If your cousin is an electrician, you may want to consider having him run a separate circuit to its own breaker. The reason you see all those anomalies is because compressors put a large strain when they first ramp up to speed (called inrush current).
Also, if you look at a power conditioner (but they ain’t cheap) that should help alleviate any power issues dealing with dirty power. APC (yay!), Monster, and Panamax are good brands to look at.
