What are Electrical Measurement Categories (CAT III, Cat IV, etc)?

[ptradmin]

When shopping for electrical test & measurement tools you will often come across category designations from I - IV. These can be confusing, or lead you to think that you need to look for a certain category, or that one s better than another. In terms of application, that might be correct. Overall, these designate particular uses and ratings for electrical test & measurement tools, and so we decided to put together this article to clear up any confusion and put it all into layman's terms.

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