqrt 3), 75k / 208 / 1.732 = 208 Amps.

What is the voltage across the secondary with a 15 VAC input The transformer has 600 turns in the primary windings and 200 turns in the secondary?

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Transformers can be used in either step-up mode or step down mode, they are just as efficent connected either way. Most large transformers have percentage "taps" to allow voltage corrections up or down by about 15%.

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W8*15 size profile convert to mm

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