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CompTIA DHTI+ Practice Questions

Category - DHTI

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Which of the following defines the voltage at which a surge suppressor begins to protect the circuit?

Clamping voltage
Protection voltage
Suppressing voltage
Surge voltage

Explanation

Answer - A - Clamping voltage is the voltage at which a surge suppressor begins to protect the circuit.

Key Takeaway: It is also known as known as the let-through voltage. This voltage specifies the voltage at which the metal oxide varistors inside a protector conduct electricity to the ground line. A lower clamping voltage indicates better protection, but a shorter life expectancy.

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