what is the relation between Sq mm of wire and its current
carrying capacity?
Answers were Sorted based on User's Feedback
Answer / jk
Standard quation R=1/a and I=1/R
a=cross sectional area in Sq.mm
R=Resistance in ohms
I=Current in Ampere
now if we shorting above two euation in one form the the
formula become I=a means current is directly proportional
to the cross-sectional area of cable.inshort if cross-
sectional area increase then the current carrying capacity
is also increase of the cable.
| Is This Answer Correct ? | 29 Yes | 7 No |
sq mm means areaof crossection of the conductor
R prportional L/A
I=1/R
I=A/L
I= CURRENT
L= LENGTH OF THE CONDUCTOR
A= AREA OF CROSSECTION OF THE CONDUCTOR
SO AREA INCREASES ,CURRENT CARRYING CAPACITY ALSO INCREASES
| Is This Answer Correct ? | 17 Yes | 5 No |
Answer / chiplonkar
Current carrying capacity of a wire depends on the thermal
properties of the insulation applied over the conductor.
i.e. its temperature withstanding capacity decides the
current carrying capacity. For sending higher currents in a
wire,one must have lower resitance in order to limit the
Heat generated in the conductor.
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / s.vijayakumar
it is correct but this answer for dc current or AC current
| Is This Answer Correct ? | 4 Yes | 6 No |
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