electrical generation from unknown souce
electrical generation from unknown souce
(OP)
I have accidently discovered that my window screen on my front porch is conducting a\c voltage at 2.5 constantly.the screen is 4 feet by 10 feet long and is not grounded.i put a grounding rod aprox 4 feet deep and checked it again the voltage seems to be constant 24 hours a day.How can this be?Is it the metallugy of the zinc coated wire mesh causing this or is it resonance from the power lines near by? approx 100 feet away.hope to hear some opinions





RE: electrical generation from unknown souce
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: electrical generation from unknown souce
At your local Line Frequency (50/60 Hz)?
Measured with a Hi-Z meter? I can sometimes get a volt or two on those just by holding the probes. Almost meaningless.
Adjust the meter to measure the AC current to ground. That's far more meaningful than the voltage into a Hi-Z meter.
RE: electrical generation from unknown souce
There is always a lot of electrical potential around between insulated metal objects and ground arising from potential differences (AC or DC power), moving magnetic fields (electrical induction), charge difference (static), RF fields, chemical process (dissimilar metals), or even sunlight knocking electrons loose (photoelectric effect).
RE: electrical generation from unknown souce
Keith Cress
kcress - http://www.flaminsystems.com
RE: electrical generation from unknown souce
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers