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Anonymous Poster

amps calculation

10/19/2008 11:36 PM

How can calculate the ampere ratings of given cross sectional area of cables?
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Anonymous Poster
#1

Re: amps calculation

10/20/2008 12:16 AM

By calculating voltage drop in particular size of cable:(mv/A/m).

then, see the Ducab,Dubai(UAE)-CATALOGE only-you can find the cross sectional area.

pradhan(AMIE)

POBOX-9171,DUCAB.

Abudhabi.(UAE)
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PWSlack
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#2

Re: amps calculation

10/20/2008 3:05 AM

British Standard 7671. Again.

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Bill
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#3

Re: amps calculation

10/20/2008 9:09 AM

Your country will have adopted an electrical code which has tables of wire sizes and allowable currents. I suggest you use that.

However, since you haven't specified what the conductor material is, the limiting factor for any material is governed by its resistivity. Temperature rise due to the material's resistivity for electrical conductors is the main concern for codes and building officials, as overcurrent often produces fires. Obviously, insurance companies are concerned about such things, and they collaborate with organizations such as UL (Underwriters Laboratories [USA]), IEEE (Institute of Electrical and Electronics Engineers [USA]), etc., to determine safe limits.

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Bill
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#4

Re: amps calculation

10/21/2008 11:42 AM

From an empirical perspective, see Neher-McGrath

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Paganini
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#5

Re: amps calculation

10/22/2008 12:10 AM
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Previous in Forum: Short Circuit Capacity with a Trailing Cable   Next in Forum: Can Ballast be Reason for Short-Lived Lamps?

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