What is the voltage at your receptacle?

The voltage in my neighborhood (Bethesda, MD) is quite consistent, I typically see 117-120 volts all the time. This is based upon the display on my TrippLite UPS that is used to provide backup power to my main computer system. I have seen it dip as low as 116V and go as high as 121V, but only for the briefest of moments.

-RW-

I live in a rural area, there is a tranformer quite near to my house.
On a dedicated circuit, I have a Furman PL Pro-D power protector, which has a digital voltmeter built in.
I was constantly seeing high voltages displayed on that meter. 126v not unusual, and often 129-130v. Of course the Furman cuts out at overvoltage. It was happening frequently - sometimes every night. In the middle of watching TV, or a DVD, or listening to music - very annoying.
I called the power company, and they pretty much just shrugged. Maybe it could be fixed, they said. But I have an electric pottery kiln, and the high voltage is an advantage (cuts firing time) so I let it go.
I got a PS Audio power regenerator, and now my voltage is steady as a rock, and right where I need it.

124 volts +/- ,2 volts.

The two legs at my breaker box read 119.8 volts and 121.7 volts.

I have all my stereo dedicated runs connected to the 121.7 phase and noisy appliances such as refrigerator, TV, and bathroom outlet used for hair drier are all on the 119.8 V side.