Attaching a connector to an optical fiber takes more work than copper wire connectors (note the several steps in the illustrations below). The ends of the fiber usually have to be carefully ...

The inside is contacted by thick copper wire with a kink to again provide spring action. So, spill the beans. What’s your barrel connector trick and does it work reliably?

To do this, electricians use special connectors designed for aluminum-to-copper transitions, such as AL-CU rated wire nuts or other approved devices. COPALUM connectors are preferred by the CPSC ...