Um, running any electrical appliance will EVENTUALLY use up its life and wear it out. Might take 30 or 40 years of continuous use, but hey, we can wait.
Let's see, assuming your household wiring is US standard, i.e. 120 volt, 60 Hz AC AND the wire is sized to support the common 15 amp and 20 amp circuits used in US homes, or 30 amp or 50 amp circuits intended to support an RV hookup, how, exactly does that differ from the power pedestal at a campground that supplies (or is supposed to supply) 120 volt, 60 Hz AC?
Where on earth do you think each gets it's power? Off the very same electrical grid, that's where.
IMHO, the person who told you that is an idiot.
