I live in Texas. I ran 300 ft of aluminum electric direct-bury 4-4-2 from the pole on street to my new home. The pole is metered and yes, I had my utility's blessing to do so.

Everything worked perfectly for 6 months, but now suddenly if I plug anything (lamp, heater, charger ) in my lights dim, or sometimes if I plug in elsewhere things get very bright or plug in heaters work better or worse depending.

There’s no rhyme or reason to any of it.