I've got a lot of electrical panels with conduit entering through holes that have been drilled across concentric knockouts. We'd like to add bonding bushings to these but would rather not have to "unwire" the whole panel to feed the conductors through the bushings.
I know I've seen bonding clamps or clips that slip under the locknut where the fitting enters the panel. I don't know what to call them and can't find them now. Maybe they were never legal, I can't even remember where I've seen them. But I'd like to find an easier way to add bonding.