“Quiero alimentar las lámparas a través de un hilo muy largo, unos 40 metros. ¿Cuál debe ser espesor del hilo para que no ocurran pérdidas y la reducción del brillo de las lámparas?”

   El espesor en su caso no depende sólo de la distancia en que se encuentran las lámparas, sino también de su potencia. La longitud total del hilo determina su resistencia y, por lo tanto, la caída de tensión que ocurre en función de la intensidad de la corriente. Como la intensidad de la corriente depende de la potencia de las lámparas, si tienen baja potencia no será necesario aumentar mucho el grosor del hilo 18, por ejemplo. Por ejemplo, si se alimentan lámparas económicas hasta unos 50 W, no es necesario tener un grosor mayor que el utilizado en los hilos de una instalación normal. Sin embargo, si va a alimentar muchas bombillas incandescentes, por encima de unos 200 W, entonces el hilo debe ser más grueso: 16 o incluso 14.

 

18.953MBMemory Usage41.61msRequest Duration
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