What is the amp rating for a 208 Volt 100 VA transformer?

Answer 1

Is 120 V the primary or secondary voltage? If the primary (input) voltage is 120, then at full load the transformer will draw about 0.42 A from the line, and the current delivered to the load depends on the secondary (output) voltage. If the secondary (output) voltage is 120, then at full load the transformer will deliver about 0.42 A to the load, and the current drawn fom the line depends on the primary (input) voltage. amps = watts / volts So, for instance, if your transformer has a 120 V primary, and a 24 V secondary, as you might find in your AC unit or furnace: Primary current (at full load) - A = W / V A = 50 / 120 A = 0.4166 Secondary current - A = 50 / 24 A = 2.08

Answer 2

On a 100VA transformer the current draw on the 208 volt side will be .48 amps. The formula used is 100VA = 208 volts x amps. Amps = 100/208 = .48. This is for a single phase transformer. This size transformer is usually used in small motor control panels.

Answer 3

A = W/V. VA = A x V. I = VA/V.

Too little information is available to provide an answer.

Number of windings, material of the windings, the frequency of the current, the loading in OHM of the seondary winding, the cross section of the windings, the hysteresis, all contribute to the efficiency and power rating.

Answer 4

Since Power or watts is P= VA

40va is same as 40 watts.

That means P/V = A (amp rating)

So 40VA / 24V = 1.67 Amps

Answer 5

Divide its V.A (not 'va') rating by the rated secondary voltage to find the rated secondary current, and by the rated primary voltage to find the rated primary current.

Answer 6

To find this answer divide 12 by 120 volts. This will give you the amperage.