milmat1
"It Can't Do That !"
- Location
- Siler City, NC USA
- Occupation
- Controls Engineer
Folks,
I have some AWG-1 motor conductors going into Schneider LRD3365 [80-104A] thermal overload relays. These are bare stripped THHN conductors with no ferrules, lugs etc. Held in place by cage clamp screws in the OL unit. The specs call for 9nm [79 lb-in] torque. I'm sure we are stretching that now. The electrician is tightening the clamp screws nearly to failure. And still, you can wiggle the cables a little and they will just come loose. There just isn't enough compression of the conductor strands to maintain a tight connection.
Anyone have any advice as to what can we do here to help maintain a tight connection ?
I have some AWG-1 motor conductors going into Schneider LRD3365 [80-104A] thermal overload relays. These are bare stripped THHN conductors with no ferrules, lugs etc. Held in place by cage clamp screws in the OL unit. The specs call for 9nm [79 lb-in] torque. I'm sure we are stretching that now. The electrician is tightening the clamp screws nearly to failure. And still, you can wiggle the cables a little and they will just come loose. There just isn't enough compression of the conductor strands to maintain a tight connection.
Anyone have any advice as to what can we do here to help maintain a tight connection ?
