I have not really come across people talking about ring circuit so there will be cost saving when this ring circuit is able to loop up more power point. (Maybe i have not seen that much)
We usually talk about ring circuit is the redundancy when some wiring somehow breaks and the power point still can work, as the way they are wired is different.
can refer to page 17 in pdf below
Guidelines For Electrical Wiring In Residential - Suruhanjaya Tenaga
(search and download from google)
Not exactly sure what is your application / reason to do so (just want to save money as looping is cheaper? My thinking is costing can be subjective from contractor to contractor anyway. ). But u just have to understand wiring is designed to carry certain Amps, while MCB (circuit breaker) to ensure Amps flowing thru it will not exceed certain Amps.
Wiring can be oversized but MCB rating shall never be bigger than wiring.
Wiring burnt when carrying higher Amps than it is specified and MCB will not trip if it is not selected properly.
And if you compare the schematic from ST, radial circuit vs ring circuit.. isnt that ring circuit will just an additional looping / return wiring to the MCB.. so shouldnt it be costing more?
Well, up to ur contractor to advise.
The "Malaysian" wireman will define looping as radial.
While actual looping technically can handle more load because the current are return back to mcb via 2 path. Ring will give redundant and more current. But will also give the danger of over load the wires if one of the path break and load are running high.
Apr 19 2017, 04:30 PM
its actually conceal in concrete wall with pvc conduit....not using mega cable but made in malaysia cable with SIRIM
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