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Beats me, but frankly speaking, it is a question that new owners often want to know the answer because they have a few things that need 120vac in the car. I use a small portable inverter to power a few of my low wattage items.
OP, you really shouldn't think about trying to find a means to tap into the HV battery. And by the way, although a lot of people refer to 110 vac, it hasn't been that level in America for several decades. It's 120vac, but sure we understand what you mean.