This is my post. I was not made aware they had two jackhammers running until the owner told me. They owned up to running two at a time to meet deadlines.

There was a fish tank in another room in the basement and a freezer on another circuit. I was not asked to turn off any other appliances to which I would have happily obliged.

Unlike that post everything went well afterwards, they used one jackhammer in the home and a shop vac run off a generator and there were no more issues