I have arranged my panel so that loads like the dishwasher are on the leg that is not running the audio. Similiarly the fridge, washer, large motors that kick on by themselves. You have three lines coming to the house- one neutral and two hot. Put the two hots on one circuit and you have 220. Only one hot is 120. So I keep noisy junk on the other leg (other hot). Of course, you are still connected to your neighbors junk.