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 . . . .
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 . . . .
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 . . . .