Answer / abhishek maji

In a single phase system very often three wires are provided: 1.LIVE,2.NEUTRAL,3.EARTH.In the single phase system we have to prove a return path for current otherwise no current will flow...and that is the typical job done by the neutral wire i.e. it serves as a return path...On the other hand earth is provided for the purpose of protection,whenever a fault occurs in the system huge fault current which is many times the rated current flows through the earth wire and in thus way protects the system...

How can I calculate the fault level of a transformer. 1. If fault is 3phase fault 2. If fault is 1phase fault 3. If fault is 2phase fault Dear all geniouses, can you help me by giving answer. If anybody want to send something then mail me at "msalam_shahin@yahoo.com"

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