Dear Group, I have a client who wishes to use open slots instead of closed holes for the connecting bolts used in joining two 400A busbar within their product. This decision was taken to make installation and maintenance easier. However, their installation Manager has objected to this without giving a reason. I have e-mailed my contacts within TUV and UL, and after some 48 hours they have not responded.
Are there any sufficiently knowledgeable people who can tell me whether or not this is permissible, and why. Best regards, David Sproul.
