Hi folks It’s a level 3, not level 2 charging station in the article. Level 2 (single phase 240V) EVSE should only use copper wire per Tesla Level 2 installation instructions. With outside temperature variations, aluminum wire tends to creep away from the terminals over time (get loose ) and can then cause a fire under high current operation. I’ve seen garage aluminum connections loose after 5-10 years but inside the house at constant temperature, connections are still tight (proper terminal torque settings). I avoid aluminum wiring due to the thermal creep problem. Sometimes it’s required for long 200’ solar installation runs and increase size for derating and voltage drop. Best regards Mark
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