For those professional electricians, I have two questions.
(A) On your typical Square D Electrical Panel (200A) there are six panel screws (10-32 w/Large Pan Head). I worked on a panel the other day when I needed to change out a Breaker (15A). I noticed that all six panel holes were wallowed out and the 10-32 screw barely caught a grip. So my question falls into this area. Does Square D make a "panel screw repair kit" which basically ups the screw diameter to a larger scew (ie: 12-28, etc)..?? Is this something that is done in the field by someone me by going to the hardware and buying larger screws..?? If this is a field modification, how big can one go..?? I am finding it a bit difficult to find 12-28's, although 12-24's seem a tad bit easier. What about 1/4-28..?? Any suggestions would be most welcome.
(B) I had to a replace a single pole 15A breaker. I had one heck of a time removing same. I finally got the defective breaker out. The "spring clip" on the front of the breaker where it grabs the "Buss strip" was dry. So, I was wondering what type or brand of "conductive grease" should be used on these clips or the knife blades in Disconnect Switches..?? I went to Schneider's Web Site and they talking about SWLUB (Dow BG-20). Seems that is quite expensive ~$30.00 for 5.3oz. Went to the Dow site and they cite BG-20 is a bearing grease (?????)
Is there a reasonable brand of "conductive grease" used to lubricate sliding surfaces in electrical equipment...??
