What is a primary hazard associated with autotransformers?

The primary hazard associated with autotransformers is the potential to ground on the secondary side. Autotransformers operate by utilizing a single winding for both primary and secondary voltages, which means there is no complete electrical isolation between the input and output. This lack of isolation can create a safety concern, especially if there is an issue on the secondary side that could lead to unintended grounding.

If a fault occurs on the secondary side and creates a ground potential, it can be dangerous to anyone interacting with the equipment. Ground faults in systems lacking isolation could create shock hazards or equipment damage. Understanding this risk is essential for ensuring safe operation and maintenance of electrical systems that utilize autotransformers. Proper grounding practices and safety procedures should always be followed to mitigate these risks.