“Redundant” means having a second source of power or piece of equipment that acts as a backup in case the first fails to operate properly. . . .
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Tag: class 1e
A quick note about cable flame test requirements
Here’s one that can trip you up if you aren’t aware of an NRC-published update. It’s about testing cables to the correct flame-spread standard. But the correct standard has become obsolete . . . .
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The environmental qualification testing standards endorsed by the NRC
What does it take for a piece of electrical equipment to meet environmental qualification requirements? The test battery is rigorous. Here are the testing standards . . . .
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Environmental Qualification
Environmental qualification has to do with Class 1E equipment installed in a harsh environment. But it may not be as intuitive as it at first appears . . . .
The term “Class 1E” explained
This is a critical term that electrical engineers must know. It’s closely linked to the term “safety-related”. But there’s a critical distinction that many engineers overlook, especially if they are inexperienced . . . .
The definition of “safety-related” explained
Two terms you must become familiar with overnight are “Safety-Related” and “Class 1E.” In this post I focus on safety-related . . . .
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