What is a potential consequence of an ungrounded electrical system?

Prepare for the MTA Transit Electrical Helper Exam with flashcards and multiple-choice questions. Hints and explanations accompany each question. Get ready for your exam!

An ungrounded electrical system presents significant risks, particularly in the context of electrical shock hazards. In such systems, there is no direct path to ground for electrical faults, which leads to situations where energized parts of the system may not be adequately protected. This can result in higher voltages appearing on exposed surfaces, creating a dangerous environment for anyone who comes into contact with the system.

In contrast, a grounded system offers a fail-safe, directing excess current safely into the ground, thus reducing the risk of electrical shock. The potential for higher voltage exposure in ungrounded systems elevates the risks for workers and equipment alike, making it imperative to address grounding correctly in electrical installations to ensure safety and reliability.

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