Which protection is provided by a MCB as opposed to an RCCB?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the 3rd Year Electrical Trades Qualification (TQ) exam. Use flashcards and multiple choice questions to master the material. Each question comes with hints and explanations to help you succeed. Get set for your qualification!

Multiple Choice

Which protection is provided by a MCB as opposed to an RCCB?

Explanation:
Overcurrent protection is what an MCB provides. An MCB (miniature circuit breaker) is designed to interrupt the circuit when the current becomes too high, protecting conductors from overheating during overloads and stopping damage from short circuits. An RCCB, on the other hand, detects earth leakage by sensing any imbalance between live and neutral current and trips to prevent electric shock. Voltage regulation and surge protection are handled by separate devices (voltage regulators or power conditioning equipment, and surge protective devices), not by an MCB. So the protection offered by an MCB, in contrast to an RCCB, is overcurrent protection.

Overcurrent protection is what an MCB provides. An MCB (miniature circuit breaker) is designed to interrupt the circuit when the current becomes too high, protecting conductors from overheating during overloads and stopping damage from short circuits. An RCCB, on the other hand, detects earth leakage by sensing any imbalance between live and neutral current and trips to prevent electric shock. Voltage regulation and surge protection are handled by separate devices (voltage regulators or power conditioning equipment, and surge protective devices), not by an MCB. So the protection offered by an MCB, in contrast to an RCCB, is overcurrent protection.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy