What is the maximum current draw for a 120V x 24V step down transformer rated at 40 VA?

To determine the maximum current draw for a step-down transformer rated at 40 VA (volt-amperes) with a secondary voltage of 24V, we can use the formula for current, which is derived from the relationship between power (VA), voltage, and current:

Current (I) = Power (VA) / Voltage (V)

In this case, the secondary side voltage is 24V, and the power rating is 40 VA. Plugging these values into the formula gives:

I = 40 VA / 24 V = 1.67 A

This rounds to approximately 1.7 amps, making it the correct value for the maximum current draw from the secondary side of the transformer.

Understanding this calculation is crucial because it reflects how electrical devices like transformers work, and it helps in sizing conductors and circuit protection for the appropriate current levels. Knowing the maximum current is vital for safety and efficiency in electrical services and installations.