#### captainbeefheart

##### Senior Member

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- Apr 18, 2022

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How is level of power possible, given the limitations of a typical home outlet at 115 V and 20 amps, or max VA of 1840 VA (115 * 20 * 0.8) ? 1200 watts delivered to the speaker would require 1200/1840 = 65% efficiency.

Does this amp take a 230 V outlet or a 30-40 amp breaker?

Wattage is wattage, it always stays the same:

Watts = I * V

Since you have 20 amps at 60v rms which is 1200 watts convert to house voltage on the primary of the power transformer:

1200 = 120 * x

Solve for x

1200 / 120 = 10

Your outlet only needs 10 amps. The average house branch circuit is 15 amps so you are fine. Have a look at the fuse rating on the amp and see what it is.