Probable Effect Concentration Quotients (PECQS) Practice Test 2025 - Free PECQS Practice Questions and Study Guide

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What is the minimum clearance required between bare current-carrying metal parts of different potential mounted on the same surface?

30 mm

40 mm

50 mm

The correct answer indicates that the minimum clearance required between bare current-carrying metal parts of different potential mounted on the same surface is 50 mm. This standard is set to prevent electrical arcing or short circuits that could lead to safety hazards. The distance is designed to provide sufficient separation to accommodate for possible voltage differences between the bare conductive parts.

Insufficient clearance can lead to dangerous situations, especially in environments where humidity or physical disturbances can increase the risk of electrical discharge. Moreover, adhering to this minimum requirement is crucial in maintaining reliable electrical operations and ensuring safety protocols are followed in installations where current-carrying components are in close proximity.

Awareness of the necessary clearance helps technicians and engineers design safer electrical systems, preventing potential accidents while ensuring compliance with safety standards and regulations.

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60 mm

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