Can shielded cables be used as power cables?
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As the title suggests, for example, can a cable like ZR-KVVPR be used for an AC 220V power supply? If it can be used, should this shield be grounded at both ends, or left unattended? ?
It’s feasible if the requirements aren’t high, but when shielding wires, their cross-sectional area needs to be slightly larger than that required for the rated current; otherwise, the wires might overheat
It’s fine if the load isn’t high; make sure to handle the shielding layer properly to avoid short circuits. However, it’s better not to use it after all, as shielded cables are designed for signal transmission.
KVV is of the 450/750V class and can be used in 220V circuits. It can be installed with shielding (i.e., in tubes), which helps reduce interference with low-voltage controls. Both ends are grounded (tube-penetrating method). @jiaguoyun
It’s simply a waste; a single one doesn’t cost much
It’s best not to use them; cables with shielding are all signal cables, and their cross-sectional area is quite small compared to that of power cables, which can lead to burns if not handled properly. The cross-sectional area of the power cable must match that of the switch.
It’s possible, but it depends on the distance. If the distance is too great, the load will be too high and the power will not be sufficient; in that case, a thicker cable needs to be used
The routing of the instrument cables also needs to be considered. If they are run through the instrument tray, they must first be shielded and then covered with yellow hoses before they can be used; the shielding layers should be grounded separately to prevent the formation of circulating currents