Reason of tripping mcb and melt fuse

Question

Accepted Answer

MCB tripping and fuse melting can occur due to overloading, short circuits, or ground faults.

Overloading: When the electrical load exceeds the capacity of the MCB or fuse, it can trip or melt.
Short circuits: A short circuit occurs when a hot wire comes into contact with a neutral wire or ground, causing excessive current flow and tripping the MCB or melting the fuse.
Ground faults: Ground faults happen when a hot wire comes into contact with a grounded surface, resulting in current leakage and MCB tripping or fuse melting.
Faulty appliances or equipment: Malfunctioning or faulty machinery can cause excessive current flow, leading to MCB tripping or fuse melting.
Improper wiring: Incorrect or damaged wiring can cause short circuits or ground faults, resulting in MCB tripping or fuse melting.

Accepted Answer

Machine overload and short circuit condition

Popular interview questions of Machine Operator