What UL Rating Is Preferred for a Surge Suppressor

question 95

Multiple Choice

What UL rating is preferred for a surge suppressor?

• A)UL497A
• B)UL1497A
• C)UL1449
• D)1750 joules

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Definitions:

Active Channel

The portion of a river or stream that is currently used for the flow of water, often subject to frequent changes in course and volume.

Thunderstorms

Violent weather phenomena characterized by the presence of lightning and thunder, often accompanied by heavy rainfall.

Snowmelt

The process of snow changing into water due to rising temperatures, an important source of fresh water in many regions and a factor in flood generation.

Persistent

Enduring or continuing for a long while, not easily dispelled or removed.