Crimps on Aluminium twin and earth cable.

The example that OlympusMons has referenced is what I was commenting on. There will be a small capsule of jointing paste at the bottom of each insert. When the wire is inserted, the capsule bursts and paste is pushed up past the conductor, forcing the air out as it goes. The wire is inserted fully when the paste appears at the end of the connector. The wire is then crimped using the appropriate calibrated die and crimp tool. 

Regards,

Alan. 

Alan Capon: 
 

The example that OlympusMons has referenced is what I was commenting on. There will be a small capsule of jointing paste at the bottom of each insert. When the wire is inserted, the capsule bursts and paste is pushed up past the conductor, forcing the air out as it goes. The wire is inserted fully when the paste appears at the end of the connector. The wire is then crimped using the appropriate calibrated die and crimp tool. 

Regards,

Alan. 

Thanks. That is very interesting. Have you ever come across bi-metallic lugs/crimps/buts?

WAGO do a paste for use with their connectors on Aluminium wire. 

The rest of the circuit has survived for around fifty years without any paste in the terminals, still I feel a letter to reinforce the comments on the MWC may be a good idea.

CONGRATULATIONS Sparkingchip, due to a recent effort by you and qualifying contribution, the pixies have enabled you to become a new member of Club Netherworld. It's a good place to have a rest. ?

Z.