Pot:
Are you saying that you have devices wired with Al conductors, or are the repairs in the feeders???
Over the years with tools, I had a few issues with Al conductors (#4 & #6) that were installed for parking lot lighting circuits. Deterioration from the water (UG) over time caused burnouts, and it was a PITA to make repairs.
Cracks or scratches in the insulation allowed corrosion, and over time...burnout and fry the PVC conduit.
Budget saver when installed originally, but a budget buster on repairs.
