When choosing wire and cable, generally pay attention to the wire and cable type, specification (conductor cross section).
According to the security requirement, can choose flame retardant cables, halogen-free flame retardant cable, fire-resistant cable, etc.
Determine the use of wire and cable specifications (conductor cross section), the general should consider fever, voltage loss, economic current density, mechanical strength, etc. The selection criteria.
According to experience, low voltage power line because of the load current is bigger, so the general choice under heating conditions section first, and then calculating the voltage loss and mechanical strength.
Low-pressure flare path because of its higher requirements on voltage level, can according to the first selection section allows the voltage loss condition, and then calculating the heating condition and mechanical strength.
For high voltage line, according to economic current density first selection section, and then calculating the heating conditions and allow the voltage loss.
And high voltage overhead line, should also check its mechanical strength. If the user does not have experience, should consult the opinions of the relevant professional units or persons.
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