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Author Topic: Arc Fault Circuit Interrupters (AFCI's)  (Read 609504 times)
KF7CG
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Posts: 1099




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« Reply #660 on: August 24, 2016, 10:59:19 AM »

VA3KBC, how does either of the products solve the radiated RF susceptibility of the AFCI's in question. From all evidence so far the susceptible units are sensitive to radiated RF and need no RF conduction to the source. Nice thoughts, but wrong thread.

KF7CG
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W9IQ
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Posts: 682




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« Reply #661 on: August 24, 2016, 11:23:46 AM »

The answer is that common mode currents bring radiated RF closer to the house / shack since the feedline is participating as part of the antenna. As a result, AFCI devices that are susceptible to radiated RF will see a stronger RF near field increasing the likelihood of nuisance trips .

By keeping common mode currents off of the feedline, the RF field is further removed from the vicinity of the affected AFCI devices and you then have FSPL (Free Space Path Loss) working in your favor.

- Glenn W9IQ
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- Glenn W9IQ

I never make a mistake. I thought I did once but I was wrong.
W5YZ
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« Reply #662 on: August 24, 2016, 02:29:44 PM »

My presentation went great.  About 20 people attended and several wanted a copy of the presentation to take back to their clubs.
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W9IQ
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« Reply #663 on: August 24, 2016, 03:47:02 PM »

Congratulations, George. I would appreciate a copy too. W9IQ at ARRL dot NET. Thanks!
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- Glenn W9IQ

I never make a mistake. I thought I did once but I was wrong.
W5YZ
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Posts: 129




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« Reply #664 on: August 27, 2016, 03:49:13 PM »

You got it!
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