The Siemens catalog identifies these as "0.25" K.O." and shows them in the diagram for indoor enclosures(diagram Q7) located in the top and bottom of the enclosure. Why would there be a "weep hole" in an indoor enclosure or a weep hole in the top of any enclosure? In diagram Q2 it refers to these holes as K.O.'s for 0.25" conduit. Since when is there 1/4" conduit? Diagram Q7 also shows 12 K.O.'s for 0.38" conduit. These are all UL listed enclosures.
