Wire was BURNED up for an 800 AMP Circuit Breaker! Had to Crimp Wire and put new breaker, thoughts?

What happens here

This project details the installation of an 800 AMP circuit breaker in a large electrical panel, which is a critical task typically performed by master electricians. The process involves meticulous cleaning of electrical terminals, securing the heavy-duty circuit breaker, and carefully connecting 500 KCMIL parallel aluminum conductors. Special attention is given to applying a conductivity paste (like Noalox) when working with aluminum wiring to ensure optimal electrical contact and prevent oxidation. The video captures an emergency job completed at 4 AM, highlighting the demand for precision and expertise in high-amperage electrical systems.