Hello Gentlemen,
I'm working on a DoD project in Romania, Deveselu, and need some help on a certain subject that has came up. We have a totaly enclosed and conditioned very large mechanical room and of course there are some motors and pumps controlled by VFD's, we have been posted a question as to what type of enclosures should be used in the mechanical room for the VFD's , NEMA 3 or NEMA 4 enclosures. As the area is conditioned and enclosed , I would expect that just a typical mounting apparatus could be applied in this scenario and nothing special would be needed but our client is requesting some more information. I am digging through code books and given our time difference it has been hard to get in contact with our supplier on the other side, any help would be great, thanks in advance.