What are the disadvantages of ring circuit .

what are the advantages of the tree circuit. 

Hi! @meet
 
The disadvantages of the ring circuit are:
 (1)  It produces strong electromagnetic fields. The ring circuit forms a magnetic coil, which induces a magnetic field at the AC frequency (50 or 60 Hz).
(2)  The safety tests for ring circuits are complex and time consuming.
(3)  The load distribution of the ring must be balanced for safe operation. It is very difficult in practice.
 
The advantages of the tree circuits are:
(1)  The phase and neutral lines of the tree wiring are close to each other and the electromagnetic interference is negligible.
(2)  The safety tests for tree circuits are easy.
 
Hope you have got your answer!
Cheers!!

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acc. to me ring circuit have no disadvantage...

& advantages of tree system are:

1. in this system circuits are in parallel, each circuit operates separately. so, if one of the distribution circuits gets overloaded, only the fuse in that circuit blow off. other distribution lines will remain unaffected.

2. when two or more appliances will be able to draw the as needed. the appliances having low resistence will draw higher current & that having high resistence will draw smaller current.

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