open a circuit breaker: Once inside your box you should turn off the breaker being changed,There will be a black wire coming off the breaker ,you need to loosen the screw and remove this wire. The wire goes to the circuit branch in your house that is controlled by the breaker. Set this wire end aside – it is not live but don’t let it contact anything less you accidentally make it live!
The breaker is plugged in to a rail in the bottom of the breaker box, the rail is live. You have to release breaker which has a detent that locks it to the rail by tilting and removing the breaker.
Read: Relay and Circuit Breakers MCQ Questions|EEE Made Easy
Join EEE Made Easy Telegram channel
You then need to put the replacement breaker – must be the exact same rating or you risk burning down your house! – Make sure its off, then tilt it in and snap-lock it in place. Now replace the black wire to the circuit branch and turn the breaker on.
If you want to be extra safe, turn off the master breaker at the top before you change anything, then turn it back on after you’ve changed the breaker.
remember there will be some exposed electrical contacts when you do this. You’d better be able to recognize and avoid them.
Join EEE Made Easy Whatsapp Channel
Read: Difference between Isolator and Circuit breaker|Isolator Vs Circuit breaker
More on Circuit Breakers
- Relay and Circuit Breakers MCQ Questions|EEE Made Easy
- How to open a circuit breaker
- Difference between Isolator and Circuit breaker|Isolator Vs Circuit breaker
- Types of circuit breaker| Circuit Breaker Types
- Difference between Fuse and Circuit breaker|Fuse vs Circuit Breaker
- Fuse|Electrical Fuse
- [PDF] Junior Instructor Wireman Syllabus|673/2023 Syllabus
- [PDF]Syllabus Junior Instructor Electroplater|669/2023 Syllabus
- KSEB- Kerala State Electricity Board|KSEB AE Electrical Interview
- [Set3]AE KSEB Interview Questions|Basic Electrical Engineering Interview Questions
- [Set2]AE KSEB Interview Questions|Basic Electrical Engineering Interview Questions
- AE KSEB Interview Questions|Basic Electrical Engineering Interview Questions
- [New Book List]Assistant director industries and commerce Books Based on New Syllabus