This is what I experienced. When I was in college I had a job blowing in insulation. We'd specifically use the circuit the dryer was on because of this for our machine. This was before my friend bought a generator (he'd graduated already and started the business right after college) and we just hooked the machine up to that because sometimes they'd have shitty wiring like the OP seems to have and we'd constantly trip the circuit making the job take longer, even though we'd be hooking in to the dryer circuit.