Master Electrician Practice Exam 2025 – Comprehensive All-in-One Guide to Master Your Certification!

Question: 1 / 400

When is it necessary to install a surge protector?

To enhance the aesthetic of the electrical system

To protect against voltage spikes from lightning strikes or electrical surges

Installing a surge protector is primarily necessary to protect against voltage spikes that can occur due to lightning strikes or other electrical surges. These voltage spikes can cause significant damage to electrical equipment and systems, leading to malfunctions or total failure of sensitive devices such as computers, televisions, and other electronics.

Surge protectors work by diverting excess voltage away from the appliances and into the grounding system, effectively absorbing the surge and preventing it from reaching the equipment. This protective measure can save homeowners and businesses significant repair or replacement costs associated with damage from power surges.

While other options might seem relevant to electrical systems, enhancing aesthetics, improving circuit efficiency, or regulating electricity flow do not directly address the fundamental purpose of surge protectors, which is to safeguard equipment from unexpected voltage increases.

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To improve circuit efficiency

To regulate electricity flow

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