How To Do You Measure the Quality of Your AC Power?


What is the best way to measure the quality of the AC power feeding your listening room? Is there a device you can plug into an outlet that will give you the voltage, frequency, the total amount of distortion relative to a perfect sine wave, etc.? Furthermore, how would you measure the ability of your AC main to deliver transient currents?
It seems like there may be a scenario where you could measure your power quality to be excellent but somewhere in the line you could have a loose or poorly made wiring connection which under heavy load (such as powerful bass notes) you could run into trouble with power delivery. In this scenario, an AC regenerator would not help you, or would help very little.

Just curious what methods people have come up with to systematically analyze their power and how they use those measurements to drive buying decisions or repair work, if needed.

Edit: My apologies for the title typo.
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Showing 1 response by sndsrtaud

Lots of good advice here save the link to the ASR clowns. Anyway, there are meters available (Entech, for example) which can measure a degree of noise in your home. My wife and I flip homes and do a majority of any electrical work in the renovations. Prior to buying, I measure the mains noise with an Entech meter and a Stetzerizer. Some readings come in low (<100) while other peg the meters out- these mostly in high rise condos- I avoid investing in these places. As JEA48 pointed out, often the problem can be from loose breaker terminals in the electric panel, especially in newer homes. FWIW, I am an electrical systems technician and can say that most service calls I go on have a common denominator- bad connections- by the prior service tech, of course!