New York State Master Electrician Practice Exam 2025 - Free Electrician Practice Questions and Study Guide

Question: 1 / 400

At what voltage must motors and controllers be guarded against accidental contact?

25 Volts

35 Volts

50 Volts

Motors and controllers must be guarded against accidental contact at voltages above 50 Volts. This standard is in place to ensure safety, as contact with electrical equipment at higher voltages can lead to serious injury or fatality. The National Electrical Code (NEC) and related safety standards define this threshold to prompt appropriate protective measures, including barriers, enclosures, and insulation, to minimize the risk of electrical shock.

At voltages above this threshold, the likelihood of a hazardous condition increases, making it critical for electricians and electrical engineers to implement necessary safety protocols. Therefore, the specification of 50 Volts as the must-guard threshold underscores the importance of adhering to safety practices in electrical installations and maintenance.

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60 Volts

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