Cable Sizing

What is the conductor material, insulation material & no. of cores of the cable intended to be used?

Hi,

The conductor material will be copper, PVC insulated,two core. Actually the cable should carry DC current.

http://cr4.globalspec.com/search/sitesearch?do=show&sort=textmatchrank&srch=cable%20sizing&order=asc

Cable sizing depends upon

a) type of conductor either Copper or Aluminium.

b) type of insulation either PVC or XLPE.

c) continuous current carrying capacity after considering the derating factors.

d) Permissible Voltage drop in V/Km.

e) Fault current it has to carry before the SCPD operates expressed in KA/Sec.

it would be helpful if you told use the voltage and 1phase or 3phase. Who came up with the 1 volt drop? Do they know what they are doing? You will need some absurdly large conductor to do this

as per NEC , %VD must be 2% of supply voltage for Feeder side and 3% for load side.. the lower the voltage drop the lager the area of your cable.. 1volt for voltage drop is imposible..b it is because VD is dependent on the ac resistance and inductance of the cable. VD becomes Lower when you increase the size of your cable..

You are talking about AC supply...OP asking about DC voltage.

Voltage? We need to know 1% of what value

I need the following details i will help you

1. Voltage of the equipment?

2. Type of insulation required?

3. HT equipment in the sense we need the short circuit current kA/s?

1. voltage - 110V DC

2.PVC

3. No HT equipment

Please help

hello....where is the help...i posted you what you asked

Easy A#2. You are the one who did not post enough information. We don't sit around waiting to answer your question.

Here is a voltage drop calculator to answer your question just fill in the information an it will give your the answer. Took me a long time to find this so say thanks.

http://www.nooutage.com/vdrop.htm

Hi,

Thank you very much for the pain taken.

Hello,

I took your inputs and calculated, the cable size 1#2Cx25Sq.mm is adequate. You need to consider the derating factor as per your requirement.

I have taken the dearating factor 0.612, cable resistance from cable Catalogue (i.e) 0.722 and got 0.0205 running voltage drop is less than your requirement and the cable withstanding capacity is more than your rated current.

Thank you

Is it copper or aluminium cable? armoured or not?..pvc or xlpe insulation?....De rating factor is not as per my requirement. it shall be as per standards and regulation. Which one is that you followed for the calculation? What is cable withstanding capacity?

I have taken PVC Insulation Aluminium, Armoured cable, In which standard and regulations they explained? (If we dont know the exact temperature values we can go for standards) de rating factor as per your ambient temperature factor and grouping factor, As the general practice experienced persons will take with 0.6 - 0.65 (If the temperatures are not knowing exactly).

Before asking this much questions please go through all your doubts in Internet.