Simple way is to plug in your meter on the HZ setting. If it reads close to
60 your ok. If it reads 180 then you have the 3rd harmonic. What ever the
reading is divide by 60 and you will have the highest harmonic recorded.
I know of no way to look at harmonics with out the proper tools. A Fluke 43B
(or something in that range) is the bottom of the line when it comes to
harmonics as far as I am concerned. I have used an o'scope for many years
and mine do not have enough detail nor the ability to measure current and
voltage at the same time.
Fluke 41B is about the minimum for harmonics work. The 43B has a 25Mhz
scope built in and is a little more expensive.
Any method using VOMs (RMS vs peak detecting vs average reading) is just
Charles Perry P.E.
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