AMPERE ELCB HARUS LEBIH BESAR DARI MCB KWH METER, KENAPA ?

Summary

This video explains why the amperage rating of an ILCB (Insulation Leakage Circuit Breaker) should be higher than that of the MCB (Miniature Circuit Breaker). The ILCB primarily offers protection against leakage current and human safety but lacks overload or short-circuit protection, unlike the MCB. Using an ILCB with a rating lower than the MCB can cause overheating and fire risks, as the ILCB cannot trip in cases of overloads or short circuits. To avoid these hazards, the ILCB must have a higher rating than the MCB for safe operation in the electrical installation.

Takeaways

• 😀 The ILCB (Residual Current Circuit Breaker) should have a higher ampere rating than the MCB (Miniature Circuit Breaker) for proper protection.
• 😀 The MCB provides protection against overloads and short circuits, while the ILCB only protects against leakage currents and human safety.
• 😀 If the ILCB ampere rating is lower than the MCB, it may overheat without tripping during overload or short circuit situations.
• 😀 An ILCB is designed to prevent electrical hazards related to leakage currents and provide human protection, not to handle excess current or short circuits.
• 😀 If the ILCB is undersized, it could overheat, potentially leading to fire hazards in a home or building.
• 😀 Overheating occurs in an undersized ILCB because it doesn't have overload or short circuit protection, unlike the MCB.
• 😀 If an ILCB is incorrectly matched with the MCB's ampere rating, it could cause the system to fail, putting the house at risk of fire.
• 😀 A properly sized ILCB ensures safety from electrical leakage while still leaving overload and short circuit protection to the MCB.
• 😀 The ILCB's main function is to detect leakage currents and ensure protection against electric shock or fire risks, not to act as an overload or short circuit protection device.
• 😀 The explanation is critical for ensuring electrical system safety, especially when both an ILCB and MCB are used together to provide full protection.

Q & A

Why should the ILCB amperage be higher than the MCB amperage?

The ILCB should have a higher amperage than the MCB because it does not provide overload or short circuit protection. It is designed to protect against leakage currents and human safety, not the load itself.

What does the ILCB protect against?

The ILCB protects against leakage currents and provides protection for humans, but it does not offer overload or short circuit protection.

What happens if the ILCB amperage is the same as the MCB amperage?

If the ILCB amperage is the same as the MCB amperage, the ILCB can overheat because it lacks overload and short circuit protection. It will not trip, and this can result in the ILCB becoming too hot, potentially causing a fire hazard.

Why is the ILCB vulnerable to overheating when installed with the same amperage as the MCB?

The ILCB is vulnerable to overheating because it lacks the protection against overloads and short circuits. Without these protections, it cannot safely handle excessive currents, leading to overheating and potential fire risks.

What type of protection does the MCB provide that the ILCB does not?

The MCB provides protection against overloads and short circuits, whereas the ILCB only provides protection against leakage currents and human safety. The MCB will trip in case of excess load or a short circuit, while the ILCB will not.

What could happen if the ILCB continues to overheat?

If the ILCB continues to overheat, it may catch fire, which can lead to significant safety hazards, including potential damage to the home and risk of injury or death.

Why is the ILCB important for human safety?

The ILCB is important for human safety because it detects leakage currents, which can cause electric shocks, and disconnects the circuit to prevent injury or fatalities due to electrical leakage.

Can the ILCB trip when there is an overload or short circuit in the installation?

No, the ILCB does not trip in case of an overload or short circuit. It is designed only to protect against leakage currents and does not provide the same protections as an MCB.

What is the role of an MCB in protecting an electrical installation?

The MCB plays the role of protecting the electrical installation from overloads and short circuits. It will disconnect the circuit if the current exceeds safe levels due to an overload or a fault.

What should the recommended amperage for the ILCB be when the MCB is 25 amperes?

The recommended amperage for the ILCB should be higher than 25 amperes, for example, 40 amperes. This ensures that the ILCB does not overheat, as it would with the same amperage as the MCB.