Differences in fencing clothing certifications - trousers, jacket and waistcoat - 350N and 800N

Let's look at the certification of fencing clothing, what does 350N and 800N mean. Which certification is required for which types of races. What about the domestic competitions of the Czech Fencing Association and what, on the other hand, is mandatory at inter-fencing tournaments organized acepeeing to the requirements of the FIE. We will go through the basic certification division of the fencing jacket, trousers and waistcoat.