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Joined: Sep 2008
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From: North Carolina
Good call...that can be an issue. We installed a whole pile of undertile cable sets, and some of the thermostats which were GFI output would trip for no reason...turned out to be an issue with the microprocessor which was picking up on harmonics sent out by CFL's and switching power suppiles (computers, track lights, cell phone chargers etc.)
Post Fiend
Joined: Apr 2004
Posts: 6,473
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From: Lafayette, IN
Electronic circuits (such as in CFLs and AC-DC transformers) are very complex when it comes to what the electrons are doing in the wires. GFI receptacles work by measuring the difference in current (with circuitry) between the hot and neutral wires. If the difference exceeds 5mA (a very small current), the GFI trips, by design--the theory being that the current flowing "in" on the hot wire should all flow "out" on the neutral, if it's not, it could be flowing through a person to another ground path.
The study of electricity/magnetism and quantum physics are very interrelated, and quantum physics is some pretty illogical stuff.
Jason
The study of electricity/magnetism and quantum physics are very interrelated, and quantum physics is some pretty illogical stuff.
Jason
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Joined: Nov 2008
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Here's another good one....neutrals are often smaller than the hots as loads tend to be balanced...there are now situations esp. in office towers where there is more current being sent out the neutral than the hots coming in due to harmonics....causing all kinds of fun things!!....looks pretty intersesting when 2000 amp wire burns up!!
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