ELCB Trips when connected

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I am facing very strange issue in my power meter & wiring. i am residing in Group society. following is my setup.

electricity digital Meter is installed at bottom with a circuit breaker out of my house. i have ELCB installed which acts as circuit breaker for electricity of my house and other small MCBs are installed for regular electricity. some MCBs are installed for high-Power switches which are actually for ACs and Geysers.

5) i have relay switch installed in main circuit box which switch between Main power and Gen-set power(in time of power cut), so high-Power switches ( point 4 above) are not relayed , they directly get power from phase as high-Power switches are not connected to Gen-set.

issue i am facing.

ELCB is always tripping when connected to home wiring. so my electrician has separated that from ELCB and now ElCB only controlling high-Power switches & it does not trip. if i switch off the all MCbs and ELCB my power meter show that i have consumed some...
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An Earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations with high Earth impedance to prevent shock. It detects small stray voltages on the metal enclosures of electrical equipment, and interrupts the circuit if a dangerous voltage is detected. Once widely used, more recent installations instead use residual current circuit breakers which instead detect leakage current directly.

Purpose[edit]

The main purpose of Earth leakage protectors is to prevent injury to humans and animals due to electric shock.

History[edit]

This is a category of devices, which are used to protect instruments, circuits and operators, while Earth leakage. Early ELCBs are voltage sensing devices, which are now replaced by current sensing devices (RCD/RCCB). Usually voltage sensing devices are called ELCB and current sensing devices are called RCCB.

Voltage sensing ELCBs were first introduced about sixty years ago. Current sensing ELCBs...

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Early earth leakage circuit breakers are voltage detecting devices, which are now switched by current sensing devices (RCD/RCCB). Generally, the current sensing devices termed as RCCB and voltage detecting devices named as Earth Leakage Circuit Breaker (ELCB). Forty years ago, the first current ECLBs were introduced and about sixty years ago the first voltage ECLB was introduced. For several years, both the voltage and current operated ELCBs were both referred to as ELCBs due to its simple name to remember. But the applications of these two devices gave growth to the significant mix-up in the electrical industry.The manufacture of ECLB includes Fuji Electric, Major Tech, Siemens, ABB, Avera T&D, Telemecanique, Camsco, Crabtree, Orion Italia, Terasaki, MEM, and V guard.

What is an Earth Leakage Circuit Breaker (ELCB)

An ECLB is one kind of safety device used for installing an electrical device with high earth impedance to avoid shock. These devices identify small...

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An Earth Leakage Circuit Breaker (ELCB) is a safety device used in electrical installations with high earth impedance to prevent shock.

Purpose

Many electrical installations have a relatively high earth impedance. This may be due to the use of a local earth rod (TT systems), or to dry local ground conditions.

These installations are dangerous and a safety risk if a live to earth fault current flows. Because earth impedance is high:

not enough current exists to trip a fuse or circuit breaker, so the condition persists uncleared indefinitely the high impedance earth cannot keep the voltage of all exposed metal to a safe voltage, all such metalwork may rise to close to live conductor voltage.

These dangers can be drastically reduced by the use of an ELCB or residual-current device (RCD).

The ELCB makes such installations much safer by cutting the power if these dangerous conditions occur. This approach to electrical safety is called EEBAD. In...

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Difference Between ELCB, RCB and RCD Circuit Breakers

ELCB: Earth Leakage Circuit Breaker

ELCB stands for “Earth Leakage Circuit Breaker” and it is used for protecting a person from electric shock and injury. The needs of these devices arise because of the number increasing in injuries as well as deaths because of electric shock. This device is invented almost 50 years ago, but nowadays ELCB is not suitable because of its some disadvantages hence another device RCB (Residual circuit breaker) or RCD (Residual Current Devices) whose functionality is same with more advantages, but theory of operation is entirely different from ELCB.

Also read:

ELCB Construction:

It is international standard that each electronics device enclosure should be earthed. So, there would be no chance of electrocutions. For proper operation of ELCB, its need to bury a metallic rod deep in the soil and ELCB is connected between the wire coming from the rod to the wire...

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Recently my house main ELCB (Earth Leakage Circuit Breaker) tripped intermittently. The ELCB can trip from few minutes to an hour. For your information there must be something that had gone wrong and drawing too much current causing the ELCB to trip.

Before I reset the ELCB switch, I removed all the electrical devices plug like handphone charger, hair dryer, TV, router and etc and also turned off all the lights. I even turned off the air-conditioner (air-cond).

Once done, I reset the ELCB switch and connecting back the electrical plugs one by one hoping to see the ELCB trip again. If it tripped then I know the source of the problem. I did not turn On the air-cond. I let all the electrical devices connected to the ac socket and all the lights On for more than 2 hours and the ELCB did not trip. This is a good sign because it means the air-cond could be the problem. So I went to the living room and turn On the air-cond and within 10 minutes the ELCB tripped! I...

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Earth-leakage circuit breakers, or ELCBs, can provide helpful fault protection in live circuits, including those that power appliances such as televisions, refrigerators, and microwaves. While traditional ELCBs aren't as common as more modern devices, they can still serve as useful additions to wiring in labs, businesses, and homes.

What ELCBs Do

ELCBs are designed to automatically detect fault conditions and disconnect power before it can become a hazard to anything nearby. Unlike ground-fault circuit interrupters, or GFCIs, and residual-current devices, or RCDs, however, most ELCBs only detect fault conditions that occur on the ground line. To perform their vital task, they monitor voltages to decide when to de-energize a circuit.

Voltage Sensing ELCBs

The building wiring that powers appliances and other devices usually features three different wires, which are referred to as hot, neutral, and ground. The ground wire serves as a safe return path for...

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