g.mccormick
Lifetime Supporting Member
One question I have is where is the arc flash potential coming from? Is it the drive itself? There are a lot of drives that are available in NEMA4/12/etc. These are typically placed outside of an enclosure on the wall or unistrut. The NEMA ratings does not change the arc flash potential correct? So you would think that a NEMA12 drive on the wall would pose a larger arc flash potential than a NEMA1 drive inside of a panel with a PLC.
Or is the arc flash only considered when "working" on the enclosure?
Or is the arc flash only considered when "working" on the enclosure?