Answer Posted / brewed

There are many factors to consider when choosing cable
size .nd I will list just but a few.
1. You need to know the kind of load.
2. you need to know if its undergrond, overhead, in or out
doors
3. You need to know the temperature of your environment.
4. You need to consider the atmospheric pressure
With these and other facors you multiply them, depending on
your installation rules, to get a k factor which will then
depend on rated current carrying capacity of the cable at
hand.

why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

2111

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What is meant by coupling capacitor?

1077

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Is a d.c.compound motor is use as a booster? how?

2136

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If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?

1421

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What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

2006

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please send me previous year questions of jspl through which i could prepare myself for the test.

1880

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What is core CT & it's function?

2181

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what is the difference between 2 way and 4 pole selector switch???

2453

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can anybody send the rrb chennai &rrb bopal question papers of 2006&2007.My exam is on 12 oct 2008.Its urgent

2051

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What is the formula for calculating no-load current?

1103

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Can any one know what are the symbols at the down (below) the analog ammeter??? there are 4 symbols which are they ?????

1910

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what do u understand from filter factor of reactor?

1968

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I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting

1477

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how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

2115

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what is the ATS .And how it works.

1631

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