Uploaded July 2017 | Updated September 2026, 55 minutes ago

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This is my Homemade ELCB(Earth Leakage Circuit Breaker) Trip Tester.
Each of the five buttons generates 10mA leakage current .
Neon Lamp A lit on : Line - Earth OK (Test available)
Neon Lamp B lit on : Line - Earth Reversed (Test available)
Both Neon Lamp lit on : Test Not available(Earth line is not connected or single phase three wire power system)