Welchen NIV Kurs muss ich als Hauswart besuchen, wenn ich elektrische Anschlüsse auswechseln will?
Which NIV course do I have to attend as a janitor if I want to replace electrical connections?
Janitors, janitors, service technicians, fitters and maintenance personnel who wish to replace or connect permanently installed electrical products require a permit in accordance with Article NIV 15.
