What is an acceptable reading when conducting an AC voltage test?

In the context of an AC voltage test, an acceptable reading typically aligns with standard residential or commercial voltage levels. The reading of 120 VAC is commonly used across many regions, particularly in North America, for residential power supply. This means that a reading of 120 VAC would generally indicate that a device or outlet is operating within the expected and safe voltage range for typical household appliances and equipment.

Understanding voltage levels is crucial for ensuring the safety and functionality of electrical systems. Both 60 VAC and 30 VAC readings fall below the standard levels typically required for most household devices, which would indicate either a malfunction or an unsafe condition. Conversely, while a reading of 240 VAC can be standard in certain applications (such as larger appliances like dryers or ovens), it is not generally the expected voltage for typical household circuits, which reaffirms that 120 VAC is indeed the more widely acceptable reading for standard testing.