My answers often involve reference to copyrighted standards, such as IEC standards, Australian Standards, etc.
I am generally happy to excerpt small parts of those standards here - a couple of paragraphs or a small table. For anything more, I paraphrase.
The idea is that my answers should give an idea of what to expect to find in the standard, should the reader buy the full document. This way, the person reading the answer has some useful information, but would still have to buy the standard to get the full details required for professional work, so the standards publisher has not lost any revenue.
In the particular case of your NEMA Type 1 enclosure question, I might answer by paraphrasing the highlights of the relevant standard:
NEMA Type 1 enclosures are tested to NEMA 12345. The tests involve probing the enclosure with a standard-sized rod, which simulates a human finger. Further tests include spraying water on the enclosure, from various angles and various spray pressures, to test if the enclosure is weatherproof. For full details of the testing procedure, you should consult NEMA 12345.
This isn't enough detail that you no longer need to buy the standard (depriving the publisher of revenue). Particularly, it doesn't include enough information about specific dimensions, spray pressures, test procedures, etc. for you to go out and do the tests. However, it is useful confirmation that this is the standard you need to look at, and if you buy it, it will answer your questions.
You get the confidence that the money you spend on the standard won't be wasted, and the publisher gets some free advertising. Everyone wins.