Distortion on the Power Line

greetings! I believe any good quality power amp with a regulated power supply should pretty much make AC line distortion a non-issue...
don't you think the average high quality loudspeaker produces 10-15% distortion below 100 hertz/95 decibels anyways...?

jea48,

If you don't have one, you can pick up used Fluke 43/43B for < $1,000 used on EBAY which is fine for single-phase use. The Fluke 41B is an older unit, but ones in good condition go for <$500 regularly with required accessories. There is even one with a 1 year warranty for $550. They come standard with 1000:1 current probes with BNC connectors. I have hooked up a 10:1 current probe and used one for low power measurement as well.


The 3 phase units are pricey even used.

I was not suggesting for the casual user, more for electricians who want to step up their diagnostic capabilities (if they don't have this already), or helpful EEs. If you need a certification training to interpret the basics of what comes out of those meters, then I probably don't want you touching anything I own.


The "certified" Power Quality Testing designation I have heard of is by the Association of Energy Engineers.  Is that what you mean? You don't have to be terribly qualified to enter their program so it feels like another 3 letter designation so popular on LinkedIn profiles and business cards, but conferring questionable abilities on those holding it. Education is great, but as pointed out in another thread 60% and 90% are often both passing grades.