A new terminology for electrical currents now include all faults those between live conductors as well as earth or grounding faults. If we not design our circuit protection properly followed standard guide,it can cause serious injury or death for human and equipment damage. Fault current be determined at every relevant point. For small and medium [...]
For circuit breakers specification MUST suitable with installation condition and needed.Main switchboard is the main power supply distribution for factory or building.This unit is a key for entire electrical power supply distribution. Circuit breaker feed the high volume of voltage for all equipment and machine.It also have a high value of short circuit current due [...]
When we design or build a electrical installation,we must know how to choose the suitable circuit breaker for the any application that we design.For electrician,this is compulsory knowledge.So here i want share my little knowledge about circuit breaker sizing method. This calculation for sizing the miniature circuit breaker.For other circuit breaker likes MCCB,ACB,VCB,OCB and etc,it [...]
What is MCCB ( Molded Case Circuit Breaker ) ? It is a mechanical device ( BS 4752 ) to be used to connect and disconnect the circuit in normal and abnormal.Current rate for regular MCCB up to 3000 ampere. It is only available in a 3 pole only, usually for a system that has [...]
