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Power Cable Current?

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rhnrgn

rhnrgn

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hi,
Your cable will carry 200mA OK, but how long is the cable run and what is the working voltage of your cable and the voltage being carried by the cable.?
E
 

5V and 200ma. 1 or 2 meters long.

How can you calculate?
 

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    rhnrgn

    rhnrgn

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Hi,

One side is the power loss of the cable that causes heating.

Another point is to calculate voltage drop on the wire.

1.0 mm^2 is good for 10A.

With 10m cable and 10A you get a voltage drop of about 3.6V.
With a 230V system the load sees 226.4V and a linear load sees about 97% of power.
With a 12V system the load sees only 49% of power.

Klaus
 
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