Electrical cables can be classified into different Class as per IEC 60228 according to the conductors flexibility and thermal effects.
Class 1 => Solid conductor
Class 2 => Stranded conductor
Class 5 => Flexible conductor
Class 6 => Very Flexible conductor
As per above mentioned IEC 60228, according insulation conductor cable standard Class 2 and Class 5 conductors are differentiated as per its conductor hardness. Class 2 is known as twisted round cable, Class 5 is known as soft conductor. As class 2 cables being harder and less flexible are used for fixed or with less mobile design like permanent building wiring and house wiring. Where as Class 5 being more flexible and less harder, it used for places which is mobile and constantly moves like door wiring in electrical panel.In most of countries except India class 2 wire is used for house wiring, but in India we normally use class 5 or flexible wire for house wiring.
Why we do this? In 2010, BIS implemented IS 694. In IS 694 specifies panel wire and building wire as a similar group of functioning. This actually created an opportunity for Manufacturers. They have started manufacturing and supplying Class 5 conductors as building wires. Actually in class 5 conductors, copper content is less than that of class 2 conducts which make then more flexible wires. Lesser copper content in wire will lead to increase cable resistance and which may in turn increase the power consumption and loss.
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2 thoughts on “Best Wire for House Wiring | Gulf Wires Vs Indian Wires | Stranded Wires | Flexible Wires | Cable”
Plz.. Explain Less copper content in class 5?
Class 5 resistance per meter is more than class 2 wires. so Energy loss is more in class 5 wires. Class 5 wires has thinner wires are connected in Parallel, but actually, conductors connected in parallel should have lesser resistances. Class 5 wire has more resistance since Class 2 wire is thicker with lesser standards. Class 5 wires need to be more flexible than class 2, to make it more flexible class 5 has lesser copper