Cable Size

By referring to Standards or to the Cable manufacturers' cable current rating tables.

Please refer to your cable ampacity

Dear guest it depends on what is your level of decision making. If you are an engineer designing a large power distribution system it is highly technical matter and various technical parameters have to be considered before finalising your cable size . The subject was discussed in detail in various earlier threads in this forum.If you are an armature then refer cable manufacturer's technical recommendation for selection of cable.

Sir,

Can u give me any chart which gives the selection of cables for different current loadings.

→ British Standard 7671 again. <sigh>

All cable manufacturers provide this chart . You can get it from any local cable dealer . All electrical specification books and electrical engineers handbook and even some engineer's diary provide it . If you are a resident of India please get the copy of IS 3961 ( part II)1967 . This provide the current rating chat for AC 650/1100 volts aluminium cable

Thanks....

The continuous current rating of cables considerably depend on size and kind of their conductors, and the insulating materials. The conductors affect to efficiency of electron flowing, for AC, on conductor surface, and insulation structure effects to the operating temperature, temperature between conductor and insulation. The higher operating temperature is, the more amount of current you get.

use ETAP