Originally Posted By: Scott Wilson
This post was automatically imported from our archived forum.
These are copper conductors, the lugs are aluminum, and the bus is copper. This is fine, and really doesn’t require anti-oxidant compound.
The connection on the left is OK, the one in the center was never tightened correctly, and the one on the right has the same malady, but is also is loose from the bus.
If you'll look, though, at the depth to which the "screws" on the lugs are driven, you'll see they're entirely different.
It's amazing how many times you run into this!! Although you can't tell if a connection is "right", you can be sure that it's "wrong" when you find them like this.
(The one on the right slid right out with just a very slight tug) ![icon_surprised.gif](upload://57CELbNgOav4I8DdysEp4jSUiyx.gif)