any decent lawyer will tell you that without a warrant that evidence is completely inadmissable. Same thing that happens when a drone sees grow lights and the cops bust it. Charges get dropped every time because without a warrant, the courts won't let it through. Spying is still frowned upon by the courts when it comes down to it and those cases almost always get thrown out.

But, not the point. The power company does not communicate with law enforcement unless law enforcement is asking. So pay your bill and they will not notice 8000W of power from a home if it is being used 4000W at a time. An average home can have all kinds of fun things running inside, the power company just wants your money and no hassles. Don't try to steal electricity and keep your wattage sane. They won't notice a thing, at least they won't care even if they did.

Get a welder if you like and that is explanation enough if you are still paranoid about it. If you are worried enough to think you need a generator do it. Whatever it takes to make it fun instead of scary. If it is too nerve racking then it isn't worth it.