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Do-It-Yourself (DIY) Question & Answer Forum
Bathroom - Shock!
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<blockquote data-quote="HandySparks" data-source="post: 397966" data-attributes="member: 26592"><p>I suspect that you're thinking of the old voltage operated earth leakage circuit breakers (VOELCB). These became obsolescent more than 30 years ago.</p><p></p><p>Today's RCDs work by monitoring the current in line and neutral and tripping if the difference exceeds a threshold, often 30mA. They don't rely on the presence of an earth conductor (CPC) in the final circuit.</p></blockquote><p></p>
[QUOTE="HandySparks, post: 397966, member: 26592"] I suspect that you're thinking of the old voltage operated earth leakage circuit breakers (VOELCB). These became obsolescent more than 30 years ago. Today's RCDs work by monitoring the current in line and neutral and tripping if the difference exceeds a threshold, often 30mA. They don't rely on the presence of an earth conductor (CPC) in the final circuit. [/QUOTE]
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