06-24-2008
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#41 (permalink)
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F1 Camel
Location: Baku, Azerbaijan - Hanging out in the UAE
Posts: 4,967
CamelKarma: 1308
Editing OK?: Ask first
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Re: The usless knowledge thread:
Quote:
Originally Posted by joshman
The RCD (or safety switch) in an electrical installation works by the detection of an imbalance in current between the active and neutral conductors. This imbalance is detected through the phenomenon of mutual induction, whereby the pulsating nature of AC creates a magnetic field, which due its fluctuating nature, can induce a voltage in nearby conductive materials. This imbalance is caused (usually) by an earth fault, where current is 'leaking' through to earth.
at least, that's the way it is in australia.
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That's much too useful to be in here. 
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