For a project I need to handle large current, about 1200A.
To do so I intend to distribute the power using busbar.
Copper would be a good option but is fairly expensive and aluminum has almost the same conductive property, but due to the oxide layer is quite difficult to connect and have good contact.
I'm looking for a reliable way to connect aluminum busbar.
One option is to have screws into a bit smaller than usual threaded holes, while screwing it would damage the oxide layer and provide contact, but I'm not sure of the long term effects and if the screw is being replaced.
I also thought of a self etching conductive primer that would keep off the oxide layer, but couldn't find anything of that sort.
Is there any good way to contact aluminum busbar?