Hi all,
I was wondering if all holes in a UL508A enclosure must be sealed with a UL Type rated component to maintain the UL Type rating. I'm am curious specifically about small hole used to attach a name plate or label. I have seen sealing washers, a screw and nut used for this purpose but was wondering if they all would have to be UL Type rated. I was referencing the link below before posting in the forum and noticed that someone mentioned that things like fasteners were an exception to this. I was wondering where that is in the code and why.
Thanks
I was wondering if all holes in a UL508A enclosure must be sealed with a UL Type rated component to maintain the UL Type rating. I'm am curious specifically about small hole used to attach a name plate or label. I have seen sealing washers, a screw and nut used for this purpose but was wondering if they all would have to be UL Type rated. I was referencing the link below before posting in the forum and noticed that someone mentioned that things like fasteners were an exception to this. I was wondering where that is in the code and why.
HTML:
http://forums.mikeholt.com/showthread.php?t=140694
Thanks