Affect Health? Noise problem?
Depends on the devices, I lived below a cell tower (literally 1m over head, installed on the top of my building). After doing as much research as I could on it, I found that no one really knows for certain the effects of radio waves on humans. If your major concern is just large voltage electricals, the greatest risks are fire, a small magnetic field might interfere with your devices occasionally, and constant low hum.
