At an industrial park, I've come across a number of code violations. One of the more common problems is the substitution of the proper circuit breaker panel cover screws with sheet metal screws. It would appear that previous workers had dropped or otherwise lost the OEM panel cover screws and would simply use whatever sheet metal screws they happened to have handy. Very dangerous as the sharp points and self-cutting threads on these replacement screws could easily penetrate the insulation jackets of the wiring inside the panel.
Obviously, I'd like to replace these with the correct screws. But in most cases, the sheet metal screws used were larger than the original OEM screws, so the threaded holes in the panel were enlarged by the sheet metal screws. Is there a common way to repair the holes to accept original screws? I thought about using a nutsert, but I don't think the OEM panel cover screws use standard threads (by size, they appear to be 10-32, but they aren't).
Which brings me to the next question: does anyone know the specs of panel cover screws? The panel I'm currently working on is a Square D panel, but I think all panels use the same type of cover screws.
Any suggestions would be appreciated!
Obviously, I'd like to replace these with the correct screws. But in most cases, the sheet metal screws used were larger than the original OEM screws, so the threaded holes in the panel were enlarged by the sheet metal screws. Is there a common way to repair the holes to accept original screws? I thought about using a nutsert, but I don't think the OEM panel cover screws use standard threads (by size, they appear to be 10-32, but they aren't).
Which brings me to the next question: does anyone know the specs of panel cover screws? The panel I'm currently working on is a Square D panel, but I think all panels use the same type of cover screws.
Any suggestions would be appreciated!