The best way to stop earth leakage is to make sure that the are no active circuits going to ground. This will help keep the circuit running right.
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Yes, a loose neutral wire can effect the operation of Earth Leakage Circuit Breaker.
What is the definition of earthing and how it works?
ELDB stands for Earth Leakage Detection and Breaker. It is a device used in electrical systems to detect any leakage of current to the earth, which could be potentially dangerous. When a leakage is detected, the ELDB will trip the circuit breaker to cut off the power supply and prevent any electrical accidents. This is especially important in ensuring the safety of individuals and protecting electrical equipment from damage.
http://www.irh.com.au/News/news_Wiring.pdf
When you first notice it get it repaired or put duct tape on it.
10mA
Earth leakage relays are instantaneous tripping relays where as earth fault relays have the option of time and ampere setting i.e. for a setted ampere the circuit breaker will be tripped off after the setted time (in second).
Ground / earth protection will not impact cable sizing.
there will be current that isn't carried by the current carrying conductors
It's the Earth leakage resistance (Ohm)
Earth leakage circuit breakers can trip in the off position if there is a fault in the wiring or if the breaker itself is faulty. It could be due to high levels of leakage current or a short circuit. It is a safety feature to prevent electrical hazards and should be investigated by a qualified electrician.