I am a bit confused .... I've never seen any sort of relay / contactor / starter / overload / whatever where the base had to be grounded. That is, the body of the device was grounded by its' mounting screws.

All I can remember seeing were components made of some non-conducrive material. The only terminals provided were for the load-carrying conductors and control wires - not even a place for attaching a bonding jumper.

Now, if you're saying that the enclosure must be bonded, pull boxes have their own points that are specifically prepared for accepting a green screw. This location is distinct from the mounting holes.



Maybe we're thinking different thinngs when we say 'contactor.'

Last edited by renosteinke; 07/26/10 09:42 AM.